中国水稻科学

中国水稻科学

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稻米直链淀粉含量和胶稠度对高温耐性的QTL分析

朱昌兰1;江玲1;张文伟1;王春明1;翟虎渠2;万建民1，2，*   

  1. 1南京农业大学 作物遗传与种质创新国家重点实验室， 江苏省植物基因工程研究中心， 江苏 南京 210095； 2中国农业科学院 作物科学研究所， 北京 100081； *通讯联系人， E-mail: wanjm@njau.edu.cn
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-05-10 发布日期:2006-05-10

Identifying QTLs for Thermo-Tolerance of Amylose Content and Gel Consistency in Rice

ZHU Chang-lan , JIANG Ling , ZHANG Wen-wei , WANG Chun-ming , ZHAI Hu-qu , WAN Jian-min
  

  • Received:1900-01-01 Revised:1900-01-01 Online:2006-05-10 Published:2006-05-10

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被引次数

38

摘要： 利用由98个家系组成的Nipponbare/Kasalath//Nipponbare回交重组自交系群体，以直链淀粉含量耐热指数（高温下直链淀粉含量/适温下直链淀粉含量×100）和胶稠度耐热指数（高温下胶稠度/适温下胶稠度×100）为评价指标，采用混合线性模型的QTL定位方法，在南昌和南京两个试验地点对水稻蒸煮食用品质性状的高温耐性QTL进行了检测。两个性状在两个试验地点共检测到9个QTLs，其中直链淀粉含量高温耐性QTL 3个，胶稠度高温耐性QTL 6个。两个性状中共有3个QTLs在两个地点同时被检测到。其中位于第6染色体上与Wx基因相同的染色体区域和第8染色体G1073-R727区域分别是控制直链淀粉含量和胶稠度高温耐性的重要区域。

关键词: 稻米, 直链淀粉含量, 胶稠度, 高温耐性, 数量性状基因座位

Abstract: A mapping population of 98 backcross inbred lines (BILs) derived from a backcross, Nipponbare/Kasalath//Nipponbare, was used to identify the quantitative trait loci(QTL) conferring the thermo-tolerance of amylose content and gel consistency in rice by mixed linear model approaches. A total of nine QTLs including three QTLs for thermo-tolerance of amylose content and six QTLs for thermo-tolerance of gel consistency were detected in Nanchang and Nanjing, respectively. Three QTLs for these two traits were common in the two experimental locations. The same region as Wx locus on chromosome 6 and interval of G1073-R727 on chromosome 8 were important regions for the thermo-tolerance of amylose content and gel consistency respectively.

Key words: rice, amylose content, gel consistency, thermo-tolerance, quantitative trait locus