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Journal articles on the topic 'Seedling vigor'
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1
Ratnayake, Sunil, and David R. Shaw. "Influence of Seed Vigor, Herbicide Rates, and Incorporation Depths on Emergence and Seedling Development of Soybean (Glycine max)." Weed Technology 6, no. 4 (1992): 801–6. http://dx.doi.org/10.1017/s0890037x00036290.
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Imazaquin at 140, 280, and 420 g ai ha-1did not negatively affect seedling emergence from high vigor (98% germination) soybean seed but, coupled with a 5.0-cm herbicide incorporation depth, reduced seedling emergence from low vigor (67% germination) seed at all rates. Imazaquin at 420 g ha-1incorporated 5.0 cm deep reduced low and high vigor seedling height 36 and 28%, respectively. Imazaquin at all rates reduced root length from high vigor seed, whereas only the high rate reduced root length of seedlings from low vigor seed. Although 420 g ha-1metribuzin did not affect seedling emergence or root length, emerged seedlings were severely damaged when herbicide was incorporated to 5.0 cm. Trifluralin at 840 and 1680 g ai ha-1reduced emergence of low vigor seed when incorporated 5.0 cm deep. Trifluralin at 840 g ha-1did not affect seedling height or root length, but 1680 g ha-1reduced height of seedling from low and high vigor seed by 86 and 66% when incorporated 5.0 cm deep. Trifluralin at 1680 g ha-1reduced shoot dry weight of both types of seedlings only at the 5.0-cm incorporation depth.
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DIAS, MARCOS ALTOMANI NEVES, VITOR HENRIQUE VAZ MONDO, SILVIO MOURE CICERO, NAYARA ROBERTO GONÇALVES, and CIBELE APARECIDA TEIXEIRA DA SILVA. "VIGOR TESTS ASSOCIATION AS AN ALTERNATIVE FOR PRECISE AND EFFICIENT ASSESSMENT OF MAIZE SEED QUALITY." Revista Caatinga 28, no. 3 (2015): 93–99. http://dx.doi.org/10.1590/1983-21252015v28n311rc.
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ABSTRACT: This study aimed to associate two concepts of seed vigor testing, the aging and seedling growth using image analysis, providing a feasible and time-saving way to evaluate maize seed vigor in large scale. For this purpose, five seed lots with different vigor levels from two single hybrids were used. The seeds were characterized by moisture content, germination, seedling emergence, seedling emergence speed index, accelerated aging and cold tests. The treatments were composed by varying the accelerated aging periods (0, 24, 48, 72 and 96h) and seedling growth periods (48 and 72h), before submitting the seedlings to image analysis for seedling root length measurement. Considering the results obtained, the adaptation of accelerated aging test by reducing the aging duration from 96h to 48h, and the replacement of the germination test by seedling root length measurement using image analysis could be considered a potential tool for maize seed vigor assessment. The treatments composed of 48h of seed aging followed by seedlings root length measurements using image analysis provided reliable data, compared to traditional vigor tests and it could be considered an efficient and time-saving approach, associating two different concepts of seed vigor analysis.
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Alvarenga, Renata Oliveira, and Julio Marcos-Filho. "Vigor evaluation of stored cotton seeds, including the Seed Vigor Imaging System (SVIS®)." Journal of Seed Science 36, no. 2 (2014): 222–30. http://dx.doi.org/10.1590/2317-1545v32n2944.
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This study aimed at evaluating efficiency of different tests to assess cotton seed vigor during storage, including the SVIS® software. Thereby, five cotton seed lots (cv. BRS 293) were stored under controlled environmental conditions of low temperature and relative humidity (10 ºC; 30% RH), and under non-controlled laboratory environmental conditions, for eight months. Evaluations of germination, first germination count, cool germination, accelerated aging test traditional and with saturated salt, field seedling emergence and seedling imaging automated analysis - SVIS® were performed before and after every two storage months. It was concluded that the cool germination, accelerated aging (traditional and with saturated salt), field seedling emergence and seedlings length (SVIS®) are adequate parameters for assessing vigor of cotton seeds during storage, and that both accelerated aging and SVIS® (vigor index and seedlings length) present enough sensitivity to identify changes on seed vigor during storage.
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Silva, Jackson Araújo da, André Dantas de Medeiros, Daniel Teixeira Pinheiro, et al. "Semi-automated Phenotyping of Soybean Seedlings and Its Relation With Physiological Seed Quality." Journal of Agricultural Science 11, no. 16 (2019): 1. http://dx.doi.org/10.5539/jas.v11n16p1.
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The development of procedures enabling agility and effectiveness to the analyses of seed vigor are great advances for the seed research field. The aim of this paper was to evaluate the efficiency of the Seedling Analysis System (SAPL®) to seedling phenotyping and determining the physiological potential of soybean seeds, in comparison with the information provided by traditional vigor tests recommended for this species. The characterizing of physiological potential of the seed lots was carried out based on germination tests, first germination count, seedling emergence, cold test, and electrical conductivity. The results of these tests were compared with the data obtained using image analysis with the software SAPL®, which was used to evaluate the development seven- day old seedlings. It was obtained the length of shoot, primary root and entire seedling, growth rates, uniformity, vigor index and corrected vigor index, based on different variations of the growth/uniformity ratio, namely 80:20, 70:30, 60:40, in the vigor index calculation. Analysis of images of the seven-day old seedlings using SAPL® enables phenotyping of soybean seedlings and is a consistent and promising alternative for identifying differences in vigor between soybean seed lots, equivalent to that found with traditional vigor tests.
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Mellish and B. Coulman, A. "Seed weight, emergence and seedling vigour of four tetraploid crested wheatgrass populations." Canadian Journal of Plant Science 83, no. 1 (2003): 69–70. http://dx.doi.org/10.4141/p01-119.
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This study compared the seed weight, and seedling emergence vigor of four tetraploid crested wheatgrass populations. S9240H, a population selected for seed size, had larger seeds than the cultivars Kirk and CD-II. Heavy seeds had greater emergence and heavier seedlings than light seeds, but there were no differences in these characters among the four populations. Key words: Crested wheatgrass, seed size, seedling vigour
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Hu, Bizhen, Mark A. Bennett, and Matthew D. Kleinhenz. "A New Method to Estimate Vegetable Seedling Vigor, Piloted with Tomato, for Use in Grafting and Other Contexts." HortTechnology 26, no. 6 (2016): 767–75. http://dx.doi.org/10.21273/horttech03485-16.
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The primary objective of this study was to test an improved method for estimating vegetable seedling vigor, which is important in grafting and other contexts. The study was also designed to test correlations between destructive and nondestructive measures of seedling growth and the effect of tomato (Solanum lycopersicum) rootstock and scion seedling vigor on graft success. Emergence and biomass accumulation and distribution of 18 tomato rootstock and five scion cultivars were monitored in the greenhouse through 18 days after sowing using seven destructive and nondestructive measures; growing conditions were also monitored. Plant and environmental data were used: 1) to develop cultivar growth curves, rank-sum values, and multicomponent seedling vigor values, and 2) to test correlations between percent canopy cover and other foliar measures. Also, seedlings representing all 90 rootstock–scion combinations and their associated seedling vigor values were cleft-grafted using accepted methods and grafted-plant survival was evaluated 2 weeks later. The experiment was conducted twice. Overall seedling vigor and its components differed significantly between runs of the experiment and among cultivars, although most cultivars had similar rankings (relative vigor) in both runs. Rank-sum and seedling vigor values ordered cultivars similarly. However, the range of cultivar seedling vigor values (3–11,504) greatly exceeded the range of rank-sum values (4–92). Correlations between destructive and nondestructive measures were significant. Graft success did not differ among cultivar combinations. We conclude that 1) the method to estimate seedling vigor described herein is useful in grafting and other contexts, including when discerning cultivar and other treatment effects, 2) nondestructive measures can substitute for some destructive ones, and 3) graft success in tomato is unrelated to rootstock and scion seedling vigor, provided proper grafting and healing techniques and commercial cultivars are used.
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Ganigara, Basavaraj S., Doddabasawa, Hanumanthappa Dasanahalli, Shakuntala N.M, Umesh Hiremath, and Maruti.K. "Influence of Potting Mixture and Sowing Orientation on Physiological Parameters of Balanites roxburghii (Linn.)." Journal of Scientific Research and Reports 30, no. 11 (2024): 483–93. http://dx.doi.org/10.9734/jsrr/2024/v30i112576.
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Balanites roxburghii (Linn.) species has been classified under the category of endangered plant species due to excessive exploitation for a variety of purposes, which has necessitated conservation of this tree species, and hence a study was conducted to investigate the effect of potting mixture and sowing orientation on early growth performance and vigour. Seeds were subjected to seven potting mixtures: M1: Soil:Sand:FYM 2:1:1, M2: Soil:Cocopeat:FYM 2:1:1,M3: Soil:Cocopeat:Vermicompost 2:1:1, M4: Soil:Paddy Husk:FYM: 2:1:1, M5: Soil:Paddy Husk:Vermicompost: 2:1:1, M6: Soil: Saw Dust:FYM 2:1:1, and M7: Soil:sawdust: Vermicompost 2:1:1. The seeds were sown in three orientations. S1: Seeds laid vertically with stalk end downwards; S2: Seeds laid horizontally and S3: Seeds laid vertically with stalk end upwards. Physiological parameters considered for assessment were seed germination, days taken for germination, seedling length, and seedling vigor index. A completely randomized design was used for the experiment. The results showed that there is a significant difference among seven different potting mixtures and three orientations. At the end of 8 weeks, the seed is sown horizontally in the potting mixture Soil:cocopeat:vermicompost (2:1:1) has recorded the germination percentage of 71.67%, 37 days taken for seed germination, highest seedling length (64 cm), and highest seedling vigour index (4561). The high-vigor seedlings may survive even in unfavorable conditions, with high survival rate compared to others. The study recommended that to obtain high-vigor Balanites roxburghii seedlings, seeds may be sown in potting mixture soil: cocopeat: vermicompost (2:1:1) with horizontal orientation.
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Chiquito, Adrielle Aparecida, Francisco Guilhien Gomes Junior, and Julio Marcos-Filho. "Assessment of physiological potential of cucumber seeds using the software Seedling Vigor Imaging System® (SVIS®)." Revista Brasileira de Sementes 34, no. 2 (2012): 255–63. http://dx.doi.org/10.1590/s0101-31222012000200010.
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The software Seed Vigor Imaging System (SVIS®), has been successfully used to evaluate seed physiological potential by automated analyses of scanned seedlings. In this research, the efficiency of this system was compared to other tests accepted for assessing cucumber (Cucumis sativus L.) seed vigor of distinct seed lots of Supremo and Safira cultivars. Seeds were subjected to germination, traditional and saturated salt accelerated aging, seedling emergence, seedling length and SVIS analyses (determination of vigor indices and seedling growth uniformity, lengths of primary root, hypocotyl and whole seedlings). It was also determined whether the definition of seedling growth/uniformity ratios affects the sensitivity of the SVIS®. Results showed that analyses SVIS have provided consistent identification of seed lots performance, and have produced information comparable to those from recommended seed vigor tests, thus demonstrating a suitable sensitivity for a rapid and objective evaluation of physiological potential of cucumber seeds. Analyses of four-days-old cucumber seedlings using the SVIS® are more accurate and growth/uniformity does not affect the precision of results.
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Nguyen, Chi D., Jianjun Chen, David Clark, Hector Perez, and Heqiang (Alfred) Huo. "Effects of Maternal Environment on Seed Germination and Seedling Vigor of Petunia × hybrida under Different Abiotic Stresses." Plants 10, no. 3 (2021): 581. http://dx.doi.org/10.3390/plants10030581.
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Seed germination and seedling vigor can be affected by environmental cues experienced by the mother plant. However, information about how the maternal environment affects seed quality is scarce in ornamental plants. This study aimed to investigate the effects of two different maternal environments on the seed germination and seedling vigor of Petunia × hybrida under a variety of abiotic stresses. Petunia mother plants were grown in either a greenhouse during the summer months or an indoor controlled-temperature-and-light environment. Collected seeds were subjected to external stressors, including polyethylene glycol (PEG), sodium chloride (NaCl), high temperature, and abscisic acid (ABA), to determine seed germination percentage and seedling vigor. Results indicated that seeds harvested from the mother plants grown in a controlled environment germinated better than seeds harvested from the mother plants grown in the greenhouse when suboptimal germination conditions were applied. Additionally, the seedlings from the controlled maternal environment performed better in both ABA and salinity stress tests than the greenhouse seedlings. Interestingly, the greenhouse seedlings displayed less reactive oxygen species (ROS) damage and lower electrolyte leakage than the controlled environment seedlings under dehydration stress. The difference in germination and seedling vigor of seeds from the two different maternal environments might be due to the epigenetic memory inherited from the mother plants. This study highlighted the strong impact of the maternal environment on seed germination and seedling vigor in Petunia and may assist in high-quality seed production in ornamental plants.
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B. Supriya, Y. Bharathi, M. Rajender Reddy, and S. N. C. V. L. Pushpavalli. "Studies on variability parameters and correlations in Soybean (Glycine max) germplasm for seed quality characters." EMERGENT LIFE SCIENCES RESEARCH 09, no. 02 (2023): 159–67. http://dx.doi.org/10.31783/elsr.2023.92159167.
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Eighty-four soybean germplasm lines were tested for seed quality traits. The analysis of variance was performed and all the germplasm lines significantly differed for the characters viz., Percentage of germination, Seedling vigour index-I, Field emergence percent, Seedling vigour index-II, Electrical conductivity, and Moisture percentage. The correlation and variability studies were done for quality parameters in seed for eighty-four germplasm lines and results obtained were noted with high heritability and genetic advance along with large variability for Seedling vigor index-I, Seedling vigor index-II and electrical conductivity of seed leachates. The percentage of germination exhibited positive correlation with Seedling vigor index I and II along with field emergence and negative correlation with electrical conductivity. Genotypes GP-186, ASB-135, GP-142, GP-104, GP-145, ASB-114, ASB-15, ASB-104, GP-174, ASB-101, ASB-139, Aisb-50, Basara, Js-335 and Js-93-05 recorded superior seed quality parameters.
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PADILHA, MATHEUS SANTIN, CILEIDE MARIA MEDEIROS COELHO, and GISIANE CAMARGO DE ANDRADE. "SEED RESERVE MOBILIZATION EVALUATION FOR SELECTION OF HIGH-VIGOR COMMON BEAN CULTIVARS." Revista Caatinga 33, no. 4 (2020): 927–35. http://dx.doi.org/10.1590/1983-21252020v33n407rc.
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ABSTRACT The efficiency of seed reserve mobilization (SRM) can be affected by genotype characteristics and seed initial physiological quality, which are determinant for the choice of cultivars that present plants with high physiological performances. The objective of this study was to evaluate the SRM in different common bean cultivars with different vigor and determine the differences in this process between seed lots and cultivars. Six common bean cultivars were grown in the 2017-2018 and 2018-2019 crop seasons in Lages, Santa Catarina, Brazil. The physiological quality of the cultivars was defined by germination test, accelerated aging test, seedling length, and vigor index, establishing two vigor groups (high vigor and low vigor). SRM was evaluated based on seed and seedling dry weights, use of seed reserves, use rate of seed reserves, SRM rate to the seedling, and use efficiency of seed reserves. The high-vigor cultivars presented higher use rates of seed reserves, SRM rate to the seedling, and use efficiency of seed reserves, favoring the development of vigorous seedlings. The evaluation of SRM is an alternative to improve control of internal seed quality and selection of high-vigor common bean cultivars.
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Araújo, Joyce de Oliveira, Denise Cunha Fernandes dos Santos Dias, André Dantas de Medeiros, Laércio Junio da Silva, and Warley Marcos Nascimento. "Chickpea seed vigor evaluated by computerized seedling analysis." Semina: Ciências Agrárias 42, no. 1 (2021): 71–86. http://dx.doi.org/10.5433/1679-0359.2021v42n1p71.
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Computerized seedling analysis is a promising tool for assessing seed vigor, providing reliable and less subjective results. The aim of this study was to define a method for evaluating the vigor of chickpea seeds through computerized image analysis, using the Seedling Analysis System (Sistema de Análise de Plântula - SAPL®) as a basis. Two chickpea cultivars were evaluated, consisting of five seed lots of cv. BRS Aleppo and four seed lots of cv. Cícero. Test were performed on the seeds of each cultivar for initial characterization of the physiological potential of the lots, and the results were compared with the determinations made via SAPL®. The results showed high correlations between the variables obtained from computerized analysis and from traditional vigor tests, especially for the close relationship between the cold test and low temperature germination test with the corrected vigor index (r > 0.9) evaluated on the fourth day after the beginning of the test. The total length of seedlings, length of the primary root, and growth and corrected vigor indices obtained through computerized analysis of seedlings on the 4th day after sowing allowed separation of the lots regarding vigor. Computerized analysis of seedlings using SAPL® is effective in determining the vigor of chickpea seed lots.
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Altizani-Júnior, Júlio César, Silvio Moure Cicero, Cristina Batista de Lima, Rafael Mateus Alves, and Francisco Guilhien Gomes-Junior. "Optimizing Basil Seed Vigor Evaluations: An Automatic Approach Using Computer Vision-Based Technique." Horticulturae 10, no. 11 (2024): 1220. http://dx.doi.org/10.3390/horticulturae10111220.
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The short cultivation cycle and high essential oil content of basil plants render them a valuable raw material source for diverse industries. However, large-scale production is hindered by the lack of specific protocols to assess seed vigor; thus, a consistent supply of high-quality seeds that meet consumer demands cannot be ensured. This study investigated the effectiveness of an automated system for seedling analysis as a tool for evaluating basil seed vigor and compared it to traditional tests. For this purpose, seeds from eight commercial lots were evaluated in two separate trials spaced six months apart using the following tests: germination, first germination count, saturated salt accelerated aging, primary root emergence, mean germination time, seedling emergence, seedling emergence speed index, and computerized seedling image analysis. The parameters provided by the system allowed us to clearly and objectively classify the basil seed lots based on vigor, and the results were strongly and significantly correlated with the findings of traditional vigor tests, particularly between the vigor index and seedling length. Digital analysis of four-day-old seedlings proved to be a fast and efficient technique for evaluating basil seed vigor and has the potential for use in automating the data collection and analysis process.
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Wen, Daxing, Haicheng Xu, Liuyong Xie, et al. "Effects of Nitrogen Level during Seed Production on Wheat Seed Vigor and Seedling Establishment at the Transcriptome Level." International Journal of Molecular Sciences 19, no. 11 (2018): 3417. http://dx.doi.org/10.3390/ijms19113417.
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Nitrogen fertilizer is a critical determinant of grain yield and seed quality in wheat. However, the mechanism of nitrogen level during seed production affecting wheat seed vigor and seedling establishment at the transcriptome level remains unknown. Here, we report that wheat seeds produced under different nitrogen levels (N0, N168, N240, and N300) showed significant differences in seed vigor and seedling establishment. In grain yield and seed vigor, N0 and N240 treatments showed the minimum and maximum, respectively. Subsequently, we used RNA-seq to analyze the transcriptomes of seeds and seedlings under N0 and N240 at the early stage of seedling establishment. Gene Ontology (GO) term enrichment analysis revealed that dioxygenase-activity-related genes were dramatically upregulated in faster growing seedlings. Among these genes, the top three involved linoleate 9S-lipoxygenase (Traes_2DL_D4BCDAA76, Traes_2DL_CE85DC5C0, and Traes_2DL_B5B62EE11). Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that pathways involved in nutrient mobilization and the antioxidant system showed enhanced expression under N240. Moreover, seeds with faster growing seedlings had a higher gene expression level of α-amylase, which was consistent with α-amylase activity. Taken together, we propose a model for seedling establishment and seed vigor in response to nitrogen level during seed production.
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Connolly, Brian M. "Collection Age and Seed Mass Influence Germination and Seedling Growth in Midwestern White Spruce Accessions." Forest Science 67, no. 6 (2021): 637–41. http://dx.doi.org/10.1093/forsci/fxab038.
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Abstract Stored tree seed collections are essential resources for seedling production and conserving unique germplasm. As stored seeds age, however, seed viability and seedling vigor can decline. This study tests how age and seed mass correspond to germination dynamics and seedling vigor in four white spruce collections from the upper midwestern United States. Using two seedling growth experiments, this study demonstrates that white spruce seeds stored for >30 years have low seed viability and slower seedling growth rates compared with seeds from more recent (≤10 years) white spruce collections. Seed mass also predicted seedling growth rate regardless of collection age, suggesting larger seeds from older collections generate faster growing seedlings.
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Mgonja, M. A., and T. M. Masajo. "Heritability of Seedling Vigor Characters." International Rice Research Newsletter 16, no. 2 (1991): 5–6. https://doi.org/10.5281/zenodo.7218207.
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This article 'Heritability of Seedling Vigor Characters' appeared in the International Rice Research Newsletter series, created by the International Rice Research Institute (IRRI). The primary objective of this publication was to expedite communication among scientists concerned with the development of improved technology for rice and for rice based cropping systems. This publication will report what scientists are doing to increase the production of rice in as much as this crop feeds the most densely populated and land scarce nations in the world.
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Afa, La Ode, Nini Mila Rahni Rahni, Andi Awaluddin Awaluddin, et al. "Biostimulant potential from seaweed (Kappaphycus alvarezii) on rice seedling development." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 53, no. 1 (2025): 110–21. https://doi.org/10.24831/jai.v53i1.62798.
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Seaweed (Kappaphycus alvarezii) liquid extract contains hormones, and macro and micronutrients that might benefit plant growth and development. This study aimed to evaluate the effect of a biostimulant liquid of seaweed extract on the vigor of rice seedlings. The research was conducted in the experimental field of the Faculty of Agriculture, Halu Oleo University, Kendari, Southeast Sulawesi. A factorial treatment design was conducted with a randomized block design. The first factor was the seedling method (wet sowing (S1) and dry sowing (S2)), and the second factor was six biostimulant concentrations (no biostimulant (K0), 0.8% (K1), 1.6% (K2), 2.4% (K3), 3.2% (K4), and 4.0% (K5)). The observed variables included seedling height, leaf area, number of tillers, root dry weight, and seedling dry weight. Data were analyzed using ANOVA, and DMRT at α = 0.05. The results showed that the wet sowing method produced better seedling vigor than the dry sowing method after 14 days. The wet sowing method combined with a 0.8% seaweed extract resulted in the highest seedling vigor. The present study concluded the biostimulant potential of seaweed extract for rice. Keywords: Dry sowing; Oryza sativa; seedling vigor; sowing method; wet sowing
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R.J.G. Rosales and G.F.S. Pascua. "Improving the seedling vigor and seedling performance of glutinous corn by hydropriming." Ecology, Environment and Conservation 31, no. 01 (2025): 296–99. https://doi.org/10.53550/eec.2025.v31i01.050.
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A study on hydropriming with different durations (4, 8, and 12 h) tested the seedling vigor of glutinous corn. Ambient conditions (temperature: 30 ± 2 ˆC; relative humidity - 65 ± 5%) were used as the growing conditions for the hydro primed and unprimed seeds (control). The treatments were arranged in a Completely Randomized Design in four replicates. Results show that longer hydropriming of 12 h exhibited a higher germination index (GI), germination speed, seedling vigor, and lower mean germination time (MGT). The longer the hydropriming, the faster the germination of corn seeds than unprimed and shorter durations of less than 12 h. There was an increasing trend of GI as the hydropriming duration increased. However, the seedling length of 12 h hydroprimed seeds was similar to 4 and 8 h, but they exhibited longer seedlings than unprimed seeds. Likewise, 8 and 12 h hydro primed seeds displayed a comparable seedling vigor index, but they were significantly higher than 4 h and unprimed seeds. Thus, it can be recommended that to improve the seedling vigor of corn seeds, 12 h of hydropriming is needed due to its significant enhancement on the parameters than the unprimed and shorter hydropriming durations.
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Adams, A. S., and L. K. Rieske. "Herbivory and Fire Influence White Oak (Quercus alba L.) Seedling Vigor." Forest Science 47, no. 3 (2001): 331–37. http://dx.doi.org/10.1093/forestscience/47.3.331.
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Abstract We manipulated arthropod and mammalian herbivory levels on white oak seedlings using a combination of insecticide applications and fencing and employed a split-split-plot design to assess the impact of single- and multiple-year burns on seedling growth over a 2 yr period. Herbivory levels increased over time on all sites, but there was no significant difference in herbivore pressure on seedlings in single-year burned, multiple-year burned, and nonburned plots. Insecticide-treated seedlings suffered less herbivore pressure than did noninsecticide treated seedlings, and mammalian herbivory was significantly reduced by the presence of a fence. Seedling height growth, shoot elongation, diameter growth, and specific leaf mass were greatest on once-burned sites, intermediate on twice-burned sites, and least on nonburned sites. Bud expansion was the only seedling performance parameter unaffected by burn treatment. Arthropod feeding was the greater component of overall herbivory, but this herbivory did not impede seedling growth. Seedling height growth and shoot elongation were more closely linked to mammalian herbivory. These results suggest that the observed herbivory may play a negligible role, and prescribed fire may be a beneficial component of a management program designed to enhance oak regeneration. FOR. SCI. 47(3):331–337.
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Robbins, JoAnn, and Thomas M. Sjulin. "Selection for Virus Tolerance in Strawberry Seedlings in Relation to Virus Source and Plant Age." Journal of the American Society for Horticultural Science 113, no. 6 (1988): 924–27. http://dx.doi.org/10.21273/jashs.113.6.924.
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Abstract Strawberry (Fragaria × ananassa Duch.) seedlings were planted in a greenhouse at 3- to 4-week intervals and simultaneously inoculated at ages 80, 101, 129, or 157 days with either of two naturally occurring virus sources each of which contained a mottle, mild yellow edge, and crinkle virus complex. Inoculation by aphids with either virus source reduced vigor, petiole length, leaflet width, stolons per plant, and vegetative dry weight of plants in the greenhouse. The tendency of virus inoculation to reduce vigor and petiole length was inversely proportional to increasing seedling age. In the field, inoculated seedlings were also less vigorous than control seedlings. Virus source effects and seedling age interactions with virus source were not significant. Selection for virus tolerance, based on greenhouse vigor, petiole length or leaflet width measurements, increased the frequency of seedlings subsequently classified as virus-tolerant in the field in both 80- and 101-day-old seedlings. Selection based on greenhouse vigor or petiole length increased the frequency in 129-day-old seedlings. No greenhouse selection method evaluated was effective in 157-day-old seedlings.
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Couvillon, Gary A. "Cercis canadensis L. Seed Size Influences Germination Rate, Seedling Dry Matter, and Seedling Leaf Area." HortScience 37, no. 1 (2002): 206–7. http://dx.doi.org/10.21273/hortsci.37.1.206.
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Several studies with annual crops have shown that large seeds improve percent germination, seedling growth, and uniformity, yield, seedling vigor, and stress tolerance. Little information is available on the influence of seed size on the resulting seedlings of woody plant species. Cercis canadensis L. seeds were divided into large and small seed size fractions and the seeds scarified, stratified, and planted. A larger percentage of large seeds germinated than did small seeds. Seedlings from large seeds had a greater peak and germination value than small seeds, indicating greater vigor and a more rapid germination rate thus more uniform seedlings. Seedlings from large seeds, as indicated by fresh and dry weights, were larger and contained a greater leaf area than those produced by small seed.
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Snider, John, Guy Collins, Jared Whitaker, Kent Chapman, Patrick Horn, and Timothy Grey. "Seed Size and Oil Content Are Key Determinants of Seedling Vigor in Gossypium hirsutum." Journal of Cotton Science 18, no. 1 (2014): 1–9. http://dx.doi.org/10.56454/uxgm9431.
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Despite the plethora of information on seed characteristics and seedling vigor in cotton, the near-continuous release of new cultivars coupled with limited information on seedling vigor for field conditions necessitates re-evaluation of seed characteristics important for vigorous seedling growth and plant establishment. Consequently, seedling vigor (fresh weight at the 2 to 3 leaf stage) and stand establishment were evaluated for 11 cotton cultivars across five locations in Georgia during the 2012 growing season. Seed size, seed oil content, and seed protein content were also evaluated for each cultivar. Cultivar differences in seedling vigor existed under field conditions for the genotypes evaluated. Genotypic correlations and regression analysis revealed a negative relationship between oil (%) and protein contents for quiescent seeds (r2 = 0.945). Additionally, positive relationships were observed between seedling vigor and total seed oil content (r2 = 0.573), and seedling vigor and seed size (r2 = 0.642). Cultivar differences existed in germination responses to incubation time and temperature, but these responses were not necessarily predictive of seedling vigor. These data indicate that information on seed oil content and seed size could help identify cultivars or seed sources with potential for high seedling vigor for use in production scenarios where reduced seedling vigor may limit productivity.
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Sommer, Ânderson Scalvi, Cileide Maria Medeiros Coelho, Matheus Santin Padilha, Cristiane Carlesso, and Jaquelini Garcia. "Vigor of hybrid corn seeds is determinant for the establishment of seedlings in the field." Revista de Ciências Agroveterinárias 23, no. 1 (2024): 62–69. http://dx.doi.org/10.5965/223811712312024062.
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The objective of this work was to determine the importance of vigor during the initial establishment of the maize crop. The work was carried out using 8 lots of hybrid corn seed, in which four lots were characterized as high vigor and four lots characterized as low vigor. After obtaining the seeds, they were sown in the field to determine the association between vigor and seedling performance at 21 days after sowing. The experiment was carried out in a randomized block design with four replications. Seedling emergence was measured daily up to 21 days, and at the end of the period, the shoot length, root system length, total seedling length and their respective masses, root system volume and stem diameter were determined. Seed vigor was positively associated with all measured variables, except for root system length. All parameters evaluated were superior in the group of seeds characterized as having high vigor. It is concluded that the vigor of hybrid corn seeds is crucial for the higher speed and uniformity of emergence in the field, being essential to form seedlings with superior performance in field conditions.
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Souto, Antônio Gustavo de Luna, Jussara Cristina Firmino da Costa, Nathalia Luiza Ferreira Campos, Jéssica Laísca Fernanda de Azevedo, and Carlos Eduardo Magalhães dos Santos. "Effect of temperature on passion fruit emergence and seedling vigor." Journal of Seed Science 39, no. 1 (2017): 50–57. http://dx.doi.org/10.1590/2317-1545v39n1169920.
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Abstract: Seedlings for commercial growing of passion fruit are preferentially acquired through seeds. Success in germination and seedling emergence, in turn, is influenced by the genetic constitution of the progenies and the thermal conditions imposed on the growth environment. The aim of this study was to evaluate the emergence and vigor of seedlings of passion fruit cultivars exposed to different temperatures. The experiment was conducted in a germination chamber at the Unidade de Ensino, Pesquisa e Extensão / Pomar Campus of the Department of Plant Science of the Universidade Federal de Viçosa (UFV). The study was carried out in 5 × 3 factorial arrangement, with five temperature ranges (5-15, 10-20, 15-25, 20-30 and 25-35 °C) and three varieties of passion fruit (BRS Sol do Cerrado, BRS Gigante Amarelo and FB-200 Yellow Master) in a completely randomized design with six replications of 25 seeds per plot. The variables analyzed were the percentage, the speed index, and the average time of emergence, shoot length, total length, and seedling dry matter. The cultivars BRS Sol do Cerrado and BRS Gigante Amarelo exhibited seedling emergence of over 95% in the temperature ranges of 20-30 °C and 25-35 °C. Alternating temperatures from 20-30 °C stimulates seedling emergence, seedling growth, and greater accumulation of seedling dry matter.
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Kandasamy, Saveetha, Nimalka Weerasuriya, Daniella Gritsiouk, et al. "Size Variability in Seed Lot Impact Seed Nutritional Balance, Seedling Vigor, Microbial Composition and Plant Performance of Common Corn Hybrids." Agronomy 10, no. 2 (2020): 157. http://dx.doi.org/10.3390/agronomy10020157.
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Soils with highly uniform textural, physical, and chemical characteristics still give rise to crop stand variability. Seed quality is one of the factors adding to yield variability and has become a concern for corn growers. Hybrid seed producers claim that their seeds provide a uniformity in crop emergence and productivity, but they do not always provide detailed studies to support this claim. Based on growers’ concerns, we examined fields planted with three different hybrid varieties and found that 25% to 50% of the stand had relatively weak vigor, where seed variety A showed 15% of seedlings with lower vigor, and varieties B and C had 30% of seedlings with low vigor. These apparent differences in plant vigor prompted us to initiate a cursory investigation to identify how seed size influenced seedling vigor and if the seedling’s microbial profile played a role in the early growth stages of three commonly grown corn hybrids in Ontario. Seeds were separated based on size, prior to conducting a growth room study. Different sizes of seeds from the same seed lot showed significant differences in vigor capacity and related biometric components. Significant differences were also found in their nutritional composition and microbial profiles within the different seed sizes and the roots and shoots of seedlings derived from such seeds. The results clearly indicate that seed size greatly impacts the plant growth and its microbiome, resulting in seedlings with different plant vigor, microbiomes, and performance.
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Medeiros, André Dantas de, and Márcio Dias Pereira. "SAPL®: a free software for determining the physiological potential in soybean seeds1." Pesquisa Agropecuária Tropical 48, no. 3 (2018): 222–28. http://dx.doi.org/10.1590/1983-40632018v4852340.
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ABSTRACT Obtaining image-based information is a powerful approach to capture and quantify seed vigor data. However, commercial systems that facilitate the processing and acquisition of images are often cost prohibitive. This study aimed to evaluate the efficiency of the Seedling Analysis System (Sistema de Análise de Plântulas - SAPL®), in order to analyze the physiological potential of soybean seeds, in comparison with the information provided by vigor tests which are traditionally recommended for this species. Nine lots of soybean seeds were submitted to germination, germination speed, seedling emergence, cold test and electrical conductivity tests. In the SAPL® analyzes, seedlings of four and six days, counted from the beginning of the germination test, were evaluated, resulting in values for seedling length, growth, development uniformity, vigor index and corrected vigor index. The evaluated lots with emergence greater than 90 % showed a vigor index higher than 600 and 800, respectively in the fourth and sixth days. The indexes generated by SAPL®, except for the uniformity index, presented positive and high correlations with the traditional tests (> 0.80). SAPL® is efficient in identifying differences in the vigor of soybean seed lots.
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Souto, Antônio Gustavo de Luna, João Paulo Gava Cremasco, Mariana Quintas Maitan, Jéssica Laisca Fernanda de Azevedo, Mariana Rodrigues Ribeiro, and Carlos Eduardo Magalhães dos Santos. "Seed germination and vigor of passion fruit hybrids." Comunicata Scientiae 8, no. 1 (2017): 134. http://dx.doi.org/10.14295/cs.v8i1.1379.
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Most commercial plantations of passion fruit is propagate plants by seed, but germination is irregular, which hinders the growth of seedlings and uniformity, and is connected with the plant genotype. The objective of this study was to evaluate the germination and early growth of passion fruit hybrid seedlings, obtained from different genetic combinations. The hybrids were obtained from the cross between progenies from the breeding program of the Universidade Federal de Viçosa with hybrids of the Empresa Brasileira de Pesquisa Agropecuária and of the Viveiros Flora Brasil. The experimental design was completely randomized with six hybrids, five replicates and fifty seeds per experimental unit. Germination was assessed daily until the 28 days, and at the end of the period it was obtained the mean time germination, emergence speed index, seedling height, the length of shoots and roots, and the individual seedling dry matter (root + shoot)was assessed. Among the passion fruit hybrids evaluated, hybrid HB2 (UFVM0212 × BRS Sol do Cerrado) showed the highest germination and seedling biometric values and might be a genotype with potential for breeding programs for seed quality. The specific combining ability of parents can influence the quality of seeds and the vigor of passion fruit seedlings. A factor must be considered is the correct choice of maternal and paternal parents, since they influence the quality of seeds.
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Melo, Paulo Alexandre Fernandes Rodrigues de, Tatiane Sanches Jeromini, Carlos Eduardo Affonso, Edna Ursulino Alves, and Cibele Chalita Martins. "Vigor tests in assessing the quality of signal grass seeds." Semina: Ciências Agrárias 38, no. 6 (2017): 3491. http://dx.doi.org/10.5433/1679-0359.2017v38n6p3491.
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The correct assessment of the physiological quality of seed lots is necessary for the quality control program of companies. For such purpose, tests that detect differences in the physiological potential of seed lots and that meet the minimum market requirements. Thus, the study was conducted towards assessing the efficiency of laboratory tests in differentiating the quality of Brachiaria brizantha cv. Xaraés seed lots. Seeds from nine lots were assessed regarding water content, germination, first germination count, electrical conductivity and seedling emergence in sand in the laboratory (normal seedlings, first count and germination rate index), and the results were compared with those from the seedling emergence test conducted in the field. The experimental design used was completely randomized, with four replicates, and the Pearson correlation coefficient between the values from the germination, vigor and field seedling emergence tests was determined. The germination and seedling emergence in sand tests and the seedling emergence rate index efficiently assess the physiological quality of Brachiaria brizantha cv. Xaraés seed lots, providing data similar to those from seedling emergence in the field.
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Bourland, Freddie M. "Functional Characterization of Seed and Seedling Vigor in Cotton." Journal of Cotton Science 23, no. 2 (2019): 168–76. http://dx.doi.org/10.56454/fxqj8103.
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Attaining seed and seedling vigor in cotton is a goal of both researchers and producers. By separating and defining components of seed and seedling vigor, progress can be achieved. Seed vigor should be distinguished from seed viability and defined in terms of low degree of seed deterioration. Varying levels of resistance to seed deterioration have been achieved using different approaches. Three components are proposed for defining seedling vigor: well-developed seedling roots, rapid true-leaf differentiation, and low incidence of seedling disease. Approaches for making improvement in each of these components are discussed. Attaining seed and seedling vigor, and subsequently vigorous stands of cotton, requires an integrated approach and improvement in each component.
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Maulana, Frank, Wangqi Huang, Joshua D. Anderson, Tadele T. Kumssa, and Xue-Feng Ma. "Genome-Wide Association Mapping of Seedling Vigor and Regrowth Vigor in Winter Wheat." Crops 1, no. 3 (2021): 153–65. http://dx.doi.org/10.3390/crops1030015.
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Seedling vigor and regrowth ability are important traits for the forage production of winter wheat. The objectives of this study were to map quantitative trait loci (QTL) associated with seedling vigor and regrowth vigor traits using a genome-wide association mapping study (GWAS). Seedling vigor and regrowth vigor were evaluated with shoot length, the number of shoots per plant and shoot dry weight per plant 45 days after planting and 15 days after cutting. A large phenotypic variation was observed for all the traits studied. In total, 12 significant QTL for seedling vigor and 16 for regrowth vigor traits were detected on various chromosomes. Four QTL on chromosomes 2B, 4B, 5A and 7A for seedling vigor co-localized with QTL for regrowth vigor due to significant correlations between corresponding traits of the initial growth and regrowth. A BLAST search using DNA sequences of the significant loci revealed candidate genes playing roles in vegetative and reproductive development in different crop species. The QTL and single-nucleotide polymorphism (SNP) markers identified in this study will be further validated and used for marker-assisted selection of the traits during forage wheat breeding.
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Ekka, Nafisa, and Prashant K. Rai. "Standardization of pre-sowing organic seed encrustation treatments on seedling parameters of onion (Allium cepa) under ambient storage conditions." Vegetable Science 50, no. 01 (2023): 65–72. http://dx.doi.org/10.61180/vegsci.2023.v50.i1.09.
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The present study was conducted from March to June at Post Graduate Lab Department of Genetics and Plant Breeding, SHUATS experiment was conducted in factorial CRD with four replications. The onion variety Gavran was taken for evaluation. Thirteen treatment combinations comprise of five treatments (Neem leaf powder (3, 5, 7 g/kg of seeds); turmeric powder (5, 10, 15%), Bael leaf powder (4, 5, 6%) and pepper powder @ 20, 25 and 30 g/kg of seed) along with control and two storage container: zip lock bag and plastic container. Seedlings stored in plastic container exhibited highest germination percent (71.92%), germination rate (2.77), root length(5.82 cm), shoot length (6.74 cm), seedling length (12.57 cm), seedling fresh weight (178.41 mg) seedling dry weight (18.91 g) vigor Index-I (916.12), vigor index-II (1.37), seedling growth rate (0.143), electrical conductivity (0.853 dSm-1) and root shoot ratio (1.167). Moreover, the seed treated with neem leaf powder @ 5 g/kg of seeds show best result in term of seed quality parameter viz germination (82.75%), germination rate (3.19), root length (4.83 cm), shoot length (9.16 cm), seedling length (17.24 cm), seedling fresh weight (191.44 g), seedling dry weight (23.65 g), vigor index I (1426.86), vigor index II (1.96), seedling growth rate (0.203), electrical conductivity (0.80 dSm-1) and root shoot ratio (1.133) as compared to control at the end of 3 months of storage. The study concluded that combining plastic containers with neem leaf powder @ 5 g/kg of seeds can expand the storability of onion seeds under ambient conditions.
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Gonçalves, Nayara Roberto, Silvio Moure Cicero, and Haynna Fernandes Abud. "Seedling image analysis and traditional tests to evaluate onion seed vigor." Journal of Seed Science 39, no. 3 (2017): 216–23. http://dx.doi.org/10.1590/2317-1545v39n3160444.
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Abstract: The aim of this study was to verify the possibility of using computerized seedling image analysis to detect differences in vigor among onion seed lots and to compare this analysis with traditional vigor tests. We used five seed lots of two onion cultivars, Bella Catarina and Bella Vista. The Seed Vigor Imaging System (SVIS®) software was used to process the seedling images and assess seedling length and vigor through seedling uniformity and growth indexes. These determinations were compared to traditional tests used to evaluate onion seed vigor: germination percentage and first germination count, seedling emergence percentage and emergence speed, accelerated aging, and electrical conductivity. Results showed that vigor differences among onion seed lots can be identified using the SVIS® in a manner similar to traditional vigor tests; assessments should be performed at five days after sowing.
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Francisco Elder Carlos Bezerra Pereira, Tatiane Sanches Jeromini, Givanildo Zildo da Silva, Salvador Barros Torres, and Cibele Chalita Martins. "Evaluation of the physiological potential of Panicum maximum seeds by multivariate analysis." Bioscience Journal 38 (March 31, 2022): e38017. http://dx.doi.org/10.14393/bj-v38n0a2022-53754.
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The aim of this work was to identify efficient vigor tests for differentiating the seed lots, forecasting seedling emergence in the field and assessing the physiological quality of Panicum maximum seeds. 12 seed lots from the cultivar Tanzania and 11 seed lots from the cultivar Massai were evaluated for water content, germination, first count and germination speed index, emergence and first emergence count of seedlings in sand, root length and shoot length, analysis of SVIS® images (seedling length, vigor and uniformity index) and seedling emergence in the field. The work was conducted in a completely randomized design for tests performed in the laboratory and in randomized blocks for tests in the field. The data were subjected to analysis of variance and the means compared by Scott Knott's test at 5% probability and statistical multivariate clustering analysis and principal components analysis. The shoot and root length tests are efficient for the evaluation of the physiological potential of P. maximum cv. Massai, while the seedling length, vigor index and growth uniformity index tests using image analysis, seedling emergence in sand and first seedling emergence count in sand are efficient in assessing the physiological potential of seeds of P. maximum cv. Tanzania, and providing information similar to that of seedling emergence in the field.
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De Oliveira, Silvia Sanielle Costa, Larissa Katê Moreira Ribeiro, Sihélio Júlio Silva Cruz, et al. "Analysis of seedling images to evaluate the physiological potential of soybean seeds." OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 22, no. 3 (2024): e3633. http://dx.doi.org/10.55905/oelv22n3-050.
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The use of artificial intelligence techniques collaborate in laboratory analysis of seeds. In this sense, the objective of this work was to verify the efficiency of the Ground Eye® equipment in evaluating the vigor of soybean seeds and the agronomic performance of soybean varieties 74I77 RSF IPRO and NT 1478SP. For this, experiments were carried out to analyze the germination of soybean seeds. The variables analyzed by the analyst and Ground Eye® equipment were the following: number of normal, intermediate, weak and abnormal seedlings. The tetrazolium, vigor and seedling emergence test under field conditions for soybean cultivars were also performed. For seedling emergence in the field, tetrazolium test and vigor there was no statistical difference between soybean cultivars. The Ground Eye Series L equipment showed a lower number of normal seedlings, number of intermediate seedlings, number of weak seedlings and a higher number of vigorous seedlings when compared to the analyzes carried out manually. Based on the results, the cultivar NT 1478SP showed better performance and may be promising in the field. The Ground Eye L Series equipment is an efficient tool for checking the vigor of soybean seedlings, helping the analyst to perform the tests more quickly.
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Oakley, Kay, Robert Geneve, Sharon Kester, and Patchara Wonprasaid. "573 Seed Vigor Testing for Small-seeded Flower Species using Computer-aided Image Analysis." HortScience 34, no. 3 (1999): 545C—545. http://dx.doi.org/10.21273/hortsci.34.3.545c.
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Standardized seed vigor tests must be developed for greenhouse-grown flower species. Current vigor tests used to evaluate large-seeded agronomic crops are generally not useful for evaluating smaller-seeded flower species. One alternative is to use radicle length in seedlings grown under controlled environments as an indicator of seed vigor. For that purpose, a seed vigor test was developed that uses digital images taken using a flat bed scanner to measure radicle length in small-seeded flower species. A novel, cellulose substrate was used for germinating seeds. It provided similar moisture-holding properties to standard germination blotters used by commercial seed analysts, but is clear. This has allowed for quick image acquisition without removing seedlings from the petri dish. Correlations were made between seedling growth (radicle length, total seedling length, and total seedling area) with other vigor tests (saturated salts accelerated aging) and greenhouse plug flat emergence. For several seed lots of impatiens that varied in initial seed quality, radicle length after 4 days showed good correlations (>R2 = 0.79) with other measures of seed vigor for describing seed quality. This system is an improvement over other attempts to use computer-aided assessment of digital images because it provides digital images that do not vary due to external lighting; it uses software that can evaluate radicle length in a petri dish assay that does not require a slant-board for straight radicle growth; it relies on standard germination technics used by every seed lab; it uses a clear substrate to replace the opaque blotter to allow digital images to be taken within the petri dish; and accurate measurements of seedling parts is performed in under 2 min per petri dish.
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Padilha, Matheus Santin, Cileide Maria Medeiros Coelho, and Natalia Carolina Moraes Ehrhardt-Brocardo. "Vigor and alpha-amylase activity in common bean seeds under salt stress conditions." Semina: Ciências Agrárias 42, no. 6supl2 (2021): 3633–50. http://dx.doi.org/10.5433/1679-0359.2021v42n6supl2p3633.
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Seeds with high vigor have greater capacity for hydrolysis and mobilization of stored reserves, which results in the formation of vigorous seedlings, and this behavior is observed under abiotic stress conditions. This study proposes to investigate the relationship of the enzyme alpha-amylase in lots of common-bean seeds with contrasting vigor, when subjected to the absence and presence of salt stress, aiming to identify the relationship of this enzyme with the vigor of the seed lot under these conditions. Seven common-bean cultivars were used. Physiological quality was determined by germination, vigor index and seedling length. The mobilization of reserves was evaluated under absence and presence of salt stress simulated with a NaCl solution with a concentration of 50 mmol L-1. The analyzed variables regarding reserve mobilization were reserve reduction, reserve reduction rate, seedling dry weight, reserve mobilization rate, starch, starch reduction rate and alpha-amylase activity. Results showed that the stress condition negatively affected all the evaluated variables; however, the cultivars classified as having greater vigor showed better physiological performance under stress. Salt stress in common-bean seeds affects seedling performance and reduces alpha-amylase activity during germination, and high-vigor seed lots exhibited higher enzyme activity in the no-stress condition.
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Alvarenga, Renata Oliveira, Julio Marcos-Filho, and Tathiana Silva Timóteo. "Assessment of the physiological potential of super sweet corn seeds." Journal of Seed Science 35, no. 3 (2013): 340–46. http://dx.doi.org/10.1590/s2317-15372013000300010.
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The assessment of physiological potential is essential in seed quality control programs. This study compared the sensitivity of different procedures for evaluating super sweet corn seed vigor, focusing on the primary root protrusion test. Six seed lots, each of the SWB 551 and SWB 585 hybrids, were used. Seed physiological potential was evaluated by germination and vigor tests (speed of germination, traditional and saturated salt accelerated aging, cold test, seedling length, seedling emergence and primary root protrusion). Primary root protrusion was evaluated every 12 hours at 15 °C, 20 °C and 25 °C using two criteria (primary root protrusion and seedlings at the 2 mm root stage). It was concluded that the primary root protrusion test at 15 °C can evaluate super sweet corn seed vigor by counting the number of seedlings at the 2 mm root stage.
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Rashi and Nutan Kaushik. "Enhancing germination percentage and seed vigor in horticultural Crops through biopriming techniques." BIO Web of Conferences 110 (2024): 01012. http://dx.doi.org/10.1051/bioconf/202411001012.
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Seed biopriming induces a physiological condition that promotes germination and uniform seedling emergence. An investigation is carried out on different seeds such as carrot (Daucus carota subsp. Sativus), onion (Allium cepa L.), cauliflower (Brassica oleracea), radish, (Raphanus sativus), tomato (Solanum lycopersicum), spinach (Spinacia oleracea), fenugreek (Trigonella foenum-graecum), and pea (Pisum sativum) to standardise bio-priming with Bacillus siamensis strain NKIT-9 to improve seed germination and seedling vigor index. To optimise the concentration of bio-priming seedlings were bioprimed overnight with Bacillus siamensis strain (NKIT-9) at varied concentrations (0.1mg/ml, 10µg/ml, 0.1µg/ml, and 10ng/ml). Bio-priming with Bacillus siamensis strain NKIT-9 gave highest values of germination percentage and seedling vigor index of carrot (at 0.1mg/ml), onion (at 0.1µg/ml ), cauliflower at 0.1mg/ml, 10µg/ml, and 0.1µg/ml), radish (at0.1mg/ml and 0.1µg/ml), tomato (at 0.1mg/ml), spinach (at 10ng/ml ), fenugreek (at 10ng/ml) and pea (a10ng/ml ) as compared with control. carrot, onion, cauliflower, radish, tomato, spinach, fenugreek, and pea exhibited higher germination percentages (60%, 100%, 100%, 100%, 80%, 90%, 100%, and 60% respectively) and seedling vigor indexes (148 ,720, 910, 880, 525, 580, 990, and 1018 respectively) when compared with control. Therefore, bio-priming with these concentrations is best suited for improving germination rate and seedling vigor of seeds.
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Gama, Guilherme, Vitória Ananda Cubas Castro, Maria Raphaella Bastos Ouriques de Abreu, Verônica Marques Feliciano da Silva, Rita de Cássia Quitete Portela, and Eduardo Arcoverde de Mattos. "INFLUENCE OF SEED MASS IN BIOMASS ALLOCATION OF A PALM VULNERABLE OF EXTINCTION." Oecologia Australis 29, no. 02 (2025): 116–26. https://doi.org/10.4257/oeco.2025.2902.02.
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Seedling vigor, defined here as total seedling biomass, is directly related to seedling performance in the face of environmental harshness. Additionally, differential portioning between shoot and root biomass can be a determinant of seedling survival under conditions of resource scarcity. We aimed to determine the biomass allocation pattern of Euterpe edulis seedlings and test the hypothesis that heavier seeds produce more vigorous seedlings. We followed a germination protocol that produced 50 seedlings, 32 of which were used to calculate the total seedling biomass investment, relative growth rate (RGR), specific leaf area (SLA), and root/shoot ratio (R/S). A linear regression showed that the root/shoot ratio (R/S) increased with increasing seed mass (p = 0.03). This result may be a consequence of differing seed reserves accumulated by seeds of different masses. Seed mass was also directly related to seedling vigor (p = 0.03). Despite the lack of relationship between seed mass and RGR (p = 0.553), the positive relationship between seed mass and SLA (p = 0.03) suggests that heavier seeds have a slow-growth strategy, whereas lighter seeds have a fast-growth strategy. As heavier seeds produce more vigorous seedlings, they should be preferred when planning restoration plantations since their seedlings have greater chances of survival under harsh conditions and may present more satisfactory performance. Additionally, since the population studied is already located at the upper thermal limit of the species, we suggest that future studies focus on how seedlings of different sizes perform at different temperatures.
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Hassan, Fatima A., and Mai M. A. Hassan. "The Use of Seed Vigour Tests for Predicting Field Emergence." International Journal of Applied Science 1, no. 2 (2018): p93. http://dx.doi.org/10.30560/ijas.v1n2p93.
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The general aim of this study was to address the problem of seed vigour testing in Acacia senegal and Acacia mellifera) by studying different seed vigour tests and comparing them to identify the most suitable test for each species. The importance of this study lies in the fact that vigour testing measures the percentage of viable seeds in a sample as well as their ability to produce normal seedlings under less than optimum or adverse growing conditions, similar to those occurring in the field. To achieve this objective, a set of laboratory and field tests were conducted for the two Acacia species. Data collected included: The number of seeds per kilogram, germination percentage, seedling shoot length, seedling root length, seedling root wet and dry weight, seedling shoot wet and dry weight. The cutting test, electrical conductivity tetrazolium test and Hiltner test were employed to determine the seed vigour.
 The results showed that Acacia mellifera had a high electrical conductivity, indicating its low seed vigour. The electrical conductivity of Acacia senegal was equivalent to that of distilled water, indicating that either the seed coat was intact or no ions were leached from the seeds. Comparison of the various tests suggests that Hiltner test is the most accurate” or “reliable”) test for seed vigor.
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Dainello, F. J. "Radicle Dehydration of Germinated Seed on Seedling Emergence and Vigor in Spinach." HortScience 24, no. 6 (1989): 935–37. http://dx.doi.org/10.21273/hortsci.24.6.935.
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Abstract Germinated spinach (Spinacia oleracea L.) seed (radicle length 3 to 12 mm) were subjected to dehydration under uncontrolled room conditions for 3 to 25 days before planting. Although diminishing over time, some seedlings emerged after all dehydration periods. Seedling height and dry weight responded similarly. Dehydration of germinated seed for ≥15 days was required before seedling emergence was reduced by 50% of that produced by undehydrated germinated seed. Three cultivars responded similarly to length of dehydration period in respect to seedling emergence and vigor.
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Anitha, K., A. Senthil, M. K. Kalarani, et al. "Exogenous melatonin improves seed germination and seedling growth in greengram under drought stress." Journal of Applied and Natural Science 14, no. 4 (2022): 1190–97. http://dx.doi.org/10.31018/jans.v14i4.3818.
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Drought stress diminishes seedling germination and vigor by reducing water uptake, inhibiting plant growth and development. Most of the pulse growing areas are under rainfed ecosystems, which significantly reduces crop yield. Melatonin, a growth-regulating compound, is widely used to mitigate the negative effects of abiotic stresses in pulses. With this background, a laboratory experiment was conducted to standardize the optimum melatonin concentration for seed treatment and foliar application in greengram, to minimize the ill effects of drought stress. The experiment was arranged in a completely randomized design (CRD) with three replications for each treatment. The treatments consisted of soaking seeds with different melatonin concentrations, viz., 20, 40, 60, 80 and 100 μM. Seeds were sown in a perti dishes and the drought stress was imposed using poly ethylene glycol 6000 (PEG 6000) @ - 0.4 MPa, and plates were maintained at room temperature (24-30 °C). After the seedlings emerged, various seedling growth parameters like germination percentage, shoot length, root length, vigor index, promptness index, germination stress tolerance index, fresh and dry weight of the seedlings, plant height stress index and root length stress index were recorded. The experimental results showed that drought stress significantly reduced germination percentage and other growth-related parameters in greengram seedlings compared to the melatonin treatments. Among the melatonin treatments, seeds treated with @ 100 μM concentration recorded the highest germination percentage (99.67 %), promptness index (98.80), vigour index (1631.68), shoot and root length (8.9 cm and 7.5 cm), fresh and dry weight of the seedlings (3.249 and 0.147 mg seedling-1) under PEG induced drought stress condition.
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Kumar, Sanjay, S. N. Saxena, Mahesh Kumar Mahatma, and Ravi Y. "Impact of hydro priming on seed germination and field emergence in ajwain (Trachyspermum ammi)." International Journal of Seed Spices 14, no. 1 (2025): 57–64. https://doi.org/10.56093/ijss.v14i1.6.
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Seed priming, a pre-sowing treatment aimed at enhancing germination speed and early seedling vigor, was evaluated in Ajwain (Trachyspermum ammi). Hydropriming durations significantly influenced germination and seedling vigour parameters. Seeds primed for 65 hours exhibited the shortest germination initiation time (16 hours) compared to 66 hours in non-primed seeds and 94 hours in seeds primed for 10–15 hours, highlighting the importance of optimal hydration for metabolic activation. The shortest Mean Germination Time (66 hours) and the highest germination uniformity were observed with hydropriming durations of 50–55 hours, demonstrating enhanced synchronization and seedling vigor. Although field emergence rates remained statistically insignificant across treatments, the hydropriming for 40-50 hrs significantly enhance the speed of field emergence, seedling length (8.81 cm) and biomass (fresh and dry weights) (45 DAS), as compared to the control (8.31 cm), indicating physiological benefits under field conditions. However, non-significant impact on seed yield (g/plot) was observed, likely due to environmental variability. These findings revealed that hydropriming can be used as a potential tool for improving germination speed and early seedling vigour in Ajwain, with possible applications in other seed spice crops.
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Tao, Qibo, Jiayi Xing, Fansheng Meng, et al. "Siberian Wildrye (Elymus sibiricus) Seed Vigor Estimation for the Prediction of Emergence Performance under Diverse Environmental Conditions." Agronomy 14, no. 1 (2024): 173. http://dx.doi.org/10.3390/agronomy14010173.
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Seed vigor is an important aspect of seed quality. It is critical to predict seed vigor and plant seedling emergence under diverse environmental conditions using the laboratory vigor test. Accordingly, laboratory experiments were conducted to determine the standard germination (SG), early individual counts of radicle emergence (RE), mean germination time (MGT), and vigor index (VI) for 16 commercially available seed lots of Siberian wildrye (Elymus sibiricus), an economically and ecological important grass species. The field emergence (FE) for seed lots was explored using a three-year field trial from 2021 to 2023. Meanwhile, pot experiments were carried out to determine the seedling emergence performance under different environmental conditions, including control, drought, and salinity stress. The correlation and regression analysis were done to investigate the links between laboratory vigor test with emergence performance under both field and pot conditions. The results showed that the SG of 16 seed lots were high, similar, and did not differ significantly between seed lots. However, the seedling emergence performance (emergence percentage, seedling dry weight, and simplified vigor index) differed significantly between seed lots under both field and pot conditions. The SG was not significantly correlated with seedling emergence performance under either the field or pot conditions. The counts of RE at selected timing, MGT, and VI showed a significant relationship with seed vigor as reflected by seedling emergence performance under diverse environmental conditions, and we found that RE at 108 h was highly predictive of seed vigor and seedling emergence. The RE at 108 h and VI were positively related to seed vigor, while MGT was negatively related. The seed lots with low vigor had lower RE at 108 h and VI but longer MGT. Overall, both RE at 108 h, MGT, and VI can be used to estimate seed vigor and predict seedling emergence under different environmental conditions, and we highly recommend RE at 108 h as a quick, precise, and convenient vigor test and early warning sign for seed storage of E. sibiricus. These results will enable seed researchers, plant breeders, farmers, and government program directors to target higher seed vigor more effectively for E. sibiricus and similar grass species.
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Ali, Md Hossen, Jean-Marie Sobze, Thu Huong Pham, et al. "Carbon Nanotubes Improved the Germination and Vigor of Plant Species from Peatland Ecosystem Via Remodeling the Membrane Lipidome." Nanomaterials 10, no. 9 (2020): 1852. http://dx.doi.org/10.3390/nano10091852.
Full textAbstract:
Application of the nanopriming technique to alleviate seed dormancy has shown promising results in various agricultural crop species. However, there is a dearth of knowledge regarding its potential use in native peatland boreal forest species to alleviate seed dormancy and improve their propagation or vigor for forest reclamation activities. Herein, we demonstrate the use of nanopriming with carbon nanotubes (CNT) to alleviate seed dormancy, improved seed germination, and seedling vigor in two boreal peatland species. Bog birch (Betula pumila L.) and Labrador tea (Rhododendron groenlandicum L.) seeds with embryo or seed coat dormancy were nanoprimed with either 20 or 40 µg/mL CNT, cold stratified at 2–4 °C for 15 days, and allowed to germinate at room temperature. The emerged seedlings’ lipidome was assessed to decipher the role of lipid metabolism in alleviating seed dormancy. We observed significant (p < 0.05) improvement in seedling germination and seedling vigor in seeds primed with multiwalled carbon nanotubes functionalized with carboxylic acids. Phosphatidylcholine (PC 18:1/18:3), phosphatidylglycerol (PG 16:1/18:3), and lysophosphatidylcholine (LPC 18:3) molecular species (C18:3 enriched) were observed to be highly correlated with the increased seed germination percentages and the enhanced seedling vigor. Mechanistically, it appears that carbon nanoprimed seeds following stratification are effective in mediating seed dormancy by remodeling the seed membrane lipids (C18:3 enriched PC, PG, and LPC) in both peatland boreal forest species. The study results demonstrate that nanopriming may provide a solution to resolve seed dormancy issues by enhancing seed germination, propagation, and seedling vigor in non-resource boreal forest species ideally suited for forest reclamation following anthropogenic disturbances.
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Sharma, Sushma, Vikram Singh, Hemender Tanwar, et al. "Impact of High Temperature on Germination, Seedling Growth and Enzymatic Activity of Wheat." Agriculture 12, no. 9 (2022): 1500. http://dx.doi.org/10.3390/agriculture12091500.
Full textAbstract:
Global warming has increased the temperature significantly over a large extent both spatially and temporally. The threat of heat stress during the germination and seedling establishment stages in the wheat crop is now more prevalent than ever before. The present experiment assessed the effect of elevated temperature on the germination and early seedling growth of wheat genotypes. The seeds were sown under four temperatures, viz., 20 °C, 25 °C, 30 °C and 35 °C; the germination, seedling vigor and enzyme activities in 8-day-old seedlings were assessed. The temperature significantly influenced germination and early seedling growth. The germination percentage at 20 and 25 °C was statistically on par with and higher than at 30 and 35 °C. The seedling vigor parameters were maximum at 25 °C and showed a reduction at higher temperatures. Genotypic differences were observed for early heat stress as the genotypes WH 730, WH 1123 and HD 2967 showed tolerance towards heat stress during germination, whereas the genotypes PBW 725 and WH 1105 were susceptible. Antioxidant enzyme activities in seedlings increased with the rise in temperature. Catalase, peroxidase and superoxide dismutase enzymes showed increased activities at higher temperature levels.
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Kubar, Ishtiaque Hussain, Noor un nisa Memon, Naseem Sharif, et al. "COMPARATIVE STUDY OF ROOTSTOCKS AND THEIR EFFECTS ON STIONIC ESTABLISHMENT OF THE MANGO SEEDLINGS." Pakistan Journal of Biotechnology 20, no. 02 (2023): 146–52. http://dx.doi.org/10.34016/pjbt.2023.20.02.778.
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To explore the quality rootstock which impart better stionic establishment of the mango seedlings, we studied the comparative effect of scion and rootstock using three mango scion varieties (Sindhri, Chaunsa and Neelum) grafted on three rootstocks i.e. Ratam, Pado and Sindhri. Parameters including seed germination (%), seedling height (cm), leaves seedling rootstock-1, seedling vigor index (SVI), fresh biomass of shoot and roots (g), dry biomass of shoot and roots (g), chlorophyll content (rg), rootstock diameter (mm), scion diameter (mm), stionic ratio, leaves graft-1 and sturdiness quotient were studied. Results showed the best seed germination (88.33%), seedling vigor index (5158.74), and sturdiness quotient (3.89) in Pado rootstock. However maximum fresh biomass of shoot (20.67 g), fresh biomass of roots (16.2 g), dry biomass of shoot (12.65 g), dry biomass of roots (8.33 g) and scion diameter of the rootstocks were observed in Sindhri rootstocks. Regarding grafting data, the best stionic ratio (0.93) was observed from the scion and rootstock combination of Neelum and Pado rootstock. It was concluded that Pado rootstock performed better in terms of seedling rootstock and for successful stionic establishment of the mango seedlings
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Kim, Song Lim, Yong Suk Chung, Hyeonso Ji, et al. "New Parameters for Seedling Vigor Developed via Phenomics." Applied Sciences 9, no. 9 (2019): 1752. http://dx.doi.org/10.3390/app9091752.
Full textAbstract:
Early seedling establishment in rice (Oryza sativa L.), which is measured by primary/secondary tiller, shoot length, biomass, root-related traits, and leaf area index, is an important trait because it helps to compete for light, air, and water for better tolerating various abiotic stresses. Consequently, it can affect the yield. However, there are not many research studies on this subject. Furthermore, previous studies have only measured the target traits once. However, this does not reflect the variation of growth rate during the seedling stage. Thus, two data points, two weeks and four weeks after planting, were used in the current study. As a result, two QTL regions were detected for the growth differences via plant height and green area (reflecting tillering). We expect that these results can be utilized by breeders to evaluate and select vigorous seedlings for their breeding programs.
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Baggett, James R., and Janice Tibbs. "Relationship between Starchy versus Sugary Endosperm and Head Smut Susceptibility of Corn Seedlings." HortScience 27, no. 5 (1992): 438–40. http://dx.doi.org/10.21273/hortsci.27.5.438.
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Incidence of head smut [Sphacelotheca reiliana (Kuhn) Clinton] in F corn (Zea mays L.) families derived from homozygous starchy (Su) F ears was less than that observed in starchy or sugary (su) families derived from segregating ears or sugary families derived from homozygous sugary ears. This difference was observed at high levels of disease incidence resulting from clipping seedlings and at a lower disease incidence in unclipped plants. Differences in seedling vigor and earliness of starchy and sugary families and differences related to homozygous and heterozygous sources suggest that seedling vigor may be involved in the observed differences in head smut susceptibility.
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Seadh, S. E., M. A. Badawi, M. A. Abdel-Moneamand, and M. M. E. Borham. "Germination and Seedling Parameters of Wheat as Affected by Storage Conditions." IOP Conference Series: Earth and Environmental Science 904, no. 1 (2021): 012035. http://dx.doi.org/10.1088/1755-1315/904/1/012035.
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Abstract A storage experiment was carried out from 27th April to 27thDecember, 2019 to study the effect of storage conditions i.e. methods (open air, under sunshade and in stores), packages type (normal, gunny, polyethylene and metal containers) and periods of seeds fumigation with phosphine (15, 30 and 45 days) on germination and seedling parameters of wheat. The experiment was arranged in a factorial experiment in randomized complete block design (R.C.B.D.) with four replications. Stored wheat seeds under sunshade produced the highest values of final germination percentage, germination index, mean germination time, plumule length, radical length, seedling vigor index and seedlings dry weight, followed by stored wheat seeds in stores. The highest germination index, mean germination time, plumule and radical lengths, seedling vigor index and seedlings dry weight were recorded in the samples of wheat seeds sealed stored in metal containers, followed by normal stored in gunny packages. The highest percentage of final germination was obtained by normal stored in gunny packages, followed by sealing storage in metal containers. The highest final germination percentage, germination index, mean germination time, plumule length, radical length, seedling vigor index and seedlings dry weight and the lowest abnormal seedlings percentage, rotten and sold seeds percentages, speed germination index, co-efficient of germination and germination energy percentage were recorded when treated with phosphine at the rate of 3 tablets/m3after 15 days from beginning the storage. This study recommended that stored wheat seeds under sunshade in metal packages and treating with phosphine at the rate of 3 tablets/m3 after 15 days from beginning the storage to enhance germination and seedlings parameter of wheat under the environmental conditions of Dakahlia Governorate, Egypt.