| 水稻籼粳亚种间杂种不育性的研究进展 |
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| 引用本文： | 李晓玲.水稻籼粳亚种间杂种不育性的研究进展[J].中国农学通报,2004,20(5):45-45. |
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| 作者姓名： | 李晓玲 |
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| 作者单位： | 华南农业大学广东省植物分子育种重点实验室,广东,广州,510642 |
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| 摘 要： | 克服杂种不育性是利用籼粳亚种间杂种优势的关键。由此对水稻亚种间杂种不育性的原因、细胞学基础及两种主要基因遗传模式进行了总结,并详细综述了利用“亲和基因”克服籼粳杂种不育性的两种有代表性的学说-广亲和基因和特异亲和基因分子定位的最新研究进展,并提出了两“亲和基因”共同利用的初步设想:将聚合了Si等位基因的粳型亲籼系与聚合了不同广亲和基因(中性亲和基因的广亲和力强、亲和谱广泛的粳型品种进行杂交和回交,选育出聚合不同广亲和基因和Si等位基因的粳型亲籼系,再与籼稻品种杂交,真正实现直接利用籼粳亚种间杂种优势。
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| 关 键 词： | 水稻(OryzasativaL.) 籼粳杂种不育性 广亲和基因 特异亲和基因 基因定位 |
Advances in Hybrid Sterility between Rice Subspecies Indica and Japonica |
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| Li Xiaoling.Advances in Hybrid Sterility between Rice Subspecies Indica and Japonica[J].Chinese Agricultural Science Bulletin,2004,20(5):45-45. |
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| Authors: | Li Xiaoling |
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| Abstract: | It is a key for the utilization of heterosis between rice subspecies indica and japonica to overcome hybrid sterility. So this paper summaries the reason and cytological basis of inter-subspecies hybrid sterility, and two main genetic model of genes; recent progress is summarized about the gene mapping of wide and specific compatibility genes, which can overcome hybrid sterility between indica and japonica by two compatible genes; and preliminary idea is proposed to exploit two compatible genes together; crosses and back-crosses are done between indica-compatible japonica lines (ICJLs) pyramiding Si alleles and strong wide-compatibility japonica varieties which pyramid different wide-compatibility genes or the neutral alleles, which screens out indica-compatible japonica lines with wide compatibility which pyramid different neutral compatible genes and Si alleles, then they cross with indica varieties, which may really realize to directly exploit the heterosis between indica and japonica. |
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| Keywords: | Rice (Oryza sativa L ) Hybrid sterility between indica and japonica Wide compatibility genes Specific compatibility genes Gene mapping |
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