Potential for drought tolerance in greengram

Abstract

A research programme was carried out at the Department of Plant Breeding, College of Agriculture, Vellayani, during October to December, 1988 with an objective of evaluating the potential for drought tolerance in greengram through esimation of genetic variability, correlation of yield with component characters and the direct and indirect effects of different components on yield. Twenty varieties of greengram were evaluated under open conditions without any irrigation adopting a randomized block design replicated thrice. Data on twenty characters were recorded and subjected to analysis of varience and covariance. The genotypic and phenotypic coefficient of variation, heritability in the broad sense, genetic advance and genotypic and phenotypic correlations were estimated. Path analysis was conducted with yield per plant as the effect and seven component characters as the cause.