Studies on the Combining Ability of Indica Rice P(T)GMR Line
Luo Yanchang et al (Anhui Academy of Agricultural Sciences,Hefei 230031)
Using North Carolina Design II (NC II),30 F 1 hybrids were attempted from 6 indica P(T)GMS lines and 5 indica male parents. The parent's general combining ability (GCA) and combination's specific combining ability (SCA), heredility were investigated.The main results were as follow:(1)Among male sterile lines, X07S,3418S were good combiners,and among male parents,Zhihui100,Minghui 63, 2346 were good combiners in Indica .(2)The combination' SCA were independence of parent' GCA for seed setting and growth duration, but high SCA for plant height and filled grains per panicle were usually derived from at least one parent possessing high GCA.(3) Combinations with higher yield such as 3418S/2346、3418S/Minghui 63、X07S/2346、X07S/Zhihui 100.were selected.Some problems on two-line breeding method of hybrid rice have been discussed.
【CateGory Index】： S511.2