International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (1389) Last page : (1395)
Article doi: http://dx.doi.org/10.18782/2320-7051.5388
Genetic Variability, Correlation and Path Analysis Studies in Early Segregating Generation of Cowpea [Vigna unguiculata (L.) Walp]
Dinesh, H. B., Viswanatha, K.P., Lohithaswa, H. C. Pavan, R. and Poonam Singh
Department of Genetics and Plant Breeding,
University of Agricultural Sciences, GKVK, Bangalore 560 065, India
*Corresponding Author E-mail: dineshhb@rediffmail.com
Received: 5.08.2017 | Revised: 10.09.2017 | Accepted: 14.09.2017
ABSTRACT
Cowpea [Vigna unguiculata (L.) Walp] is grown as one of the most important multipurpose grain legume extensively cultivated in arid, semi-arid and subtropics. Two genetically diverse parents (C-152 × V-57817) were crossed and advanced to F3 generation. The magnitude of variation, heritability, genetic advance, association of component characters and path co efficient analysis were estimated in a set of 200 F3 progenies. Grain yield is complex and is determined by several component traits. The traits having high heritability and significant positive correlation with the grain yield can be utilized for indirect selection for genetic improvement. A high phenotypic coefficient of variation (PCV) and moderate genotypic coefficient of variation (GCV) estimates were recorded for plant height (20.48 % and 19.50 %) and number pods per plant (20.80% and 17.41%). High heritability coupled with high genetic advance as per cent of mean (GAM) was observed for plant height (90.66% and 38.25%) and number of pods per plant (70.06% and 30.02%). Path coefficient analysis in F3 segregating population revealed that seed yield was primarily influenced by number of pods per plant and 100 seed weight which had maximum direct effect on seed yield per plant. Results suggests that traits like number pods per plant and 100 seeds weight could be used as selection criteria for grain yield improvement in segregating populations of cowpea.
Key words: Cowpea, PCV, GCV, Heritability, Genetic advance
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Dinesh, H.B., Viswanatha, K.P., Lohithaswa, H.C., Pavan, R. and Singh, P., Genetic variability, correlation and path analysis studies in early segregating generation of cowpea [Vigna unguiculata (L.) Walp], Int. J. Pure App. Biosci.5(5): 1389-1395 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5388
