Vol. 18 No. 2
Variability assessment of rice genotypes by yield traits in diverse environments of Himachal Pradesh
Author(s): A. DWIVEDI, S. SANADYA, A. SOHARU, P. P. KUMAR AND D. BASANDRAI
Abstract: Thirty rice germplasms were grown in randomized block design at five research centers in the NW Himalayas during kharif 2017 to examine the variability and correlations among yield and quality traits. ANOVA revealed significant variation among genotypes for studied traits in each as well as pooled environments. In pooled environment, heritability varied from 37.46% to 98.70% while, genetic advance as per cent of mean ranged from 2.62% to 29.94%. In individual and pooled environments, genotypic correlation was higher than their corresponding phenotypic correlation for all concerned traits. Grain yield per plant had significant positive phenotypic correlations and direct effect with days to 75 % maturity, fertility percentage and harvest index while genotypic correlations with days to maturity, fertility percentage and milling percentage. Consequently, days to maturity, fertility percentage, harvest index and milling percentage can be used as selection criteria for grain yield.
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