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选用 D2 97A(籼稻 Dissi细胞质 )、N.珍汕 97A(Oryza nivara细胞质 )、 - 32 A(印尼水田谷细胞质 )和龙特浦 A(野败细胞质 )为细胞质供亲 ,龙特浦 B为细胞核供亲 ,回交核置换育成 4个龙特浦同核异质不育系 (分别简称为 D特 A、N特 A、I特 A和 W特 A) .以此为材料 ,采用裂区设计 ,于 1995、1996年观察比较了它们在不同条件 (年份、播期、实生稻与再生稻 )下花粉的育性 .结果表明 ,同核异质不育系不育度在年份间、播期间、实生稻与再生稻间差异极显著 ,不同细胞质不育系间差异显著 ,其中 I特 A在各种处理条件下均表现出最高的不育度和最好的不育稳定性 .通过回交核置换技术培育新核质关系的同核异质不育系 ,可达到修饰改良育性的目的 .
Selected D2 97A (indica rice Dissi cytoplasm), N. Zhenshan 97A (Oryza nivara cytoplasm), - 32 A (paddy rice cytoplasm) and Longtepu A (wild cat cytoplasm) for the cytoplasm of the cousin, Longtepu B nucleus For the pro-and backcrossing nuclear replacement four Longtepu nuclear heterogenous sterile lines (respectively referred to as D special A, N special A, I special A and W special A) .This material, the use of split design , And their fertility of pollen under different conditions (year, sowing date, seedling and ratooning rice) was observed and compared in 1995 and 1996. The results showed that the sterility of the same nuclear allogeneic sterile line , The difference between real and re-grown rice was very significant, and the difference among different cytoplasmic male sterile lines was significant, among which, I-A showed the highest sterility and the best sterility stability under various treatment conditions. Nuclear replacement technology to nurture the relationship between the new nuclear-nuclear heterologous sterile lines can be modified to achieve the purpose of improving fertility.