| 稻米胚重相关性状QTL分析 |
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| 引用本文： | 张光恒,曾大力,郭龙彪,董国军,钱前,张国平,滕胜,朱立煌.稻米胚重相关性状QTL分析[J].作物学报,2005,31(2):224-228. |
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| 作者姓名： | 张光恒 曾大力 郭龙彪 董国军 钱前 张国平 滕胜 朱立煌 |
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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： | 浙江省自然科学基金，国家自然科学基金 |
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| 摘 要： | 利用米粒胚重差异显著的广东早籼品种窄叶青8号（ZYQ8）和北方粳稻品种京系17（JX17），以及由它们构建的加倍单倍体（DH）群体127个株系，对糙米重、胚乳重、胚重和胚重率4个性状进行了评价与QTL分析。4个性状表现型均为连续分布，且都存在一定数量的双向超亲遗传类型，受多基因控制。共检测到13个影响4个性状的QTL，分布于
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| 关 键 词： | 水稻 DH群体 数量性状基因 胚重 |
| 收稿时间： | 2003-12-29 |
| 修稿时间： | 2003年12月29 |
QTL Analysis of Embryo Weight Correlative Traits in Rice (Oryza sativa L.) |
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| ZHANG Guang-Heng,ZENG Da-Li,GUO Long-Biao,DONG Guo-jun,QIAN Qian,ZHANG Guo-Ping,TENG Sheng,ZHU Li-Huang.QTL Analysis of Embryo Weight Correlative Traits in Rice (Oryza sativa L.)[J].Acta Agronomica Sinica,2005,31(2):224-228. |
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| Authors: | ZHANG Guang-Heng ZENG Da-Li GUO Long-Biao DONG Guo-jun QIAN Qian ZHANG Guo-Ping TENG Sheng ZHU Li-Huang |
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| Institution: | State Key Laboratory for Rice Biology, CNRRI, Hangzhou 310006, Zhejiang |
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| Abstract: | QTLs for 4 embryo weight correlative traits including brown rice weight (BRW), endosperm weight (ENW), embryo weight (EW) and embryo weight rate (EWR), were investigated by using a population of 127 DH lines derived from a cross between JX17 and ZYQ8. Transgressive segregations for the 4 traits were observed in the population, and their distributions were approximately normal. A total of 13 QTLs affecting these traits were detected on chromosome 2, 3, 4, 6, 9, 10 and 12 including four QTLs for BRW, five QTLs for ENW, two QTLs for EW and two QTLs for EWR. Four QTLs for BRW were located on the same regions with those for ENW, which showed there is close genetic correlation between BRW and ENW. Two QTLs (qEW-3 and qEW-4)for EW were detected on chromosome 3 and 4. LOD values of the two QTLs were 2.89 and 3.34, and their contributions were 13.8% and 14.1%, respectively. The allele of qEW-3 from JX17 would increase EW, while the allele of qEW-4 from ZYQ8 would increase EW. Two QTLs controlling EWR were detected on chromosome 4 and 9 (qEWR-4 and qEWR-9). Their LOD values were 2.92 and 2.63, and the explained phenotypic variation was 10.6% and 11.2%, respectively. Both of the alleles from ZYQ8 increased EWR. It was indicated that the QTLs controlling embryo correlative traits in this population were affected by minor genes located on different chromosomes from that of giant embryo gene (ge). |
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| Keywords: | Rice (Oryza sativa L ) Doubled haploid (DH) population Quantitative trait loci (QTL) Embyo weight |
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