Variability, correlation and path analysis study in vegetable Indian bean [Lablab purpureus (L.) Sweet].

摘要

Forty vegetable Indian bean genotypes were studied to estimate the variability, correlation and path analysis. A wide range of variation was apparent for all the characters among which the number of pods per plant had highest. Green pod yield per plant varied highest from 68.74 to 452.07 g indicating the presence of high yielding genotypes. The genotypic coefficient of variation, heritability and genetic advance were observed higher for the characters viz., green pod yield per plant, number of pods per cluster, number of pods per plant and 100-fresh seed weight. Green pod yield was highly significantly and positively correlated with number of branches per plant, number of pods per cluster, number of pods per plant at both the genotypic and phenotypic levels. Path coefficient analysis indicated the high positive direct effect for number of pods per plant followed by number of seeds per pod and number of days to last picking. The character pod length exhibited high negative direct effect on green pod yield per plant followed by days to 50% flowering, plant height and days to first picking.