Genetic Variability Parameters for Yield and Related Traits in Rice (Oryza sativa L.) under Irrigated Normal and Drought Stress Condition

Abstract

Identification and variability estimation of rice genotypes based on drought tolerant attributes is one of pivotal exploration work in the changing environmental situation with occurrence of drought has become more often. BCKV-Regional Research Station (Red & Laterite zone) Jhargram, was the area where the work was carried out, wherein thirty-eight rice genotypes were evaluated with checks under drought stress and normal condition. ANOVA revealed significant differences between the various genotypes regarding the traits under consideration, under the two screening environments. High variability along with maximum broad sense heritability were present for the characters namely leaf proline content, relative water content, recovery percentage and no. of grains per panicle. Indices related to drought stress resilience, root length, root shoot ratio and grain yield per plant in normal & stress condition also exhibited high heritability and genetic advance These traits may offer a basis for direct selection of genotypes for drought prone areas.