Genetic Diversity analysis in Indian Bean (Dolichos lablab L.)

Fifty genotypes were evaluated in RBD with 3 replications. The observations were recorded on 12 characters. ANOVA revealed significant differences among the genotypes for all characters. A wide range of variation was observed for seed yield per plant and important yield components. High GCV, heritability along with high GA as percentage of mean was observed for number of clusters per plant, seed yield per plant, and number of pods per plant which indicated additive gene action for these traits. The analysis of correlation coefficients suggested that the magnitude of genotypic correlations were higher than the corresponding phenotypic correlations. Seed yield per plant was found to be highly significant and positively correlated with days to 50% flowering, number of clusters per plant, number of pods per plant and days to maturity at phenotypic level.Path analysis revealed the number of clusters per plant, number of pods per cluster, number of branches per plant and pod length exhibited high and positive direct effects on seed yield per plant. D2-statistics grouped 50 genotypes into five clusters. The clustering pattern of the genotypes did not confirm the geographical distribution.