| 水稻苗期抗旱性的QTL分析 |
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| 引用本文： | 徐群,袁筱萍,余汉勇,王一平,汤圣祥,魏兴华. 水稻苗期抗旱性的QTL分析[J]. 中国水稻科学, 2010, 24(5): 469-473. DOI: 10.3969/j.issn.1001-7216.2010.05.004 |
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| 作者姓名： | 徐群 袁筱萍 余汉勇 王一平 汤圣祥 魏兴华 |
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| 作者单位： | 中国水稻研究所,水稻生物学国家重点实验室,浙江,杭州,310006 |
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| 基金项目： | 中央级公益性科研院所专项资金资助项目，浙江省农业重大科技项目，国家科技支撑计划资助项目 |
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| 摘 要： | 利用251个株系组成的Maybelle/白叶秋的加倍单倍体群体,构建了由226个SSR分子标记组成的遗传图谱。通过两年抗旱棚苗期抗旱性鉴定,应用复合区间作图法和QTLNetwork2.0对水稻苗期抗旱性进行QTL定位及互作效应分析。利用前者在两年共检测到5个抗旱性相关QTL,分别位于第2、3、5、6和8染色体;而通过后者在第2、3、5和6染色体上也找到了抗旱性相关的QTL,并且通过两种方法检测到的第3、5、6染色体上的3个QTL所在区间吻合;还发现4个具有上位性的QTL。所有抗旱性QTL的加性效应均为正值,表明来自父本白叶秋的这些抗旱性位点可以提高水稻的抗旱性。
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| 关 键 词： | 水稻 抗旱性 加倍单倍体群体 数量性状基因座 |
| 收稿时间： | 1900-01-01; |
Mapping QTLs for Drought Resistance at Seedling Stage in Rice by Using a Doubled Haploid Population |
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| XU Qun,YUAN Xiao-ping,YU Han-yong,WANG Yi-ping,TANG Sheng-xiang,WEI Xing-hua. Mapping QTLs for Drought Resistance at Seedling Stage in Rice by Using a Doubled Haploid Population[J]. Chinese Journal of Rice Science, 2010, 24(5): 469-473. DOI: 10.3969/j.issn.1001-7216.2010.05.004 |
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| Authors: | XU Qun YUAN Xiao-ping YU Han-yong WANG Yi-ping TANG Sheng-xiang WEI Xing-hua |
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| Affiliation: | State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China; *Corresponding author, E-mail: xwei@mail.hz.zj.cn |
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| Abstract: | Abstract: The QTLs for drought resistance at the seedling stage were analyzed by using a doubled haploid (DH) population consisted of 251 lines from the cross between a japonica parent Maybelle and an indica parent Baiyeqiu. A genetic linkage map with 226 SSR markers was constructed. Through single locus analysis following composite interval mapping (CIM), a total of 5 QTLs were detected on 5 different chromosomes. Four QTLs were also detected by two locus analysis, which resolved 4 epistatic QTLs (E QTLs). The additive genetic effects of all QTLs were positive, indicating the alleles from Baiyeqiu improve drought tolerance of the DH population. |
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| Keywords: | rice drought resistance doubled haploid population |
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