中国农业科学2011，Vol.44Issue(15)：3069-3077,9.
籼稻不同定位群体抽穗期和株高的QTL比较研究
Mapping of Quantitative Trait Loci for Heading Date and Plant Height in Two Populations of Indica Rice
摘要
Abstract
[Objective]Analysis of quantitative trait loci (QTLs) for heading date, plant height and yield traits and identification of QTLs having pleiotropism on plant height and yield traits but insignificant effect on heading date would facilitate the rice improvement for high-yielding potential. [Method] Two recombinant inbred line populations of indica rice were constructed using restorer line Milyang 46 as the common male parent and maintainer lines Xieqingzao B and Zhenshan 97B as the female parents, respectively. The two populations were planted in a trial site in multiple years for the detection of QTLs for heading date and plant height. [Result] A total of 12 QTLs for heading date and 11 QTLs for plant height were detected, among which only two QTLs for heading date locating on the short arm of chromosome 6 and the pericentromeric region of chromosome 7 were found in both populations. In comparison with QTLs for yield traits previously detected in the two populations, six QTL regions showing pleiotropic effects were found. Included are one controlling heading date, plant height and yield traits, three controlling heading date and yield traits, and two controlling plant height and yield traits. [Conclusion] In related to the common parent Milyang 46, the maintainer lines Xieqingzao B for dwarf-abortive cytoplasmic male sterility and Zhenshan 97B for wild-abortive cytoplasmic male sterility differ greatly in the genetic control of heading date and plant height, especially in plant height. QTL qPH2 in the interval RM6-RM240 on the long arm of chromosome 2 is of great potential in practicing the "higher in dwarf" approach to increase rice yield, since it showed a consistent effect on plant height and yield traits with insignificant effect on heading date.关键词
水稻/数量性状座位(QTL)/抽穗期/株高/产量性状Key words
Oryza sativa L./ quantitative trait locus/ heading date/ plant height/ yield traits引用本文复制引用
张振华,郭梁,朱玉君,樊叶杨,庄杰云..籼稻不同定位群体抽穗期和株高的QTL比较研究[J].中国农业科学,2011,44(15):3069-3077,9.基金项目
中国超级稻项目(2010-6)、国家,"863"计划项目(2009AA101101) （2010-6）
