International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 1
First page : (954) Last page : (958)
Article doi: http://dx.doi.org/10.18782/2320-7051.5778

Study of Genetic Variability Parameters in F2 Generation of Interspecific Hybrids in Cowpea

Krishnaja R. Nair*, Desai S. S, Sawardekar S. V and Burondkar M. M
Department of Agricultural Botany, College of Agriculture, DBSKKV, Dapoli
*Corresponding Author E-mail: krishnaja1993@gmail.com
Received: 24.09.2018  |  Revised: 20.10.2018   |  Accepted: 28.10.2018  

 ABSTRACT

A genetic variability study is carried out with 25 F2 interspecific hybrids of cowpea and their fourteen parents and analysis of variance revealed significant differences among the segregants tested for all the fourteen characters, justifying the selection of genotypes for the study. The genotypes exhibits considerable amount of genetic variation for all the characters and it indicated the good scope for selection of suitable basic material for further improvement.Phenotypic coefficient of variation (PCV) was greater in magnitude over respective genotypic coefficient of variation (GCV) for all the character under study. The estimate of PCV and GCV were high for plant height and green pod yield per plant. High heritability and genetic advance as percent of mean (GAM) was observed for plant height, green pod yield per plant, seed yield per plant, pod length and number of pods per plant. These characters are governed by additive gene action and these characters should go for direct selection for development of better generations in future.

Key words: cowpea, Interspecific hybrid, Variability, Heritability, Genetic advance

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Nair, K.R., Desai, S.S, Sawardekar, S.V. and Burondkar, M.M., Study of Genetic Variability Parameters in F2 Generation of Interspecific Hybrids in Cowpea, Int. J. Pure App. Biosci.6(1): 954-958 (2018). doi: DOI: http://dx.doi.org/10.18782/2320-7051.5778