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作物学报 ›› 2016, Vol. 42 ›› Issue (05): 648-657.doi: 10.3724/SP.J.1006.2016.00648

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

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

于亚辉1,2,刘郁1,李振宇1,陈广红1,徐正进2,唐亮2,*,毛艇1,徐海2   

  1. 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
  • 收稿日期:2015-09-11 修回日期:2016-01-11 出版日期:2016-05-12 网络出版日期:2016-02-18
  • 通讯作者: 唐亮, E-mail: tl_rice@126.com
  • 基金资助:

    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。

Relationship between Indica-Japonica Index of Parents and Heterosis of Hybrid and Its Genetic Basis in Japonica Two Line Hybrid Rice

YU Ya-Hui1,2,LIU Yu1,LI Zhen-Yu1,CHEN Guang-Hong1,XU Zheng-Jin2,TANG  Liang2,*,MAO Ting1,XU Hai2   

  1. 1Liaoning Institute of Saline-Alkali Land Utilization, Panjin 124010, China; 2Rice Research Institute, Shenyang Agricultural University, Shenyang 110866, China
  • Received:2015-09-11 Revised:2016-01-11 Published:2016-05-12 Published online:2016-02-18
  • Contact: Tang Liang, E-mail: tl_rice@126.com
  • Supported by:

    This study was supported by the Cultivation Plan for Youth Agricultural Science and Technology Innovative Talents of Liaoning Province (2015034, 2014046) and the Science and Technology Items of Liaoning Province (2014020004-101).

摘要:

以籼粳重组自交系(秋光×七山占,RILs)和粳型光温敏核不育系(GB028S)及其杂交F1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;RILs偏粳系数与F1产量及其杂种优势均呈显著或极显著的二次曲线关系;F1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RILs偏粳系数为0.55~0.65时F1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F1产量及杂种优势关系密切,双亲的遗传距离与F1产量和相关性状及杂种优势没有明显的关系。

关键词: 重组自交系, 两系杂交粳稻, 杂种优势, 籼粳成分

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.

Key words: RIL, Two-line hybrid rice, Heterosis, Indica-japonica composition

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