| 萍乡核不育水稻的新恢复系及遗传分析 |
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| 引用本文： | 王坚,杨晓杰,裴庆利,王春连,刘丕庆,赵开军.萍乡核不育水稻的新恢复系及遗传分析[J].作物学报,2011,37(3):552-558. |
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| 作者姓名： | 王坚 杨晓杰 裴庆利 王春连 刘丕庆 赵开军 |
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| 作者单位： | 1中国农业科学院作物科学研究所 / 农业部作物遗传育种重点实验室 / 农作物基因资源与基因改良国家重大科学工程，北京100081；2宁夏农林科学院农作物研究所, 宁夏银川750105；3广西大学农学院，广西南宁530005 |
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| 基金项目： | 由国家高技术研究发展计划(863计划)项目，宁夏自然科学基金 |
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| 摘 要： | 在构建萍乡核不育水稻显性核不育基因定位群体时，我们意外发现一些前人报道的保持系表现出恢复性，为此本试验对这几个品系与萍乡核不育水稻杂交后代育性分离做了系统的分析。结果表明，萍乡核不育水稻不育单株与可育单株杂交F1代的不育株与可育株按1∶1分离，高温自交后代不育株与可育株按3∶1分离。萍乡核不育水稻不育单株分别与桂99、特青和9311BB23杂交，它们的F1代均可育，表现恢复性。由F1代产生的F1:2家系中出现全可育群体和育性分离群体的比例为1∶1。其中育性分离群体中不育株与可育株按3∶13进行分离。从育性分离的F1:2家系中的可育株自交产生的F2:3家系出现全可育群体和育性分离群体的比例为7∶6。这些分离规律表明，桂99、特青和9311BB23具有恢复基因，并对萍乡核不育水稻的显性核不育基因表现出显性上位作用，能抑制显性不育基因的表达，从而使不育性转变为可育。
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| 关 键 词： | 萍乡核不育水稻 恢复系 显性上位作用 |
| 收稿时间： | 2010-07-20 |
New Restorer Lines and Genetic Analysis of Pingxiang Dominant Genic Male Sterile Rice |
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| WANG Jian,YANG Xiao-Jie,PEI Qing-Li,WANG Chun-Lian,LIU Pi-Qing,ZHAO Kai-Jun.New Restorer Lines and Genetic Analysis of Pingxiang Dominant Genic Male Sterile Rice[J].Acta Agronomica Sinica,2011,37(3):552-558. |
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| Authors: | WANG Jian YANG Xiao-Jie PEI Qing-Li WANG Chun-Lian LIU Pi-Qing ZHAO Kai-Jun |
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| Institution: | 1.Key Laboratory of Crop Genetics and Breeding, Ministry of Agriculture / National Key Facility for Crop Gene Resources and Genetic Improvement / Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China;2.Crop Institute of Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750105, China;3.Agricultural College, Guangxi University, Nanning 530005, China |
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| Abstract: | In construction of Pingxiang Dominant Genic Male Sterile Rice(PDGMSR)sterile gene mapping population,we found some reported maintainer lines shown the fertility restoration ability.Thus,this study systemly analyzed the fertility separation of F1,F2 and F3 populations of the crosses between the PDGMSR and the reported maintainer lines.We observed that the progenies from sib-crosses between male-sterile plant and fertile plant of the PDGMSR were always segregated in a ratio of 1 male-sterile to 1 fertile.The ... |
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| Keywords: | PDGMSR Restoring lines Epistasis |
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