Combining Ability Analysis for Yield and Components Traits in Fine Grain Rice of Mid Hills of Uttarakhand

Abstract

Nine fine grain rice genotypes viz., VL 30925, VL 30926, VL 30928, VL 30929, VL 30938, VL 31486, VL 31632, VL 31634, VL 31638 were crossed with four basmati varieties Pusa Basmati 1, Pusa Sugandh 2, Pusa Sugandh 3 and Pusa Sugandh 5 in a line x tester mating design. The preponderance of dominant gene action was observed for plant height, days to 50% flowering, days to maturity, grains per panicle, fertile grains per panicle, 1000 grain weight, kernel length, kernel width, L/B ratio and grain yield per plant. Five genotypes viz., VL 30928, VL 30929, VL 31632, VL 30925 and VL 31634 were found to be good general combiners and could be utilized to generate desirable segregants for future breeding programmes. High sca effects were observed in the crosses VL 30926 x P. Sug 5, VL 30929 x P. Sug 3, VL 30938 x P. Sug 5, VL 31486 x P. Sug 2, VL 31632 x P. Sug 5, VL 31634 x P. Bas 1 and VL 31638 x P. Bas 1 for grain yield and components traits.