Genetic variability and character association study in dolichos bean

Abstract

Twenty four dolichos bean genotypes from different parts of India were evaluated for ten quantitative traits in Andaman Islands. Moderate to low genotypic and phenotypic coefficients of variation were recorded for all the traits. High heritability (70.97%) and high genetic advance (74.96%) were observed for plant height, while high heritability (64.24%) but low genetic advance (2.58%) were recorded for pod length. Pod length (r = 0.611), number of seeds per pod (r = 0.764), number of pods per plant (r = 1.00) and pod yield per plant (r = 1.00) had positive and significant correlation with pod yield. Path coefficient analysis revealed maximum direct effect of days to 50% flowering, pod width, number of pods per plant and pod yield per plant on pod yield indicating traits of importance for yield improvement.