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Department of Genetics and Plant Breeding, S.V. Agricultural College, ANGRAU, Tirupati-517 502.
In this investigation genetic variability, heritability and genetic advance was studied in 39 indigenous landraces of rice along
with two checks for evaluation of yield and quality traits during kharif, 2021. Variance studies showed significant variations among all the indigenous landraces of rice for all the yield and quality traits, suggesting presence of significant amount of variance. Total grain panicle-1, number of filled grains panicles-1, number of chaffy grains plant-1 grain yield plant-1, test weight, grain size, alkali spreading value and gel consistency showed high values of GCV and PCV. This indicates that considering these traits for direct selection will result in genetic improvement. The yield and quality traits which showed high estimates for genetic advance as % of mean along with high heritability were gel consistency, chaffy grain panicle-1, total grain panicle-1, filled grain panicle-1, Kernel length after cooking (mm), alkali spreading value, protein (ppm), kernel breadth after cooking (mm), grain size (mm), grain length (mm), amylose content, grain breadth (mm), plant height (cm), grain yield plant-1 and test weight (g). This implied that additive gene activity influenced the inheritance of these traits, thus providing scope for further improvement through selection.
KEYWORDS: Genetic variability, heritability, genetic advance, indigenous landraces.