Abstract: A partial diallel cross including 9 rice male sterile lines as female parents and 3 wide compatible varieties as male parents was made to study combining ability for 10 characters of F1 hybrid. The main results were as follows: 1.The GCA ot parents played a more important role as compared with their SCA; 2.The GCA of parents played major role in 7 agronomic traits (grain weight per plant, 1000-grain weight, seed setting, grains per panicle, panicle length, panicles per plant and plant height) of F1 hybrids. Both the GCA and SCA of parents played an important role in 3 agronomic traits (total grains per panicle, days to heading and grains per 10cm panicle); 3.The effects of GCA of wide compatible varieties were important on 6 characters. The GCA of male sterile lines had major effect on 3 characters.

Key words: Rice, Wide compatible variety, Sterile line, Combining ability, Agronomic traits

CLC Number: 

• S511.01