Abstract
Genetic analyses of seedling vigor and important agronomic traits were studied in the laboratory and field at the Experimental Farm of Rice Research and Training Center (RRTC) during 2019 and 2020 to find suitable rice genotypes having greater early vigor. Seedling vigor, genotypes performance, phenotypic and genotypic coefficient of variability, heritability in the broad sense, genetic advance, and correlation coefficients were estimated from the lab and field trial results. Genetic relationships based on quantitative characteristics among varieties were also investigated. The results showed that Pusa Basmati, IR77510-68-1-3-3, and IR80732-34-2-1-2 gave the heights values of grain length. As for root seedling length (cm), eight genotypes namely; Hassawi 1, YashiroMochi, IR80732-34-2-1-2, IR 77510-68-1-3-3, Hassawi2, BG35-1, Improved Sabramati, Improved Sabramati, Pusa Basmati, Koshihikiari gave the highest value. For duration and grain yield per plant, the genotypes Hexi 12 and IR80732-34-2-1-2 were found to be short duration and high yielding. However, the phenotypic coefficient of variability was higher than the genotypic coefficient of variability under different years in all genotypes for all traits. Also, high estimates of heritability were found for all characteristics under investigation at different years, which ascertained the presence of both additive and non-additive genetic variance in the inheritance of most evaluated traits.