| Genetic Analysis and Mapping of Dominant Minute Grain Gene Mi3（t） in Rice |
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| 引用本文： | LIu Ming-wei LIU Yong WANG Shi-quan DENG Qi-ming LI Ping. Genetic Analysis and Mapping of Dominant Minute Grain Gene Mi3（t） in Rice[J]. 水稻科学, 2005, 12(4): 243-248 |
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| 作者姓名： | LIu Ming-wei LIU Yong WANG Shi-quan DENG Qi-ming LI Ping |
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| 作者单位： | [1]Rice Research Institute, Sichuan Agricultural University, Wenjiang 611130, China; E-mail： biowee@163.com [2]Sichuan Agri-Bio-Tech Research Center, Sichuan Agricultural University, Wenjiang 611130, China |
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| 基金项目： | ACKN0WLEDGEMENT This work was supported by National High Technology Research and Development Program of China （2003AA212030）. |
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| 摘 要： | Grain size, determined chiefly by grain length, is one of the main factors affecting the grain yield in rice production. To study the trait of rice grain size, F1 and F2 populations were developed from crosses Shuhui 881/Y34 and Shuhui 527/Y34, and genetic analysis for minute grain was performed. The F1 populations showed minute grains, and grain size segregations in the two F2 populations were both in accordance with the ratio of 3：1, indicating that minute grain in Y34 was controlled by a completely dominant gene. By using the F2 population from Shuhui 881/Y34, this dominant gene, tentatively designated as Mi3（t）, was mapped based on SSR markers in the interval between RM282 （genetic distance of 5.1 cM） and RM6283 （genetic distance of 0.9 cM） on the short arm of chromosome 3.
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| 关 键 词： | 水稻 基因分析 基因定位 农作物 质量性状 |
| 收稿时间： | 2005-05-23 |
| 修稿时间： | 2005-07-20 |
Genetic Analysis and Mapping of Dominant Minute Grain Gene Mi3(t) in Rice |
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| LIu;Ming-wei;LIU;Yong;WANG;Shi-quan;DENG;Qi-ming;LI;Ping. Genetic Analysis and Mapping of Dominant Minute Grain Gene Mi3(t) in Rice[J]. Rice science, 2005, 12(4): 243-248 |
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| Authors: | LIu Ming-wei LIU Yong WANG Shi-quan DENG Qi-ming LI Ping |
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| Affiliation: | 1.Rice Research Institute, Sichuan Agricultural University, Wenjiang 611130, China; E-mail: biowee@163.com;2.Sichuan Agri-Bio-Tech Research Center, Sichuan Agricultural University, Wenjiang 611130, China |
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| Abstract: | Grain size, determined chiefly by grain length, is one of the main factors affecting the grain yield in rice production. To study the trait of rice grain size, F1 and F2 populations were developed from crosses Shuhui 881/Y34 and Shuhui 527/Y34, and genetic analysis for minute grain was performed. The F1 populations showed minute grains, and grain size segregations in the two F2 populations were both in accordance with the ratio of 3:1, indicating that minute grain in Y34 was controlled by a completely dominant gene. By using the F2 population from Shuhui 881/Y34, this dominant gene, tentatively designated as Mi3(t), was mapped based on SSR markers in the interval between RM282 (genetic distance of 5.1 cM) and RM6283 (genetic distance of 0.9 cM) on the short arm of chromosome 3. |
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| Keywords: | rice minute grain genetic analysis gene location |
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