| QTL Mapping for Rice Hull Thickness and Related Traits in Hybrid RiceXieyou 9308简 |
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| 作者姓名： | LUO Li-li ZHANG Ying-xin CHEN Dai-bo ZHAN Xiao-deng SHEN Xi-hong CHENG Shi-hua CAO Li-yong |
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| 摘 要： |
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| 收稿时间： | 10 March 2013 |
QTL Mapping for Hull Thickness and Related Traits in Hybrid Rice Xieyou 9308 |
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| LUO Li-li,ZHANG Ying-xin,CHEN Dai-bo,ZHAN Xiao-deng,SHEN Xi-hong,CHENG Shi-hua,CAO Li-yong.QTL Mapping for Hull Thickness and Related Traits in Hybrid Rice Xieyou 9308[J].Rice science,2014,21(1):29-38. |
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| Institution: | 1. National Center for Rice Improvement, China National Rice Research Institute, Hangzhou 310036, China;2. College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 310036, China;1. Radiation Oncology Center, Ofuna Chuo Hospital, 6–2–24 Ofuna, Kamakura, Kanagawa 247–0056, Japan;2. Department of Respiratory Medicine, Ofuna Chuo Hospital, 6–2–24 Ofuna, Kamakura, Kanagawa 247–0056, Japan;3. Department of Pulmonology, Yokohama City University Graduate School of Medicine, 3-9, Fukuura, Kanazawa, Yokohama, Japan;4. Department of Radiation Oncology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan;5. Department of Radiation Oncology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo 160-0016, Japan;1. Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, College of Chemistry and Life Science, Huanggang Normal University, Huanggang 438000, China;2. Institute of South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Science, Zhanjiang 524091, China;3. College of Life Science, Shaoxing University, Shaoxing 312000, China;4. College of Agriculture, Henan University of Science and Technology, Luoyang 471003, China;1. Academy of Economic Studies of Moldova, Chisinau, Republic of Moldova;2. Academy of Economic Studies of Moldova, Chisinau, Republic of Moldova |
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| Abstract: | We conducted a quantitative trait locus (QTL) analysis of 165 rice recombinant inbred lines derived from a cross between Zhonghui 9308 (Z9308) and Xieqingzao B (XB) in Hainan and Hangzhou, China. Grain thickness (GT), brown rice thickness (BRT), hull thickness (HT) and milling quality were used for QTL mapping. HT was significantly and positively correlated with GT and BRT. Twenty-nine QTLs were detected with phenotypic effects ranging from 2.80% to 21.27%. Six QTLs, qGT3, qBRT3, qBRT4, qHT6.1, qHT8 and qHT11, were detected repeatedly across two environments. Inherited from XB, qHT6.1, qHT8 and qHT11 showed stable expression, explaining 9.92%, 21.27% and 10.83% of the phenotypic variances in Hainan and 9.61%, 6.40% and 6.71% in Hangzhou, respectively. Additionally, the QTL cluster between RM5944 and RM5626 on chromosome 3 was probably responsible for GT and milling quality. The cluster between RM6992 and RM6473 on chromosome 4 played an important role in grain filling. Three near isogenic lines (NILs), X345, X338 and X389, were selected because they contained homozygous fragments from Zhonghui 9308, corresponding to qHT6.1, qHT8 and qHT11, respectively. The hull of XB was thicker than those of X345, X338 and X389. In all the lines, qHT6.1, qHT8 and qHT11 that regulated rice HT were stably inherited with obvious genetic effects. |
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| Keywords: | rice hull thickness milling quality QTL mapping |
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