Gene action for some quantitative traits in rice

摘要

Analysis of gene effects was performed using means of six generations, viz., P_1, P_2, F_1, F_2, BC_1 and BC of a cross, Mahsuri x Manoharsali to determine the nature and magnitude of gene actions governing yield and yield components. Both additive and nonadditive gene actions were important in controlling all the characters studied. Epistatic effects of mainly duplicate type were predominant over additive and dominance effects for all the traits. Breeding method such as reciprocal recurrent selection could be useful in the genetic improvement of the characters studied.