Relevant bibliographies by topics / Epigeal germination

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  2. Dissertations / Theses

Academic literature on the topic 'Epigeal germination'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Epigeal germination"

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Lobo, Gabriela Alves, Denise Garcia de Santana, Antonieta Nassif Salomão, Luciana Salazar Rehbein, and Angélica Polenz Wielewicki. "A technological approach to the morphofunctional classification of seedlings of 50 Brazilian forest species." Journal of Seed Science 36, no. 1 (2014): 87–93. http://dx.doi.org/10.1590/s2317-15372014000100011.

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A technological approach to the morphofunctional classification of forest species seedlings defines the essential structures in the evaluation of germination testing and identifies changes in this structures that suggest abnormalities. The objective was to associate morphofunctional seedling classification to seed germination testing using official germination methods for 50 forest species from Amazon, Caatinga, Cerrado, Atlantic Forest and Pantanal biomes. Morphofunctional classification and abnormalities were defined using seedlings from 232 germination pre-tests and 1,160 samples that were formed for each species using seeds from distinct locations and with at least three levels of vigor. The phanero-epigeal germination with a non-developed epicotyl predominated among species (84%). Common in hypogeal germination, the development of the epicotyl occurred only in seedlings of Anadenanthera colubrina and Erythrina speciosa, both with epigeal germination. The need to supply and sustain the great mass produced in its long life cycle, the presence of the primary root was considered essential for the normal seedling classification of these forest species. Curled, stunted, necrotic, bifurcated primary root and those retained in the seed coat or in the fruit structures, were the main abnormalities of the seedling root systems. Damages to the shoot system were uncommon.
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Polli, Anderson, Mariza Barion Romagnolo, Luis Antonio de Souza, and Lindamir Hernandez Pastorini. "Influence of the functional traits of seeds on germination dynamics and morphofunctional pattern of the seedlings." Acta Scientiarum. Biological Sciences 42 (July 3, 2020): e52154. http://dx.doi.org/10.4025/actascibiolsci.v42i1.52154.

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Aiming to compare morphofunctional features related to dispersion and establishment of plants, this study evaluated seed biometry and biomass, as well as germination and emergence potential in eight plant species native to the Semideciduous Seasonal Forest. Biometric measurements and biomass of seeds were obtained with a caliper and a precision scale. Afterwards, they were subjected to a germination test in BOD chambers under constant temperature and 12 hours photoperiod, and sown in styrofoam trays containing organic substrate and sand, kept in full sunlight. Data from germination and emergence was subjected to cluster analysis, according to the functional morphotype of the seedling. Most species presented seeds with a rounded shape, uniform staining at the mature stage, varied coat consistency, two types of dispersal syndromes (anemochory and zoochory) and four morphofunctional patterns in developing seedlings (crypto-hypogeal-storers, crypto-epigeal-storers, phanero-epigeal-storers and phanero-epigeal-foliaceous). The species belonging to group I (Albizia niopoides, Cedrela fissilis, Pterogyne nitens and Randia ferox) have foliaceous photosynthetic cotyledons and group II (Cabralea canjerana, Eugenia pyriformis, Inga laurina and Poecilanthe parviflora) have a reserve cotyledon. Species of group I had higher means in the percentage and rate of germination, less variability and amplitude of days for seedlings emergence. On the other hand, species of group II showed higher mean values in seed biometry and biomass. Thus, seeds with foliaceous cotyledons have an optimized development because of luminosity, whereas seeds with reserve tend to have slower development, remaining at the seedling stage for a longer time.
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Kuswantoro, Farid. "Seed and Germination Study of a New Guinea Endemic Plant Species Grevillea papuana Diels." Journal of Tropical Biodiversity and Biotechnology 6, no. 1 (March 1, 2021): 61115. http://dx.doi.org/10.22146/jtbb.61115.

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Grevillea papuana is a culturally important endemic plant species of New Guinea highland. Although G. papuana conservation and propagation attempts were already conducted, this species seed and germination characters information were still very limited. This study aimed to provide information regarding G. papuana seed and germination biology. Seed characteristic and germination trials were conducted in this study. Data analysis was conducted descriptively, while germination parameters were also calculated. G. papuana has a light, elliptic, and winged seed. The species germination was low and ununiform with phanerocotylar epigeal foliaceous (PEF) seedling functional type.
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Chima, Judith Uchenna, and Temitope Omolayo Fasuan. "Antioxidants, nutritional, antinutrients and functional characteristics of black turtle bean (Phaseolus vulgaris): synergistic and antagonistic interrelationship of epigeal germination periods." Nutrition & Food Science 51, no. 7 (February 9, 2021): 1029–50. http://dx.doi.org/10.1108/nfs-09-2020-0356.

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Purpose Black turtle bean has nutritional potentials in the human diet and could provide a significant amount of food in developing countries. Low consumption of black beans has been attributed partly to the hard-to-cook phenomenon which requires a long time of cooking. Germination improves nutritional, functional, bioactive compounds, reduces anti-nutrients and cooking time. Germinated black turtle bean can contribute to efforts geared towards the production of functional foods and the fight against protein malnutrition. This study aims to investigate the changes in the nutritional, antioxidants and functional properties of black turtle bean due to different epigeal germination times to increase its utilization in food systems. Design/methodology/approach Black turtle bean seeds (Phaseolus vulgaris) were cleaned, winnowed, washed, soaked for 16 h, drained and subjected to epigeal germinated at ambient temperature for 0, 24, 48, 72 and 96 h, respectively. The germinated seeds were dried, dehulled, milled and sieved. Proximate, antioxidant properties and activity, anti-nutrients, mineral (calcium, phosphorus, iron, sodium, manganese, copper, potassium, zinc and magnesium) and functional properties (water absorption capacity, oil absorption, bulk density, swelling index, water solubility index and gelling concentration) of the germinated black turtle bean (GTB) flour (0GTB, 24GTB, 48GTB, 72GTB and 96GTB) were determined using standard procedures. Findings The ash, protein, fat and fibre contents of the black turtle bean were significantly increased through germination. Germination resulted in changes in the antioxidant activity of the black turtle bean samples. The mineral content of the black bean samples was improved significantly by germination and as well altered the functional properties (p < 0.01). Oxalate and phytate were significantly reduced with increased germination time (p < 0.01). In total, 96 h germination (96GTB) had better antioxidant activity, mineral and proximate composition with lower anti-nutrients. Originality/value Germination for 96 h proved to be the optimum time for improved mineral content, increased protein, ash, fibre, antioxidant activity and property with reduced antinutrients. Germination represents an attractive, inexpensive means of improving the nutritional profile and enhancing the bio-functionality of the black turtle bean. The epigeal germinated turtle bean could find applied as a functional ingredient in food formulation.
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Gentallan Jr., R. P., L. E. Endonela, and N. C. Altoveros. "Distinct epigeal cryptocotylar germination pattern of Anacolosa frutescens (Olacaceae)." Seed Science and Technology 45, no. 2 (July 1, 2017): 504–9. http://dx.doi.org/10.15258/sst.2017.45.2.11.

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Kondo, Tetsuya, Mizuki Narita, Shyam S. Phartyal, Siti N. Hidayati, Jeffrey L. Walck, Jerry M. Baskin, and Carol C. Baskin. "Morphophysiological dormancy in seeds ofConvallaria keiskeiand a proposal to recognize two types of double dormancy in seed dormancy classification." Seed Science Research 25, no. 2 (March 27, 2015): 210–20. http://dx.doi.org/10.1017/s0960258515000136.

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AbstractConvallariamajalishas double dormancy and hypogeal germination, but no information is available on embryo growth or on the effects of light and gibberellic acid (GA3) on germination in this genus. Therefore, we investigated embryo growth and other germination features in seeds ofC. keiskeiand compared the data with those ofTrillium camschatcensein another study. Until now, in seeds with double dormancy, embryo growth and germination (epigeal) have been studied in detail only for seeds ofT. camschatcense. Phenology of embryo growth and emergence of cotyledonary petiole/root (hereafter root) and shoot in seeds ofC. keiskeiwere monitored outdoors. Effects of temperature, light and GA3on embryo growth and root and shoot emergence were tested under laboratory conditions. Roots emerged the first spring following seed dispersal in autumn. The embryo grew soon after root emergence, and germination was hypogeal. Seeds with an emerged root formed buds from which a shoot (leaf) emerged above ground during the second spring. Alternating temperatures and light had negative effects on root emergence, and GA3did not substitute for cold stratification in root emergence. Seeds ofC. keiskeihave double dormancy, but it differs from that inT. camschatcense. Based on differences in embryo growth before (T. camschatcense) versus after (C. keiskei) root emergence, and on epigeal (T. camschatcense) versus hypogeal (C. keiskei) germination, we suggest that two types of deep simple double morphophysiological dormancy (MPD) be recognized. Since embryo growth inC. keiskeidoes not fit the standard definition of MPD, we propose to expand this definition.
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Duarte, Manoela Mendes, Sheilly Raquelly Prado de Paula, Flaick Rodrigo de Lima Ferreira, and Antonio Carlos Nogueira. "Morphological characterization of fruit, seed and seedling and germination of Hymenaea courbaril L. (Fabaceae) ('Jatobá')." Journal of Seed Science 38, no. 3 (August 22, 2016): 204–11. http://dx.doi.org/10.1590/2317-1545v38n3159734.

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Abstract This study has aimed to characterize the morphology of fruit, seed and seedling and evaluate the germination of Hymenaea courbaril L., under different substrates and temperatures. The physical characteristics were determined, as well as the morphological description of the internal and external parts of fruits and seeds, stages of germination and early seedling development. Germination tests were conducted in a completely randomized design, in a 3x2 factorial scheme, with three temperatures (20 °C, 25 °C and 30 °C) and two substrates (sand and vermiculite), with six plots of 30 seeds. The germination percentage, germination speed index (GSI) and mean germination time (MGT) were calculated. The fruits are dry and woody and the seeds are exalbuminous, with an axial embryo. The germination is epigeal and the seedling is phanerocotylar. The combination of vermiculite or sand associated to temperatures of 25 °C or 30 °C is effective for conducting the germination tests.
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Sultana, Nahid, M. Oliur Rahman, and Md Abul Hassan. "Seed Germination in Six Anticancerous Plants of Bangladesh." Journal of the Asiatic Society of Bangladesh, Science 45, no. 2 (December 28, 2019): 151–59. http://dx.doi.org/10.3329/jasbs.v45i2.46589.

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Six medicinal plants, namely Boerhavia diffusa L., Calotropis procera (Ait.) R. Br., Jatropha gossypifolia L., Leonurus sibiricus L., Plumbago zeylanica L. and Ricinus communis L. of Bangladesh having anticancerous properties were investigated with a view to knowing their seed germination time, rate and pattern. The minimum days taken for seed germination in B. diffusa, C. procera, J. gossypifolia, L. sibiricus, P. zeylanica and R. communis were 70, 9, 24, 75, 11 and 14, respectively. The maximum time (130 days) required for germination was observed in Leonurus sibiricus. The highest germination rate (100%) was observed in Plumbago zeylanica, while the lowest rate (10%) was found in Ricinus communis. Epigeal type of germination was noted in all the species employed. Asiat. Soc. Bangladesh, Sci. 45(2): 151-159, December 2019
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Serrano-Casas, Héctor, Eloy Solano-Camacho, and Adelaida Ocampo-López. "Morfología de semilla, germinación y desarrollo postemergente de tres especies del género Polianthes L. (Agavaceae)." Botanical Sciences, no. 66 (May 27, 2017): 55. http://dx.doi.org/10.17129/botsci.1611.

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The seed germination process and seedling development were studied for Polianthes geminiflorn (Lex.) Rose var. geminiflom, Polianthes sp . and P. longiflom Rose. The seed viability test estimated was from 94 to 100%. In seeds treatment by soaking the seeds in water at 25ºC during three, six and twelve hours, the germination percentage, velocity and germination uniformity were increased like control assay. On the other hand, P geminiflorn var. geminiflora. were more resistent than Polianthes sp. and P. longiflora. seeds to a treatment of three, six and twelve hours in water a t 40ºC. The three species had epigeal germination and their cotyledon developed a haustorium. None of this species exhibited seed dormancy and they were orthodox. There were significant differences in the first leave length between the three species. The seed morphology, germination behavior and seedlings development were very similar.
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Ghosh, Arijit, and Pankaj K. Pal. "Seedling phenology ofClerodendrum indicumexhibiting the unusual epigeal cryptocotylar type of germination." Acta Botanica Gallica 162, no. 3 (April 10, 2015): 233–37. http://dx.doi.org/10.1080/12538078.2015.1023218.

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Dissertations / Theses on the topic "Epigeal germination"

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VLČKOVÁ, Vlasta. "Biologické pokusy ve škole se zaměřením na klíčivost a vzcházivost semen." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-381836.

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The education of natural history at primary and seconadry school is nowadays focused on theoretical interpretation. The subject of this diploma thesis is to inform pupils about the stimulating and inhibiting substances´influence on seed germination and emergence. This diploma thesis needs practical approach to pupils during the project basing, documenting seed germination, growing and its evaluation. The aim of this diploma thesis is to practically show to pupils the problems of seed germination and emergence of commonly available seeds in the school environment.
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