| DH群体内株系对籼、粳亚种的亲和性 |
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| 引用本文： | 张再君,梁承邺,朱英国.DH群体内株系对籼、粳亚种的亲和性[J].作物学报,2005,31(4):511-514. |
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| 作者姓名： | 张再君 梁承邺 朱英国 |
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| 作者单位： | 武汉大学生命科学院植物发育生物学教育部重点实验室，湖北武汉430072 |
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| 基金项目： | 湖北省教育厅科技攻关项目，湖北省科技厅科技攻关项目 |
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| 摘 要： | 以窄叶青8号（ZYQ8）/京系17(JX17)的13个花培DH株系和培矮64／02428的11个花培DH株系为材料，分析了它们的籼粳分化及其对籼、粳亚种杂交的亲和性。结果表明，无论亲本是否具有广亲和性亲缘，两个DH群体均出现广亲和性良好的株系，且多数株系属籼粳中间类型。这说明虽然广亲和性是遗传的，但是籼粳基因的重组确实可以产生广
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| 关 键 词： | 加倍单倍体（DH） 水稻 亚种 广亲和性 |
| 收稿时间： | 2004-01-20 |
| 修稿时间： | 2004年1月20日 |
Compatibility of DH (Doubled Haploid) Lines from Indica/Japonica Hybrid to Indica and Japonica |
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| ZHANG Zai-Jun,LIANG Cheng-Ye,ZHU Ying-Guo.Compatibility of DH (Doubled Haploid) Lines from Indica/Japonica Hybrid to Indica and Japonica[J].Acta Agronomica Sinica,2005,31(4):511-514. |
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| Authors: | ZHANG Zai-Jun LIANG Cheng-Ye ZHU Ying-Guo |
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| Institution: | The Key Laboratory of MOE for Plant Developmental Biology, College of Life Science, Wuhan University, Wuhan 430072, Hubei |
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| Abstract: | The total 24 accessions selected randomly from two DH (doubled haploid) populations, which were derived from inter-subspecific crosses Zhaiyeqing 8 / Jingxi 17 and Pei'ai 64 / 02428 respectively, were crossed with four wide compatibility tester varieties in order to investigate their wide compatibility. According to Virmani S S(1992), a DH line tested will be designated as wide compatible (WC) line, if the spikelet fertility of its tested hybrid F 1 is significantly higher than that of the indica/japonica F 1 but similar to indica and japonica tester parents. A t test was used to compare the significance of differences in mean spikelet fertilities of the four testcrosses for each DH lines and the control crosses and the parents. The results (Table 2) indicated that DH lines with wide compatibility appeared in the two DH populations, no matter whether their parents had wide compatibility or not. This suggested that the recombination between indica and japonica genes could lead to wide compatibility. Interestingly, the wide compatibility of DH line had no correlation with self-pollination seed-setting percentage and seed threshing (Table 3). Moreover, most of the DH lines with wide compatibility belonged to an intermediate type between indica and japonica identified by means of Cheng's morphological traits index method (1987). In addition, the restoring fertility ability to cytoplasmic male sterile was independent of wide compatibility in the DH lines. |
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| Keywords: | Doubled haploid lines Rice (Oryza sativa L ) Subspecies Wide compatibility |
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