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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 3
First page : (236) Last page : (240)
Article doi: : http://dx.doi.org/10.18782/2582-2845.7983

Correlation Coefficient and Path Coefficient Analysis in Cowpea (Vigna unguiculata (L.) Walp.)

Bamji Rukhsar C.¹, Pithia M. S.² and Lata Raval^3*
1Department of Genetics and Plant Breeding, JAU, Junagadh, Gujarat
²Research Scientist (Chickpea), Pulses Research Station, JAU, Junagadh, Gujarat
³Associate Research Scientist, Dept. of Genetics and Plant Breeding, JAU, Junagadh, Gujarat
*Corresponding Author E-mail: lataraval@jau.in
Received: 1.02.2020  |  Revised: 7.03.2020   |  Accepted: 11.03.2020 

 ABSTRACT

Forty two genotypes of cowpea were evaluated in a Randomized Block Design with three replications to study association of component traits and path coefficient analysis. Correlation coefficient analysis revealed that comparatively higher degree of genotypic correlation coefficients than their phenotypic correlation coefficients in most of the characters. The characters like number of clusters per plant, number of pods per cluster, number of pods per plant and number of seeds per pod showed highly significant positive correlation with seed yield per plant. Negative significant correlation was observed by days to 50 per cent flowering and days to maturity towards seed yield per plant. Path coefficient studies revealed that very high positive direct effect on seed yield per plant was revealed by number of pods per plant at both genotypic and phenotypic levels. High positive direct effect was revealed by number of primary branches per plant and number of seeds per pod at genotypic level and by pod length at phenotypic level towards seed yield per plant. Number of primary branches per plant, number of clusters per plant, number of pods per cluster and number of seeds per pod positively and indirectly contributed via number of pods per plant at both genotypic and phenotypic levels towards seed yield per plant. Therefore, plant breeder should focus his attention on above said characters in cowpea improvement programme.

Keywords: Cowpea, Correlation, Path analysis

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

Cite this article: Rukhsar, B.C., Pithia, M.S., & Raval, L. (2020). Correlation Coefficient and Path Coefficient Analysis in Cowpea (Vigna unguiculata (L.) Walp.), Ind. J. Pure App. Biosci. 8(3), 236-240. doi: http://dx.doi.org/10.18782/2582-2845.7983