نتایج جستجو برای: assisted selection in rice germination traits breeding methods
تعداد نتایج: 17220727 فیلتر نتایج به سال:
Current research was performed to identify molecular markers associated to phonological traits including days to tillering, days to stem elongation, days to heading, days from stem elongation to heading, grain filling period and days to physiological maturity based on 407 AFLP and SSR markers in 148 barley cultivars by association mapping. This experiment was conducted in two alpha lattice desi...
Application of selection index for screening desired plants based on complex quantitative traits can be more effective than direct selection. This study was conducted using an F2 rice population consisting of 87 plants derived from a cross between two cultivars Gharib and IR28. The purpose was to establish suitable selection indices for increasing yield and its related traits in research farm...
In order to investigate the relationship between morphological properties and choose suitable criteria for improving this research yield on ten new breeding lines and varieties of rice (control) modified rice cultivation area (Shiroodi cultivar) in the crop during 2010 in Tonekabon Rice Research Station in a randomized complete block design with four replications. The results showed that rice g...
a 7×7 complete diallel cross experiment was performed to study the genetic relationship of grain yield and some agronomic traits in rice. analysis of variance showed significant differences among genotypes for all traits. results of correlation analysis showed that rice grain yield was positively and significantly correlated with by (rp = 0.81, rg =0.55), hi (rp =0.35, rg =0.79), np (rp = 0.80,...
Application of selection index for screening desired plants based on complex quantitative traits can be more effective than direct selection. This study was conducted using an F2 rice population consisting of 87 plants derived from a cross between two cultivars Gharib and IR28. The purpose was to establish suitable selection indices for increasing yield and its related traits in research farm...
The development of ‘scientific’ breeding methodologies in the first half of the 20 Century was based partly on the application of genetic theory following the rediscovery of Mendel’s Laws, but mostly on developing procedures for systematic phenotypic selection. Although, new technologies in tissue culture, pathology, statistics and quantitative genetics contributed to advances in the second hal...
Simplifying the selection procedure to improve yield of new genotypes of rice is necessary. in order to evaluate relationship among grain yield and other agronomic traits, an experiment was conducted in agricultural and natural resoures research center in 2015-2016 year. In present study, 10 rice genotypes were studied in randomized complete blocks design with three replications. Grain yield al...
Bacterial blight (BB) disease caused by Xanthomonas oryzae pv. is a major biotic constraint on obtaining higher grain yields in rice. Marker-assisted backcross breeding (MABB) was performed the pyramiding of Xa4, xa5, xa13 and Xa21 resistance genes popular variety, Ranidhan. A foreground selection BC1F1, BC2F1, BC3F1 progenies detected all target 12, 7 16 using closely linked markers from popul...
Food resources of the modern world are strained due to the increasing population. There is an urgent need for innovative methods and approaches to augment food production. Legume seeds are major resources of human food and animal feed with their unique nutrient compositions including oil, protein, carbohydrates, and other beneficial nutrients. Recent advances in next-generation sequencing (NGS)...
Hybrid zones contain extensive standing genetic variation that facilitates rapid responses to selection. The Picea glauca × Picea engelmannii hybrid zone in western Canada is the focus of tree breeding programs that annually produce ~90 million reforestation seedlings. Understanding the direct and indirect effects of selective breeding on adaptive variation is necessary to implement assisted ge...
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