Genetic Variability and Divergence Studies for Yield and its related traits in Rice (Oryza sativa L.)

Author: S.K. Singh, Manoj Kumar S.C., Mounika Korada*, Amrutlal Khaire, Prasanta Kumar Majhi, D.K. Singh and Jayasudha S.

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Abstract

The amount of genetic variability present in crop germplasm and the knowledge of its nature and magnitude is very important before starting any crop improvement program. In this view, fifty-five rice genotypes were evaluated for studying the genetic parameters (genetic variability, heritability and genetic advance as percent of mean) and genetic divergence for yield contributing characters at three different locations in Eastern Uttar Pradesh, India. The study was conducted during Kharif 2020 using Alpha lattice design. The data were collected on 15 quantitative traits. The combined ANOVA revealed the presence of significant variability in experimental material for all the traits under study across all three locations. High GCV and PCV were recorded for traits like grain yield per plot, biomass and grain yield per hectare. High heritability with high genetic advance as percent of mean was reported for plant height, number of productive tillers per plant, filled grains per panicle, grai

Keywords

Genetic Divergence, Heritability, Mahalanobis’ D2, Rice, Variability.