Journal ID : AMA-11-12-2023-12770
[This article belongs to Volume - 54, Issue - 12]
Total View : 439

Title : Genetic variability and diversity in vegetable cowpea (Vigna unguiculata)

Abstract :

The experiment was conducted to evaluate 50 genotypes of vegetable cowpea to know the magnitude of genetic variability, heritability, genetic advance and genetic divergence. Phenotypic observations were meticulously recorded for days to 50 per cent flowering, days to first green pod picking, number of primary branches per plant, plant height (cm), pod length (cm), pod width (cm), number of pods per plant, number of seeds per pod, number of pods per cluster, number of clusters per plant, ten pod weight (g) and green pod yield per plant (g). The magnitude of PCV was slightly greater than GCV which revealed that very little influence of environmental variation was observed on all the characters and stated that a sufficient amount of variability was noticed. The high genotypic coefficient of variation and phenotypic coefficient of variation was observed for plant height, green pod yield per plant, ten pod weight and number of pods per plant. For pod length, number of seeds per pod, plant height, ten pod weight, green pod yield per plant, number of primary branches per plant, number of pods per plant, number of clusters per plant, and number of pods per cluster, estimates of high heritability along with high genetic advance expressed as a percent of mean were noted. Utilizing a cluster analysis, the fifty genotypes were categorized into six distinct clusters. The maximum inter-cluster distance was found between clusters IV and VI. In this context, genotypes from cluster IV and VI should be selected as parents in hybridization programme as they showed highest genetic diversity.

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