Genetic variability and correlation studies on seed yield and yield components in advanced breeding lines of mungbean [Vigna radiata (L.) Wilczek.]

The present investigation was undertaken to evaluate eighteen diverse mungbean [Vigna radiata (L.) Wilkeezek] advanced breeding lines developed at AICRP on MULLaRP for the estimation of genetic variability, heritability and genetic advance, correlation coefficient for eleven quantitative traits and their association level with seed yield. The genotypes differed significantly for all characters under study. High genotypic and phenotypic coefficient of variation was observed for seed yield, number of pods per plant, branches per plant and clusters per plant. Association analysis indicated that, number of branches per plant, number of clusters per plant, number of pods per plant and chlorophyll content had positive correlation with seed yield. Maximum direct effect on seed yield was observed through number of branches per plant, the number of clusters per plant and dry matter. From the present findings it could be suggested that on the basis of genetic parameter correlation and path analysis, number of branches per plant, number of clusters per plant and number of pods per plant should be given topmost priority while formulating a selection strategy for improvement in seed yield of mungbean.