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Phenotypic evaluation of recombinant inbred lines of mungbean [vigna radiata (L.) wilczek] for micronutrients and yield traits

KrishiKosh

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Title Phenotypic evaluation of recombinant inbred lines of mungbean [vigna radiata (L.) wilczek] for micronutrients and yield traits
 
Creator Kritika
 
Contributor Yadav, Rajesh
 
Subject Animal products, Animal developmental stages, Biological phenomena, Proteins, Chlorophylls, Yields, Silk, Sericulture, Productivity, Planting
 
Description Seventy mungbean [Vigna radiata (L.) Wilczek] recombinant inbred lines (RILs) developed from a cross between ML 776 (high Zn and Fe content) and MH 2-15 (high yield and MYMV resistant) were used to study the genetic variability, correlations and genetic divergence. Significant variability among the genotypes for all the characters i.e. days to flowering and maturity, plant height, number of branches per plant, number of pods per plant, number of seeds per pod, 100-seed weight, seed and biological yield per plot, reaction to MYMV, zinc and iron content in seeds except harvest index was observed. High GCV corresponding heritability and genetic advance for number of branches per plant, seed and biological yield per plot, reaction to MYMV, zinc and iron content in seeds suggested that these characters are controlled by additive gene action and can be improved through selection. Low GCV coupled with low heritability and genetic advance was observed for number of seeds per pod and harvest index indicating presence of non-additive gene action and high GxE interaction. Positive association of seed yield was found with plant height, number of branches per plant, number of pods per plant, number of seeds per pod, 100-seed weight, biological yield and harvest index and negative with days to flowering, days to maturity and MYMV reaction. Eight clusters containing one to 30 and three to 23 genotypes under untreated and treated environments, respectively were formed using hierarchical cluster analysis. Inter-cluster distance was observed maximum between clusters VII and VIII in both the environments. Therefore, genotypes belonging to cluster VII and VIII may be used in hybridization programme to obtain the desired transgressive segregants. Among the 70 RILs, about 43 % responded positively to zinc, 71 % to iron and 29 % to both Zn and Fe application. RILs having high zinc and iron contents responded less to their application as compared to those having low to moderate zinc and iron content. In this study, RIL-1, RIL-11, RIL-37, RIL-59, RIL-61 and RIL-70 were found to have significantly high zinc content, RIL-1, RIL-3, RIL-7, RIL-37 and RIL-38 had significantly high iron content and RIL-25, RIL-54, RIL-58, RIL-60 and RIL-67 had high seed yield which can be utilized to develop mungbean varieties with a combination of high yield and micronutrients (Zn and Fe) content.
 
Date 2016-10-25T13:55:37Z
2016-10-25T13:55:37Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81834
 
Language en
 
Format application/pdf
 
Publisher CCSHAU