Analysis of genetic variability (PCV, GCV, heritability and genetic advancement) among thirteen different rice genotypes in north India

The analysis of genetic variability was done for 13 rice genotypes in the student instructional farm during Kharif 2014-15 at Narendra Dev University of Agriculture and Technology, Kumarganj, Faizabad. The experiment was conducted in a randomized block design (RBD) with 3 replications. In general, phenotypic coefficients of variation (PCV) estimates were higher than genotypic coefficients of variation (GCV) estimates for all the studied characters in all genotypes displaying the influence of environment effect on the studied characters. The higher estimates of PCV and GCV were observed for grains per panicle, spikelet’s per panicle and flag leaf area. High heritability coupled with high genetic advance was observed for spikelet’s per panicle, grains per panicle, flag leaf area, test weight and plant height, indicate the lesser influence of environment in expression of these traits and prevalence of additive gene action in their inheritance hence, amenable of simple selection.