Studies on genetic variability, heritability and character association in dolichos bean (Lablab purpureus)

The present studies on genetic variability, heritability and character association in Dolichos bean (Lablab purpureus) were carried out at vegetable research farm, Department of Horticulture, Allahabad School of Agriculture, SHIATS, Allahabad. The experiment having 20 genotypes was laid out in simple RBD with three replications. It was observed that PUSA SEM-3 genotype was found superior in terms of pod yield per plant (2.319 kg). The phenotypic coefficient of variation (PCV) was higher than GCV for all the traits. Heritability in broad sense was noticed high for all the traits except days to germination. Higher genetic advance was observed for plant height, and high genetic advance as per cent of mean was found in pod yield per plant. The traits like plant height, number of primary branches per plant, number of inflorescence per plant, number of flowers per inflorescence, number of pods per inflorescence, number of pods per plant, number of seeds per pod, pod length, pod width and pod weight showed positive significant correlation with pod yield per plant at both genotypic and phenotypic levels. Number of pods per plant exhibited the highest positive direct effect on yield at both genotypic and phenotypic path level.