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对用91-32S、1647S、C407S和1876S粳型光敏核不育系分别与14个水稻品种(系)配置的杂交组合进行杂种优势分析,结果表明:4个粳型光敏核不育系杂种产量都具有较明显的超亲优势和竞争优势;91-32S和1647S所配组合综合性状好;结实率和千粒重是影响4个光敏核不育系杂种产量提高的主要因素,两系杂交稻选育应注意亲缘隔离,以粳型光敏核不育系配爪哇型恢复系为主要途径。
The heterosis analysis of the hybrid combinations of 91-32S, 1647S, C407S and 1876S japonica-type photo-sensitive genic male sterile lines with 14 rice cultivars (lines) was carried out. The results showed that the hybrid yield of four japonica photoperiod-sensitive genic male sterile lines The results showed that 91-32S and 1647S had good combination characters, and the seed setting rate and 1000-grain weight were the main factors that affected the yield of four photo-sensitive genic male sterile lines. Breeding of two-line hybrid rice Should pay attention to kinship isolation, Japonica type photo-sensitive genic male sterile lines with Java-type restorer as the main way.