Assessment of Genetic Parameters of Rice (Oryza sativa L.) Genotypes under Late Kharif Condition in Hyderabad-Karnataka Region

Abstract

Genetic diversity within crop germplasm forms the foundation of plant breeding and crop improvement programs. A broad genetic base enhances the probability of identifying genotypes with superior adaptability, stress tolerance, and yield potential. The present study was carried out at Agriculture Research Station, Gangavati during late kharif 2020 to assess variability for yield and its components among 120 rice genotypes maintained at All India Coordinated Rice Improvement Programme, Agriculture Research Station, Gangavathi. ANOVA revealed significant difference for all the characters except panicle length, kernel length and length/breadth ratio. High phenotypic and genetic coefficient of variance was exhibited by plant height, total number of tillers per hill, number of productive tillers per hill, flag leaf length, panicle weight, test weight, total number of spikelets per panicle, number of filled grains per panicle, kernel breadth and yield per plant. High heritability coupled with genetic advance per cent mean was observed for plant height, total number of tillers per hill, number of productive tillers per hill, flag leaf length, panicle weight, test weight, total number of spikelets per panicle, number of filled grains per panicle, panicle fertility, kernel length, kernel breadth, length/breadth ratio and yield per plant.