A STUDY ON GENETIC VARIABILITY, CORRELATION AND PATH ANALYSIS IN PIGEON PEA [Cajanus cajan L. MILLSPAUGH]

KESHA RAM¹, KANAK SAXENA²*, TUSHAR M. SHRIMALI³, GEETA BISNOI^4
1Department of Plant breeding and Genetics, Centre of Excellence for Research on Pulses (CERP), Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat
²Department of Plant breeding and Genetics, Centre of Excellence for Research on Pulses (CERP), Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat
³Department of Plant breeding and Genetics, Centre of Excellence for Research on Pulses (CERP), Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat
⁴Department of Plant breeding and Genetics, Centre of Excellence for Research on Pulses (CERP), Sardarkrushinagar Dantiwada Agricultural University, Sardarkrushinagar, 385506, Gujarat
* Corresponding Author : kanak.saxena27@gmail.com

Received : 19-07-2016     Accepted : 04-08-2016     Published : 27-10-2016
Volume : 8     Issue : 51       Pages : 2287 - 2289
Int J Agr Sci 8.51 (2016):2287-2289

Keywords : Genetic variability, Correlation and Path coefficient, Pigeon pea
Academic Editor : P. T. Patel
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

Thirty varieties of pigeon pea were evaluated and a wide range of variation was found for almost all the traits under study. The phenotypic and genotypic variances, correlation and path coefficient, heritability and genetic advances were estimated for grain yield and yield traits in 30 pigeon pea genotypes. The highest GCV was recorded for number of secondary branches/plant followed by pods/plant. Heritability in broad sense ranged from 60.31 (seeds/pod) to 96.28 (days to 50% flowering). High genetic advance were observed for number of primary branches/plant indicating the prevalence of additive gene action for inheritance of these traits. Correlation and Path coefficient analysis (genotypic and phenotypic) revealed that pods/plant, 100 -seed weight, days to 50% flowering, primary branches and secondary branches had maximum direct effect resulted significantly positive correlation with grain yield/plant. These traits can be used to improve the grain yield of pigeon pea.