| 亲本籼粳成分与两系杂交粳稻杂种优势的关系及遗传基础 |
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| 引用本文： | 于亚辉,刘郁,李振宇,陈广红,徐正进,唐亮,毛艇,徐海.亲本籼粳成分与两系杂交粳稻杂种优势的关系及遗传基础[J].作物学报,2016,42(5):648-657. |
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| 作者姓名： | 于亚辉 刘郁 李振宇 陈广红 徐正进 唐亮 毛艇 徐海 |
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| 作者单位： | 1辽宁省盐碱地利用研究所，辽宁盘锦 124010；2沈阳农业大学水稻研究所，辽宁沈阳 110866 |
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| 基金项目： | 本研究由辽宁省农业领域青年科技创新人才培养计划(2015034, 2014046)和辽宁省科学技术计划项目(2014020004-101)资助。 |
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| 摘 要： | 以籼粳重组自交系(秋光×七山占,RIL)和粳型光温敏核不育系(GB028S)及其杂交F_1为材料,利用程氏指数法和分子标记法分析亲本的籼粳成分与杂种优势的关系及遗传基础。结果表明,采用程氏指数法和分子标记法在群体籼粳分类的结果上比较一致;RIL偏粳系数与F_1产量及其杂种优势均呈显著或极显著的二次曲线关系;F_1产量在偏粳系数0.55~0.70区间内出现高峰值,杂种优势在偏粳系数0.50~0.65区间内出现高峰值,即RIL偏粳系数为0.55~0.65时F_1有形成较高产量及杂种优势的潜力。Chr.8、Chr.11和Chr.12的籼粳成分与F_1产量及杂种优势关系密切,双亲的遗传距离与F_1产量和相关性状及杂种优势没有明显的关系。
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| 关 键 词： | 重组自交系 两系杂交粳稻 杂种优势 籼粳成分 |
| 收稿时间： | 2015-09-11 |
Relationship between Indica-Japonica Index of Parents and Heterosis of Hybrid and Its Genetic Basis in Japonica Two Line Hybrid Rice |
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| YU Ya-Hui,LIU Yu,LI Zhen-Yu,CHEN Guang-Hong,XU Zheng-Jin,TANG Liang,MAO Ting,XU Hai.Relationship between Indica-Japonica Index of Parents and Heterosis of Hybrid and Its Genetic Basis in Japonica Two Line Hybrid Rice[J].Acta Agronomica Sinica,2016,42(5):648-657. |
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| Authors: | YU Ya-Hui LIU Yu LI Zhen-Yu CHEN Guang-Hong XU Zheng-Jin TANG Liang MAO Ting XU Hai |
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| Institution: | 1.Liaoning Institute of Saline-Alkali Land Utilization, Panjin 124010, China;2.Rice Research Institute, Shenyang Agricultural University, Shenyang 110866, China |
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| Abstract: | In order to further reveal the relationship between composition of subspecies lineage and heterosis in Oryza sativa L., we built a bridgefor morphological index, Cheng’s index (Chi) andmolecular index, japonica discrimination values (Dj) based on two populations, a recombinant inbred lines (RILs), derived from the cross betweenindicacultivar Qishanzhan and japonica cultivar Akihikari, and japonica photo-thermo sensitive genic male sterile(PTGMS) lineGB028S and their F1 hybrids. Two indexs achieved relatively consistent results in two populationsindependently. Significant curvilinear relationship appeared among Djvalues, F1 yield and yield heterosis. The peaks of F1 yield and yield heterosis were detected in Djinterval from 0.55 to 0.70 and from 0.50 to 0.65 respectively, indicating that 0.55−0.65 is the preferential Dj interval for producing high yield and heterosis of F1 hybrids. Compositions of subspecies lineage on Chr.8, Chr.11, and Chr.12 were closely related with yield and heterosis of F1, however, the relationship among parent’s genetic distance, F1 yield and heterosis was not significant. |
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| Keywords: | RIL Two-line hybrid rice Heterosis Indica-japonica composition |
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