Correlation, Heritability and Genetic Advance Studies for Yield and Quality Traits in Rice (Oryza sativa L.)
M. Teja Sri *
Department of Genetics and Plant Breeding, Agricultural College, Jagtial, PJTAU, Telangana, India.
B. Srinivas
Regional Agricultural Research Station, Polasa, PJTAU, Telangana, India.
P. Madhukar
Regional Agricultural Research Station, Polasa, PJTAU, Telangana, India.
Y. Hari
Regional Agricultural Research Station, Warangal, PJTAU, Telangana, India.
*Author to whom correspondence should be addressed.
Abstract
This study was conducted with 43 genotypes to study the variability and correlation for fourteen traits at Regional Agricultural Research Station, PJTAU, Polasa, Jagtial, Telangana during the Kharif, 2024. Significant genetic variability was recorded for all the traits studied. Grain yield, number of grains per panicle and 1000 grain weight showed the highest genotypic and phenotypic coefficients of variation. High heritability along with high genetic advance as percent of mean was observed for 1000 grain weight, head rice recovery and grain yield per plant suggesting these traits are suitable for effective selection for further improvement. Correlation analysis showed positive and significant associations of plant height, panicle length, number of grains per panicle, kernel breadth, hulling percentage and milling percentage with grain yield. Path coefficient analysis at the genotypic level indicated that panicle length, number of grains per panicle, kernel breadth and milling percentage had positive direct effects on grain yield. These findings offer useful information for developing effective breeding strategies by highlighting the direct and indirect roles of key traits in improving yield.
Keywords: Variability, heritability, genetic advance, correlation, path analysis