Combining Ability Analysis over Environments for Yield and Yield Attributing Traits in Rice Under Temperate Conditions

The experimental material comprised of 28 F1’s generated by crossing 8 diverse parents in a half diallel which were evaluated over two locations for different morpho-agronomic traits.The analysis of variance revealed significant differences among the parents and their crosses for all the traits. The variance due to gca and sca was significant which showed that both were important in the inheritance of the traits. Significant interaction between parentsx crossesx environments was observed for all the traits. Estimates of combining ability revealed that SKAU 382, Jhelum, Chenab and Ch 1039 were desirable combiners for earliness, whereas SKAU 389 and Shalimar Rice 1 were found desirable combiners for grain yield plot⁻¹. Jhelum x Ch 1039, SKAU 389 x Ch 1039 were the most desirable crosses for grain yield plot⁻¹.