Estimation of Heritability, Genetic Advance and Correlation in Bread Wheat (Triticum aesitvum L.) under Heat Stress Condition
Jayant Kumar *
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (Uttar Pradesh) 208002, India.
Vijay Kumar Yadav
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (Uttar Pradesh) 208002, India.
R. K. Yadav
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (Uttar Pradesh) 208002, India.
Som Veer Singh
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (Uttar Pradesh) 208002, India.
C.L. Maurya
Department of Seed Science and Technology, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (Uttar Pradesh) 208002, India.
Ankitesh kumar
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (Uttar Pradesh) 208002, India.
*Author to whom correspondence should be addressed.
Abstract
The current study was conducted on several genotypes during crop season of Rabi 2021-2022 and 2022-2023 with the goal of to work out heritability in general and genetic advance in percentage of mean and estimate correlation coefficient among the growth and yield traits. The field experiments included 60 germplasms of bread wheat. Experimental trials were conducted in 12 environments (E1 to E12). The field experiments were laid out in Augmented Block Design (ABD). The observations on 26 physio-morphological and yield related traits were recorded in both non-stressed and heat-stressed environment. High genotypic and phenotypic coefficients of variation were observed for plant waxiness (8.897 and 11.943) followed by leaf rolling (6.390 and 12.240). Heritability coupled with genetic advance were identified in yield per plot (g), grain yield / plant (g), plant waxiness (0-10 scale). Grain yield per plant exhibited significant positive correlation with grain length (0.712), harvest index (0.629), leaf rolling (0.4638). It exhibited significant negative correlation with plant height (-0.461) and canopy temperature depression (-0.233).
Keywords: Bread wheat genotypic correlation, phenotypic correlation, quantitative trait