Genetic variability, heritability and genetic advance studies in vegetable cowpea [Vigna unguiculata (L.) Walp.]
Sixty diverse genotypes of vegetable cowpea were evaluated during summer 2013 for genetic parameters viz., genetic variability, heritability and genetic advance. Analysis of variance revealed significant differences among the genotypes for all the 12 characters studied. The highest range of variation was observed for green pod yield per plant followed by ten pod weight, number of pods per plant and plant height. The estimates of genotypic (GCV) and phenotypic (PCV) coefficients of variation indicated that the values of PCV were higher than GCV for all the traits. The estimates of PCV and GCV were high for green pod yield per plant followed by number of pods per plant, ten pod weight, hundred fresh seed weight, plant height, number of pods per cluster, number of primary branches per plant. High heritability along with high genetic advance was observed for number of pods per plant, ten pod weight and hundred fresh seed weight indicating that these traits were mainly governed by additive gene action and responsive for further improvement of these traits.
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