Study of Genetic Variability Parameters in F3 Generation of Interspecific Hybrids in Cowpea [Vigna spp.]

Author: Sudhamani Kalluru*, S.S. Desai,V. V. Dalvi, A. V. Mane and U.B. Pethe

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Abstract

A cross has been made between grain-type cowpea (Vigna unguiculata ssp. unguiculata) and yard long bean (Vigna unguiculata ssp. sesquipedalis) and the obtained fifteen families each having three progenies along with two check varieties were subjected to variability studies. Analysis of variance revealed significant variation between families and within the progeny for all the twelve characters, justifying the selection of genotypes for the study. Plant height showed a higher estimate of phenotypic and genotypic variance. The phenotypic coefficient of variation (PCV) was higher in magnitude over the respective genotypic coefficient of variation (GCV) for all the characters under study. The estimates of PCV and GCV were high for plant height, pod length, number of pods per plant and hundred seed weight. High heritability coupled with genetic advance as percent of mean (GAM) was observed for characters plant height, pod length, number of pods per plant, hundred seed weight, seed yield per

Keywords

Cowpea, Inter-specific Hybrids, Families, GAM, Heritability, PCV, GCV Progenies.

Conclusion

It is concluded that a wide range of variability exists among the families and within the progeny of the same family for all the characters under study. PCV was higher in magnitude over respective GCV. High heritability with high genetic advance as percentage of mean was observed for plant height, pod length, number of pods per plant, hundred seed weight, seed yield per plant, number of clusters per plant, number of branches per plant, number of seeds per pod and number of pods per cluster. Seed yield per plant showed positive and high significant correlation with harvest index, number of pods per plant, number of branches per plant, number of pods per cluster, hundred seed weight, pod length, number of clusters per plant and number of seeds per pod at both genotypic and phenotypic level. These characters should be used as selection criteria for genetic improvement of seed yield per plant in the cowpea population under study.

References

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How to cite this article

Sudhamani Kalluru, S.S. Desai,V. V. Dalvi, A. V. Mane and U.B. Pethe (2022). Study of Genetic Variability Parameters in F3 Generation of Interspecific Hybrids in Cowpea [Vigna spp.]. Biological Forum – An International Journal, 14(1): 1444-1450.