Evaluation of Genetic variability, Heritability and Genetic Advance for Grain Yield components in Rice (Oryza sativa L (original) (raw)

Abstract

Higher grain yield/production is the primary requirement to feed the fast growing population in the world, and the improvement of any trait mainly depends on magnitude of genetic variability present in base population. In this regard present investigation consists of 25 rice varieties and the experiment was conducted during Kharif 2020 and 2021 in Randomized Block Design with three replications. The data were recorded for 7 quantitative characters to study genetic variability, heritability, genetic advance and varieties performance. On the basis of mean performance, high seed yield per plant were exhibited by the varieties NDR-8002, CR Sugandha dhan-908, HUR-105, CR Sugandha dhan-910 and HUR-3022. Analysis of variance among 25 varieties showed significant difference for all characters studied. Highest genotypic coefficient of variation (GCV) & phenotypic coefficient variation (PCV) was observed for seed yield per plant that these characters could be used as selection for crop improvement. High evaluation of heritability was observed for traits days to 50% flowering, Plant height (cm), Number of tillers/plant, Panicle length (cm), Number of grains/panicle, Test weight (g) and yield/plant. High genetic advance were observed for number of traits days to 50% flowering, Plant height (cm), Number of tillers/plant, Panicle length (cm), Number of grains/panicle, Test weight (g) and yield/plant indicating predominance of additive gene effects and possibilities of effective selection for the improvement of these characters.

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