Academic literature on the topic 'Open pollinated variety'
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Journal articles on the topic "Open pollinated variety"
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Kulawiec, Mariola, Elżbieta Teske, and Renata Śnieżko. "The selfcompatibility in Impatiens balsamina (a long-day variety)." Acta Societatis Botanicorum Poloniae 65, no. 1-2 (2014): 107–9. http://dx.doi.org/10.5586/asbp.1996.018.
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Pollination and seed-setting in <em>Impatiens balsamina</em> (a long-day variety, originated from the Frankfurt Botanical Garden) were studied. Flowers were isolated from insect pollinators, or were openly pollinated. Plants of both groups set seeds, but open pollinated had 10% more seeds. Microscopic analysis showed that flowers could be selfpollinated before anthesis. The pollen tubes grew to the ovary and fertilized the ovules. After selfing, the normal endosperm and embryo developed. The viability of seeds was similar to that after crosspollination.
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YARMOLICH, S. A., and G. M. MARUDO. "QUALITY ASSESSMENT OF FRUITS OF PROMISING APPLE TREE HYBRIDS OF THE BELARUSIAN SELECTION." Fruit-Growing 34 (August 8, 2022): 7–11. http://dx.doi.org/10.47612/0134-9759-2022-34-7-11.
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The article provides an assessment of the quality of fruits of promising apple tree hybrids of the Belarusian selection.
 Promising hybrids with a complex of economic and biological characteristics (appearance, taste, keeping quality, marketability)
 were identified – 2005-15/2-I (96-41/5 × Golab Kohanz), 2005-16/1-I (Zorka × Start), 2006-23/26-II (Nadzejny open
 pollinated). This sampling will be used in subsequent hybridizations and eventually submitted for the state crop variety testing. Sources of high taste qualities of fruits were identified – 2005-15/2-I (96-41/5 × Golab Kohanz), 2005-16/1-I (Zorka ×
 × Start), 2006-23/26-II (Nadzejny open pollinated), 2006-24/33-I ([Prima × 85-12/88] × Diyament), 2006-29/26-II (Macfree
 open pollinated) and 2006-29/42-II (2000-7/65 open pollinated);
 attractive appearance – 2005-15/2-I (96-41/5 × Golab Kohanz), 2005-16/1-I (Zorka × Start), 2006-23/26-II (Nadzejny
 open pollinated) 2006-29/26-II (Macfree open pollinated) and 2006-29/42-II (2000-7/65 open pollinated.);
 large-fruited – 2005-15/2-I (96-41/5 × Golab Kohanz), 2005-16/1-I (Zorka × Start), 2006-23/26-II (Nadzejny open
 pollinated), 2006- 29/42-II (2000-7/65 op.), 2005-8/11-II (open pollinated by domestic varieties);
 long storage period – 2005-15/2-I (96-41/5 × Golab Kohanz), 2005-16/1-I (Zorka × Start), 2006-23/26-II (Nadzejny open
 pollinated.), 2006-24/33-I ([Prima × 85-12/88] × Diyament).
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Boyhan, George E., Suzzanne Tate, Ryan McNeill, and Jeffrey McConnaughey. "Evaluation of Tomato Varieties under Organic Production Practices in Georgia." HortTechnology 24, no. 2 (2014): 252–58. http://dx.doi.org/10.21273/horttech.24.2.252.
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Tomato (Solanum lycopersicum) is a popular crop among organic growers, particularly open-pollinated varieties; however, there is a lack of information evaluating these varieties in comparison with commercial F1 hybrids. This study was undertaken to compare conventionally produced commercial F1 tomato varieties available in the southeastern United States with open-pollinated varieties popular among organic growers. Nineteen tomato varieties were evaluated in 2011 and 2012 using the U.S. Department of Agriculture National Organic Program guidelines; however, the land used had not been in 3 years of organic production. Staked tomatoes were grown on plastic mulch. Data collected included early and total graded yield. In general, F1 hybrid, determinate or semideterminate varieties, had the best early and total yields compared with open-pollinated varieties. HSX 8115H and ‘Celebrity’ had the highest early total yield. ‘Costoluto Fiorentino’, an open-pollinated variety, also had good early total yield, but significantly less than HSX 8115H or ‘Celebrity’. ‘Costoluto Fiorentino’ was the only open-pollinated variety among the five highest yielding varieties for early total yield. In addition, ‘Celebrity’ had the greatest total yield of all the entries tested. All of the top five varieties for total yield were F1 hybrids and either determinate or semideterminate types. ‘Costoluto Fiorentino’ had total yield of 22,046 lb/acre, which was 14.3% lower than the lowest yielding variety in the top five yielding varieties. ‘Florida Pink’ had the largest average fruit weight, which also had the lowest total yield of all the entries. Although the open-pollinated varieties, popular among organic and local growers, yielded less than F1 hybrids, they may possess characteristics of color, flavor, or texture that are desired and were not evaluated in this study. This may be an opportunity for plant breeders to develop varieties desired by local organic growers that have unique characteristics, in addition to high yields and disease resistance.
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R.V. Nair, P.M. Jacob, M.G. Rajesh, and R.J. Thomas. "INCIDENCE OF ROOT (WILT) DISEASE IN VARIOUS CROSS COMBINATIONS OF WEST COAST TALL VARIETY OF COCONUT." CORD 19, no. 01 (2003): 34. http://dx.doi.org/10.37833/cord.v19i01.369.
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Root (wilt) disease is a very serious disease of coconut in eight southern districts of Kerala, India. A comprehensive breeding programme – the only practical solution for the management of the disease – was started at Central Plantation Crops Research Institute (CPCRI), Kayangulam during 1987. Coconut seedlings, belonging to five cross combinations with WCT viz. WCT (Inter se), West Coast Tall (WCT) (Self), WCT (Mixed Pollen), Chowghat Green Dwarf (CGD) x WCT and WCT (Open Pollinated) were studied for their incidence of root (wilt) disease. All the seedlings were planted during 1992 except CGD x WCT which was planted during 1991. In the absence of a mass screening technique under artificial conditions, assessment of resistance was based on natural infection. The progenies belonging to various cross combinations of WCT x WCT showed significant variability for incidence of root (wilt) disease. Observations, recorded during September 2002, revealed that the incidence of root (wilt) varied from 53.4 to 55.2 % in WCT x WCT crosses whereas CGD x WCT had 64.5 %. Open pollinated seedlings from healthy mother palms contracted 70 % incidence of the disease. The studies showed superiority of artificially pollinated seedlings (full sibs) over the open pollinated seedlings (half sibs) with regard to their susceptibility to the disease.
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Tungalag, M., and M. Ariungerel. "The study of open-pollinated maize variety under non-irrigated condition." Mongolian Journal of Agricultural Sciences 17, no. 1 (2017): 27–30. http://dx.doi.org/10.5564/mjas.v17i1.723.
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Maize is the one of the world leading crop. 90% of the maize produced in industrialized countries is grown in temperate production environments which mean that Mongolia has potential to grow maize plant. Three open-pollinated varieties (OPV) were studied in Institute of Plant and Agricultural Sciences to compare growing potential under non-irrigated condition. Mongolian corn population showed high significance than the other two on yield related traits, ear length, kernel length, fresh ear weight, tassel length and number of kernel per row. The result showed that studied OPV can yield under rain-fed condition and can be distributed to the farmers.
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Aqil, Muhammad, N. N. Andayani, T. Fahdiana, and Suwardi. "Fuzzy model for clustering open pollinated maize variety released in Indonesia." IOP Conference Series: Earth and Environmental Science 484 (June 20, 2020): 012046. http://dx.doi.org/10.1088/1755-1315/484/1/012046.
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Ulm, Florian, David Avelar, Peter Hobson, et al. "Sustainable urban agriculture using compost and an open-pollinated maize variety." Journal of Cleaner Production 212 (March 2019): 622–29. http://dx.doi.org/10.1016/j.jclepro.2018.12.069.
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Hussain, Aamir, Ghulam Murtaza, Waseem Akbar, et al. "Sweet-1: 1st Ever Sweet Corn Open Pollinated Variety in Punjab Pakistan." Biological and Clinical Sciences Research Journal 6, no. 1 (2025): 173–76. https://doi.org/10.54112/bcsrj.v6i1.1572.
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Sweet corn (Zea mays L. var. saccharata) is a specialty type of maize primarily consumed after roasting. Despite its growing demand, its cultivation remains limited in Pakistan, and no officially approved sweet corn variety has been available for general cultivation. The development of a high-yielding, disease-resistant variety is crucial to reducing import dependency and enhancing local production. Objective: To develop and evaluate a high-yielding, disease-resistant sweet corn variety suitable for general cultivation in Pakistan, focusing on its agronomic performance, disease resistance, and yield potential. Methods: The variety Sweet-1 was developed through recurrent selection from the base population Yusafwala Pool-30, undergoing five selection cycles for enhanced grain yield and quality traits. The variety was assessed in station trials and National Uniform Maize Yield Trials across Pakistan, comparing its performance with a local landrace. Agronomic evaluations were conducted to determine optimal planting conditions during the Kharif and spring seasons. Resistance to Fusarium moniliforme (stalk rot) was tested over two growing seasons. Statistical analyses were performed to compare yield differences between Sweet-1 and the check variety. Results: Yield Performance: Sweet-1 exhibited a 28% higher yield in station trials and a 10% higher yield in national trials compared to the check variety.Disease Resistance: The variety demonstrated moderate resistance to stalk rot (Fusarium moniliforme), showing stable performance across two seasons. Agronomic Optimization: Kharif season: Best results were obtained with row-to-row spacing of 75 cm and plant-to-plant spacing of 15 cm. Spring season: Plant-to-plant spacing of 17.5 cm was found to be optimal for maximum grain yield. Conclusion: The approval and adoption of Sweet-1 will provide a high-quality sweet corn variety for general cultivation in Pakistan. Its higher yield potential, disease resistance, and optimized agronomic practices will contribute to enhanced local production, reducing reliance on imports and lowering the import bill.
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Enujeke, E. C. "Effects of Variety and Spacing on Yield Indices of Open-Pollinated Maize in Asaba Area of Delta State." Sustainable Agriculture Research 2, no. 4 (2013): 1. http://dx.doi.org/10.5539/sar.v2n4p1.
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<p>This study was carried out in the Teaching and Research Farm of Delta State University, Asaba Campus (Nigeria) from March to December in 2008 and replicated between March and December, 2009, to evaluate the effects of variety and spacing on yield indices of Open-pollinated maize. It was a factorial experiment carried out in a Randomized Complete Block Design (RCBD) with four replicates. Four open-pollinated varieties (Suwan -1- SR, ACR97, BR9922-DMRSF<sub>2</sub> and AMATZBRC<sub>2</sub>WB) were evaluated under three different plant spacing for such yield indices as number of cobs/plant, cob length, grain weight and number of grains/cob of maize. The results obtained indicated that variety BR9922-DMRSF<sub>2</sub> was outstanding with number of cobs/plant of 1.7 in both 2008 and 2009, cob length of 27.7 cm and 26.7 cm in 2008 and 2009, respectively. Its grain weight was 4.7 t/ha in 2008 and 4.9 t/ha in 2009, and its number of grain/cob was 467.7 in 2008, and 463.9 in 2009. Plants sown at spacing of 75 cm x 15cm had higher number of cobs/plant of 1.9 in both 2008 and 2009.Their grain weights (t/ha) were 5.0 in 2008 and 5.2 in 2009, their cob lengths were 18.6cm in 2008 and 20.1cm in 2009, while their number of grains/cob were 363.0 in 2008, and 369.0 in 2009. The results of interaction showed that except variety x space, the parameters investigated were all significantly (P &lt; 0.05) different and affected yield indices of open-pollinated maize. Based on the findings of the study, it was recommended that (i) open-pollinated variety BR9922-DMRF<sub>2 </sub>be grown in the study area for increased grain yield indices of maize. (ii) Plant spacing of 75 cm x 15 cm which resulted in higher number of cobs/plant and higher grain weight be adopted in maize production.</p>
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Deyto, Rodelina, and Cleofas Cervancia. "Floral Biology and Pollination of Red Hot F1 Hybrid Hot Pepper (Capsicum frutescens x C. annuum) in the Philippines." Philippine Agricultural Scientist 105, no. 2 (2022): 135–48. http://dx.doi.org/10.62550/kcd134021.
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The floral biology and pollination of Red Hot F1 variety hot pepper, Capsicum frutescens x C. annuum, were studied in this paper. Its flowers are herkogamous and inodorous, and the pollen and nectar serve as rewards to visitors. Anthesis occurred during morning, from 0600 h to 1000 h and peaked on the second day. The pollen grains are simple and numerous with high viability, 96 ± 1.06%. Receptivity of stigma synchronized with pollen viability. This hot pepper variety is partially protogynous. The asynchronous flowering, dichogamy, and herkogamy in hot pepper are their adaptive strategies to promote outcrossing and for reproductive assurance. Four insect species visited the flowers but only the carpenter bee, Xylocopa sp., and the stingless bee, Tetragonula biroi (Friese), are the true pollinators. The foraging activity, which peaked at 0900 h, synchronized with anthesis. Fruit set in an open-pollinated (87 ± 13.12%) and hand-pollinated plants (84 ± 19.37%) were significantly higher than in the control (26 ± 14.30%). Open-pollinated plants produced fruits and seeds with significantly higher quantity and quality.
Dissertations / Theses on the topic "Open pollinated variety"
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Vieira, Jefferson. "Tolerância à desfolha em diferentes estádios fenológicos de cultivares de milho com bases genéticas contrastantes." Universidade do Estado de Santa Catarina, 2012. http://tede.udesc.br/handle/handle/1142.
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Previous issue date: 2012-08-21<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Maize has low vegetative plasticity, because it normally does not tiller, it has limited capacity to expand the leaf blade and it does not alter the number of expanded leaves due to changes in environment or management. Therefore, damages in leaf area caused by defoliation can decrease grain yield and increase the occurrence of base stalk rots (BSR) and rot grains (RG), reducing grain quality. The cultivar`s genetic variability may interfere on the extension of damages caused by defoliation. This research was carried out aiming to quantify grain yield losses and the effect on base stalk rot (BSR) and rot grains (RG) caused by defoliation at different growth stages of maize cultivars with contrasting genetic variability. A field experiment was set in Lages-SC, during the growing seasons of 2010/11 and 2011/2012. Three cultivars were tested: the open pollinated variety (OPV) SCS 155 Catarina, the triple hybrid (TH) P30B30 and the single-cross hybrid (SC) P30R50H. Each cultivar was defoliated when plants had eight (V8), 12 (V12), 16 (V16) and 20 (V20) expanded leaves. A control treatment without defoliation was also assessed. The experiments were sown in the no-tillage system on 10/22/2010 and 10/19/2011. The plant density of 60,000 pl ha ֿ1 and the row spacing of 0.7 m were used in the trial. Defoliations performed at V8 and V12 did not affect the SC and TH grain yield, but they decreased the OPV productivity. The defoliation performed at V20 reduced by more than 70% the grain yield of all cultivars. The removal of eight and 12 leaves did not increase the incidence of BSR and the percentage of broken plants in comparison to the control. Late defoliations performed at V16 V20 weakened the stalk, increasing the occurrence of BSR and broken plants for the three cultivars. The greater genetic variability of OPV SCS 155 Catarina was not efficient to minimize grain yield losses caused by defoliation, neither to decrease the incidence of base stalk rot nor rot grains, in comparison to the hybrids P30B30 and P30R50H<br>A cultura do milho possui baixa plasticidade vegetativa, pois normalmente não perfilha, apresenta limitada capacidade de expansão do limbo foliar e não altera o número de folhas expandidas devido a mudanças no ambiente ou no manejo. Os danos na área foliar ocasionados pela desfolha podem reduzir o rendimento de grãos e aumentar a ocorrência de podridões da base do colmo (PBC) e de grãos ardidos (GA), depreciando a qualidade dos grãos. A variabilidade genética da cultivar pode interferir na magnitude dos danos ocasionados pela desfolha. Esta pesquisa teve como objetivos quantificar os prejuízos no rendimento de grãos e a influência sobre PBC e GA, ocasionados pela desfolha imposta em diferentes estádios fenológicos em cultivares de milho com bases genéticas contrastantes. O experimento foi conduzido a campo, no município de Lages-SC, nos anos agrícolas de 2010/11 e 2011/12. Foram testadas três cultivares de milho: a variedade de polinização aberta (VPA) SCS 155 Catarina, o híbrido triplo (HT) P30B30 e o híbrido simples (HS) P30R50H. Cada cultivar foi desfolhada quando as plantas tinham oito (V8), 12 (V12), 16 (V16) e 20 (V20) folhas expandidas e foi mantida uma testemunha com folhas intactas. Os experimentos foram implantados no sistema de semeadura direta, em 22/10/2010 e 19/10/2011. A densidade utilizada foi de 60.000 plantas ha-1 e o espaçamento entre linhas de 0,7m. As desfolhas realizadas em V8 e V12 não comprometeram o rendimento de grãos do HS e do HT, mas reduziram o rendimento da VPA. A desfolha realizada em V20 reduziu em mais de 70% o rendimento de grãos das três cultivares. A remoção de oito e 12 folhas não aumentou a incidência de PBC e a percentagem de plantas quebradas, em relação à testemunha. As desfolhas mais tardias (V16 e V20) aumentaram a ocorrência de PBC e de plantas quebradas das três cultivares. A maior variabilidade genética da VPA SCS 155 Catarina não foi eficaz para minimizar as perdas ocasionadas pela desfolha no rendimento de grãos, nem tão pouco para diminuir a incidência de podridões da base do colmo e grãos ardidos, em comparação aos híbridos P30B30 e P30R50H
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ABDI, Bedru Beshir. "Access to Seed and Variety Adoption of Farmers in Ethiopia : A Case of Open Pollinated Maize in Drought-Prone Central Rift Valley." Thesis, 2013. http://hdl.handle.net/2237/18155.
Full textBook chapters on the topic "Open pollinated variety"
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Murren, Courtney J. "Forest Fragmentation Effects on Pollination and Plant Genetic Structure." In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science. Smithsonian Institution Scholarly Press, 2024. https://doi.org/10.5479/si.26880769.
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<p dir="ltr">During the construction of the Panama Canal, forested hilltops were isolated from other forested areas by water. These islands in Lake Gatun, the largest of which is Barro Colorado Island (BCI), provide an excellent study system for examining population dynamics, gene flow, and species interactions in a fragmented forest landscape. A three-year study of the reproductive ecology of the functionally dioecious epiphytic orchid Catasetum viridiflavum showed that its specialized Euglossine bee pollinator, Eulaema cingulata, moved across the water to pollinate the orchids. Genetic structure analyses suggest interconnection among sites. Reproductive output and fruit set in fragments, however, varied across sites and years. Findings on genetic structure of trees and shrubs on BCI, and abundance patterns of pollinators and seed dispersers further the picture of the effects of forest fragmentation. Many open questions remain and advances in technology offer opportunities for interesting future work in the region and in fragmented habitats.</p><p><br></p>
Conference papers on the topic "Open pollinated variety"
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Kurniawan, Helmi, and Chotimatul Azmi. "Bobot 1000 Butir dan Kualitas Benih Tujuh Lot Varietas Cabai Open Pollinated (OP)." In Seminar Nasional Semanis Tani Polije 2021. Politeknik Negeri Jember, 2021. http://dx.doi.org/10.25047/agropross.2021.224.
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Kualitas benih dapat diketahui setelah pengujian mutu benih di laboratorium. Pengujian mutu benih cabai dilakukan di Laboratorium benih terakreditasi dari tujuh lot benih cabai OP dan diulang dua kali. Pengamatan dilakukan untuk daya berkecambah, kadar air, kemurnian fisik dan bobot 1000 butir. Hasil menunjukkan bahwa varietas dan lot berpengaruh terhadap karakter daya berkecambah, kadar air benih dan bobot 1000 butir.
Reports on the topic "Open pollinated variety"
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Delate, Kathleen, Robert Burcham, Heather Friedrich, Noreen Wantate, and Kendall Lamkey. Open-pollinated Corn Variety Trial, 2001. Iowa State University, Digital Repository, 2002. http://dx.doi.org/10.31274/farmprogressreports-180814-630.
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