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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。
The differences in the general combining ability between the yield and its components of rice restorer lines in China and South Asia were analyzed to provide references for the introduction and utilization of South Asia resources. Using 37 restorer lines from China, India and other countries, 111 hybrids were crossed with Gang 46A, Lu 98A and Dexiang 074 according to the NC Ⅱ design, and were tested in two environments of Luzhou and Deyang in Sichuan Province. Analysis of the combining ability of 8 yield traits. The results showed that: (1) The variance of general combining ability and special combining ability of eight traits reached significant or extremely significant level in two environments, and the variance of general combining ability was greater than that of special combining ability, indicating that the additive effect of these trait genes accounted for leading position. (2) Eight traits of hybrid generation traits were more affected by the restorer lines than the CMS lines. (3) The general combining ability of effective panicles in India and Bangladesh is better than that in China. The general combining ability of other traits is better than that in South Asia. There is a certain difference between the combining ability of the yield traits of resources recovery in China and South Asia. The cohesive power of effective panicles in India and Bangladesh is better, and the rest of resources in China are better.