Comparative delineation of genetic variability and association among yield and its contributing traits under sodic and normal soil conditions in rice (Oryza sativa L.)
Genetic variability parameters were estimated in 150 diverse rice genotypes comprising landraces, improved varieties and Harvestplus lines at two environments viz., sodic and normal irrigated environments using Augmented Complete Block Design. The analysis of variance revealed significant differences among the test genotypes for all the traits. The analysis of mean performance of genotypes identified three genotypes outperformed all the check genotypes under sodicity conditions. The estimates of PCV, GCV, heritability and genetic advance as percent of mean inferred that most of the traits were governed by additive gene action and have good response to selection in both the environments. It was found that PCV and GCV had increased considerably for most of the traits under sodicity compared to normal irrigated environment. Correlation and path analysis revealed that the traits, number of productive tillers, panicle length, number of filled grains per panicle, panicle weight and hundred grain weight possessed high correlation and high direct effect on single plant yield indicating the importance of yield improvement through these traits.
Keywords: Germplasm, variability, correlation, path analysis
Comparative delineation of genetic variability and association among yield and its contributing traits under sodic and normal soil conditions in rice Oryza sativa L.. 2023. Electronic Journal of Plant Breeding, 14 2, 591-600. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4777
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