International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 2
First page : (595) Last page : (603)
Article doi: http://dx.doi.org/10.18782/2320-7051.2921
Heritability, Correlation and Path Coefficient Analysis for Determining Interrelationships among Grain Yield and Related Characters in Maize (Zea mays L.)
Yogesh Pandey*, R. P. Vyas, Jaydev Kumar, Lokendra Singh, H. C. Singh, P. C. Yadav and Vishwanath
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur 208002, U.P., India
*Corresponding Author E-mail: yogeshpande79@gmail.com
Received: 16.04.2017 | Revised: 27.04.2017 | Accepted: 28.04.2017
ABSTRACT
Knowledge of interrelationships between grain yield and its contributing components will improve the efficiency of breeding programs through the use of appropriate selection indices. The objective of this study was to evaluate of interrelationships among grain yield and related Characters in 45 F1 corn hybrids. The hybrids were evaluated in randomized complete block design with three replications. The genetic parameters studied among the traits included the mean performance, genotypic variances, phenotypic variances, genotype by environment variances, broad sense heritability, phenotypic and genotypic correlation coefficients and path analysis. Significant differences were recorded for all traits studied thereby revealing the diversity of the maize genotypes. Grain yield per plant, shelling%, and 100seed weight (g) showed high heritability had high genotypic variances suggesting the involvement of additive gene action. Days to 50% tasseling, days to 50% silking and physiological maturity showed the highest heritability but low genotypic variance suggesting the preponderance of non-additive gene action. The grain yield was positively and strongly correlated with 100seed weight, shelling%, cob length, plant height, kernels per row and kernel rows per cob. Path analysis was used to partition the genetic correlations between grain yield and related characters. Days to 50% silking, physiological maturity, shelling% and 100-seed weight showed positive direct effect on grain yield. The highest direct effect belonged to days to 50% silking the highest direct effect (0.3032), followed by physiological yield (0.1586).
Key words: Maize, Heritability, Correlation coefficient, Path coefficient analysis and Grain Yield
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Pandey, Y., Vyas, R.P., Kumar, J., Singh, L., Singh, H.C., Yadav, P.C. and Vishwanath, Heritability, Correlation and Path Coefficient Analysis for Determining Interrelationships among Grain Yield and Related Characters in Maize (Zea mays L.), Int. J. Pure App. Biosci.5(2): 595-603 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2921
