| 水稻显性小粒基因Mi3(t)的遗传定位 |
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| 引用本文： | 刘明伟,刘勇,王世全,邓其明,李平.水稻显性小粒基因Mi3(t)的遗传定位[J].中国水稻科学,2005,19(6):511-515. |
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| 作者姓名： | 刘明伟 刘勇 王世全 邓其明 李平 |
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| 作者单位： | 1. 四川农业大学,水稻研究所,四川,成都,611130;四川农业生物技术工程研究中心,四川,成都,611130
2. 四川农业大学,水稻研究所,四川,成都,611130 |
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| 基金项目： | 国家863计划资助项目（2003AA212030）.谢辞：感谢四川省农业科学院作物研究所罗大刚先生提供水稻亲本极小粒材料Y34. |
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| 摘 要： | 对一份水稻小粒材料Y34进行了遗传研究及基因定位。Y34与长粒型水稻蜀恢881和蜀恢527的杂交F1表现为小粒，表明小粒性状受完全显性基因控制；同时，其F2群体小粒性状遗传分离规律均符合3∶1的分离比例，表明小粒性状受１对显性基因控制。利用蜀恢881/Y34 F2群体和微卫星标记，将该基因定位在第3染色体短臂上RM6283和RM282两个标记之间，其遗传距离分别为0.9 cM和5.1 cM，并将该基因初步命名为Mi3(t)。
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| 关 键 词： | 水稻 小粒 遗传分析 微卫星标记 |
| 文章编号： | 1001-7216（2005）06-0511-05 |
| 收稿时间： | 2004-11-29 |
| 修稿时间： | 2004-11-292005-01-14 |
Genetic Mapping of the Dominant Minute Grain Gene Mi3 (t) in Rice (Oryza sativa) |
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| LIU Ming-wei,LIU Yong,WANG Shi-quan,DENG Qi-ming,LI Ping.Genetic Mapping of the Dominant Minute Grain Gene Mi3 (t) in Rice (Oryza sativa)[J].Chinese Journal of Rice Science,2005,19(6):511-515. |
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| Authors: | LIU Ming-wei LIU Yong WANG Shi-quan DENG Qi-ming LI Ping |
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| Abstract: | Genetic analysis and gene location were conducted on Y34, a minute grain rice. All grains of F 1 populations derived from Y34 and two long grain rice (Shuhui 881 and Shuhui 527) were all minute grains, and the segregation ratios of the F 2 populations both were fitted to 3∶1, showing that the minute grain trait was controlled by a completely dominant gene. Using the F 2 population from the cross between Shuhui 881 and Y34 and simple sequence repeats markers, a completely dominant gene temporarily named Mi3(t), was located between RM282(the genetic distance was 5.1 cM) and RM6283(the genetic distance was 0.9 cM) on the short arm of chromosome 3. |
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| Keywords: | ricer minute grain genetic analysis simple sequence repeats gene location |
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