中文摘要：

SA是由聚合光（温）敏雄性核不育和核质互作不育基因选育出的具有2套不育机制的新型光（温）敏核质互作不育系，为了解其所配组合产量的杂种优势及与亲本不育系S和A所配组合的差别，将2个新型粳稻不育系2308SA和2310SA及对照亲本不育系2308S（2308SA亲本）、2310S（2310SA亲本）、2277A（2310SA和2308SA共同亲本）与6个粳稻恢复系配制杂交组合。组合F1分别在海南省陵水县和安徽省合肥市种植，对F1单株谷重的杂种优势、配合力及主要产量经济性状进行分析和比较。结果表明，SA与不同的恢复系组配，F1单株谷重不同，不同生态地区，同一组合单株谷重有时差别较大。SA配制的组合F1单株谷重普遍有正向超高亲优势，与亲本不育系S和A配制的组合相比，有些组合具更强的产量超高亲优势和竞争优势。F1单株谷重的配合力分析表明，选育的2310SA在2个试验点的一般配合力均强于亲本不育系2310S和2277A，其配制的组合有的也表现出较好的特殊配合力。另外，SA配制的组合在产量经济性状上，陵水点的单株有效穗数变异较大，合肥点的每穗总粒数变异较大，它们各自对产量的贡献也都最大；陵水点的结实率显著高于亲本A配制的组合，合肥点的结实率显著高于亲本S配制的组合，合肥点的穗总粒数显著高于A配制的组合而结实率显著降低，其他性状差异不显著。

英文摘要：

SA--a new type of japonica photo （thermo） -sensitive cytoplasmic male sterile （PCMS） line that consists of photo （thermo） -sensitive genic male sterile （P （T） GMS） and cytoplasmic male sterile （CMS） genes, was bred. Respectively analyzed were the F1 yield per plant heterosis, combining ability and the major economic traits of combinations, which were from the japonica lines 2308SA, 2310SA and their parent lines （2308S, 2310S and 2277A） crossed with six japonica restorers, and planted in Lingshui of Hainan Province and Hefei of Anhui Province, in order to learn of the yield heterosis of combinations from SA and the differences between SA line and its parents S or A line. The results indicated that the yield heterosis expression of F1 hybrids for SA was different with different restorers or different areas. Both in Lingshui and Hefei, there was a commonly positive super-male parent yield heterosis in the combinations for SA and some combinations showed better over-comparison and super-male parent yield heterosis compared to the combinations crossed with S or A lines. 2310SA showed better general combining ability （GCA） than its parents （2310S and 2277A） and some of its combinations displayed strong specific combining ability （SCA）. In addition, the results also suggested that active panicles per plant of F1 hybrids for SA lines had big variance coefficient in Lingshui while total grains per panicle had big variance coefficient in Hefei, which were of great importance to yield per＇plant, respectively. Tile seedsetting rate of combinations of SA lines increased significantly in comparison with combinations of both A line in Lingshui and S line in Hefei. And in Hefei, the total grains per panicle increased significantly while the seed-setting rate decreased significantly compared to combinations of A line. There wasn＇t noticeable difference in other economic traits of combinations between SA lines and its parents S or A lines.