Genetic variability in cowpea [ Vigna unguiculata (L.) Walp.] Germplasm lines

The present investigation was carried out on 30 genotypes to study genetic parameters for ten characters. The estimates of genotypic parameters revealed that differences between the estimates of GCV and PCV were found least for most of the characters. Higher estimates of GCV and PCV were observed for plant height, primary branches per plant, seed yield per plant and test weight. Maximum heritability and maximum genetic gain was found for test weight followed by plant height, primary branches per plant, seed yield per plant and harvest index. These characters are governed by additive gene action and one should go for direct selection for these traits to improve in future.