Studies on Combining Ability and Genetic Advance in Blackgram (Vigna mungo L. Hepper) Under Rainfed Condition
Combining ability analysis was worked out for seed yield and it s contributing characters from Line ×Tester mating design using fourteen lines and three testers of blackgram. Observations were recorded on thirteen traits including seed yield. S ignificant variability of lines, parents vs crosses and line × tester effect was observed for number of clusters and pods per plant, seed yield and test weight. Significant variability for combining ability of crosses and line × tester effect was recorded with number of clusters and pods/plant, seeds/pods, number of seeds/plant, t otal biomass, seed yield and test weight. Number of seeds/plant and number of pods/plant recorded high genetic advance while days to 50% flowering, total number of branches and plant height recorded high heritability (narrow sense). Highly significant GCA for seed yield was observed in two lines IC587753 and IC436720 and these lines also recorded significant GCA for number of pods and seeds/plant. Among the three testers selected significant GCA for seed yield was observed with LBG - 20 and this genotype als o recorded significant GCA for total number of branches total biomass and test weight. The crosses IC436519 × T - 9, IC587752 × T - 9, IC436720 × PU - 19 and IC398971 × PU - 19 recorded significant SCA for seed yield and these crosses can be used for recurrent sel ection breeding method for improvement of seed yield.
G Vijay Kumar, M Vanaja *, P Raghu Ram Reddy, K Salini, Babu Abraham, and N Jy othi Lakshmi