摘要：分析中国与南亚水稻恢复系资源产量及其构成要素的一般配合力差异,为引进与利用南亚资源提供参考。利用来自中国和印度等国的37份恢复系材料,按照NCⅡ设计,分别与冈46A、泸98A和德香074杂交,获得111份杂交种作为试验材料,在四川泸州和德阳两个环境下,分析8个产量性状的配合力。结果表明:(1)8个性状在两个环境下,一般配合力和特殊配合力方差达到显著或极显著水平,一般配合力方差均大于特殊配合力方差,表明这些性状基因的加性效应占主导地位。(2)8个性状杂种一代性状受恢复系的影响大于不育系。(3)印度和孟加拉材料有效穗一般配合力好于中国资源,其他性状一般配合力中国资源优于南亚来源材料。中国与南亚恢复资源产量性状配合力有一定的差异,印度和孟加拉资源有效穗配合力较好,中国恢复系资源其他性状较好。

摘要：[Objective] This study was conducted to analyze the difference in the general combining ability of yield traits of rice varieties in China and South Asia and to provide reference for the introduction and utilization of rice restorer lines from South Asia. [Method] A total of 111 hybrids were obtained by crossing 37 restorer lines in China and South Asia with Gang 46A, Lu 98A and Dexiang 074 following a NC II design. The combining ability of eight yield traits of the hybrids was analyzed in Luzhou and Deyang bases of Sichuan Province. [Result] In both bases, the eight yield traits had significant or extremely significant differences between the combina- tions, restorer lines, sterile lines or sterile line^restorer line, suggesting that there were d^erences in the genetic effects between the combinations or lines. The gen- eral combining ability （GCA） variances were all higher than special combining ability （SCA） variances in parents, which indicated that these traits were affected by gene additive effect. Restorer lines contributed more to F1 generation than male sterile liens in the eight yield traits. Nine restorer lines from India and Bangladesh were ranked in the top 15 lines with high GCA in the number of productive tillers in both bases. [***] There was significant differences in the combining ability in the eight yield traits between the restorer lines from China and South Asia. The lines from India and Bangladesh were better than those from China in the GCA of the number of productive tillers, and the lines from China were better than those from India and Bangladesh in the GCA of other traits.

摘要：利用香型高配合力三系不育系德香074A及其他4个生产上应用面积较大的不育系(K22A、冈46A、Ⅱ-32A和K17A),按照NCⅡ设计的原理,分别与明恢63、成恢727、泸恢H103、泸恢8258和蜀恢527等5个恢复系杂交,构建双列杂交群体,分析了单株产量、单株有效穗数、单穗质量、每穗颖花数、每穗实粒数、结实率、千粒重等7个产量相关性状的遗传力及配合力。结果表明,德香074A共有6个性状一般配合力效应值为正值,分别是单株产量(9.04)、单株有效穗数(6.27)、单穗质量(3.29)、每穗实粒数(0.15)、结实率(1.40)和千粒重(2.40),是供试不育系中正值性状最多的不育系。7个性状中,千粒重的遗传力最强,广义和狭义遗传力分别为94.69%和80.69%,表明这一性状不易受环境的影响。