| 基于多重相关RIL群体的玉米株高和穗位高QTL定位 |
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| 引用本文： | 李清超,李永祥,杨钊钊,刘成,刘志斋,李春辉,彭勃,张岩,王迪,谭巍巍,孙宝成,石云素,宋燕春,张志明,潘光堂,黎裕.基于多重相关RIL群体的玉米株高和穗位高QTL定位[J].作物学报,2013,39(9):1521-1529. |
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| 作者姓名： | 李清超 李永祥 杨钊钊 刘成 刘志斋 李春辉 彭勃 张岩 王迪 谭巍巍 孙宝成 石云素 宋燕春 张志明 潘光堂 黎裕 |
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| 作者单位： | 1 中国农业科学院作物科学研究所，北京 100081；2 四川农业大学玉米研究所, 四川成都 611130; 3 新疆农业科学院粮食作物研究所，新疆乌鲁木齐830000；4 西南大学农学院，重庆 400716；5 毕节市农业科学研究所, 贵州毕节 551700 |
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| 基金项目： | 本研究由国家重点基础研究发展计划(973计划)项目(2011CB100100, 2009CB118401)和国家国际科技合作项目(2011DFA30450)资助。 |
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| 摘 要： | 株高和穗位高是玉米育种中的重要农艺性状。本研究利用我国玉米育种中骨干亲本黄早四与来自不同杂种优势群的其他11个骨干自交系组配11个RIL群体，开展基于单环境、联合环境的QTL分析，分别检测到269个和176个QTL。通过区段整合，检测到21个株高主效QTL及15个穗位高主效QTL，这些QTL分布在第1、第2、第3、第6、第7、第8、第9、第10染色体上。相对于共同亲本黄早四而言，部分QTL在不同RIL群体中的效应方向一致，来自共同亲本黄早四的等位基因在不同群体中能够稳定地表达。同时，还分别定位到在多环境下稳定表达的5个株高、4个穗位高“环境钝感QTL”。此外，进一步鉴定出5个重要的株高和穗位高QTL富集区段(bin 1.01-1.02，1.08-1.11，3.05，8.03-8.05和9.07)，这些区段均包含多个株高和穗位高相关QTL，如bin3.05位点包含7个QTL，bin8.03-8.05位点分别包含9个QTL，且这些QTL至少在3个不同环境中能够被检测到，这些区域对QTL的精细定位和克隆有重要参考价值。
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| 关 键 词： | 玉米 株高 穗位高 RIL QTL |
| 收稿时间： | 2012-12-17 |
QTL Mapping for Plant Height and Ear Height by Using Multiple Related RIL Populations in Maize |
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| LI Qing-Chao,LI Yong-Xiang,YANG Zhao-Zhao,LIU Cheng,LIU Zhi-Zhai,LI Chun-Hui,PENG Bo,ZHANG Yan,WANG Di,TAN Wei-Wei,SUN Bao-Cheng,SHI Yun-Su,SONG Yan-Chun,ZHANG Zhi-Ming,et al..QTL Mapping for Plant Height and Ear Height by Using Multiple Related RIL Populations in Maize[J].Acta Agronomica Sinica,2013,39(9):1521-1529. |
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| Authors: | LI Qing-Chao LI Yong-Xiang YANG Zhao-Zhao LIU Cheng LIU Zhi-Zhai LI Chun-Hui PENG Bo ZHANG Yan WANG Di TAN Wei-Wei SUN Bao-Cheng SHI Yun-Su SONG Yan-Chun ZHANG Zhi-Ming |
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| Affiliation: | 1.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China;2.Maize Research Institute, Sichuan Agricultural University, Chengdu 611130, China;3.Institute of Food Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China;4.Southwest University, Chongqing 400716, China?;5.Bijie Institute of Agricultural Sciences, Bijie 551700, China |
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| Abstract: | Plant height and ear height are two important agronomic traits in maize. In this study, 11 RIL populations developed by crossing a common parent (Huangzaosi, a foundation inbred line of maize breeding in China) with other 11 elite inbred lines were applied to QTL mapping for plant height and ear height based on phenotype data of three locations in two years. A total of 269 QTL detected by single- environment analysis and 176 QTL by joint analysis were identified across all of six environments, respectively. Collectively, 21 major-effect QTL for plant height and 15 major effect QTL for ear height were detected, which were located on chromosome. 1, 2, 3, 6, 7, 8, 9, and 10. It was found that the common parent (Huangzaosi) contributed the positive alleles for some QTL across different RIL populations. Five and four environment-insensitive QTL for plant height and ear height were also identified, respectively. Five QTL clustering regions related to plant and ear height, such as bin 1.01–1.03, 1.08–1.11, 3.05–3.06, 8.03–8.05, and 9.07, were dissected, of which each region were covered under more than three environments. These genomic regions would be valuable for fine mapping and cloning of height related QTL in maize. |
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| Keywords: | Maize Plant height Ear height RIL QTL |
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