中国水稻科学2013，Vol.27Issue(2)：122-128,7.DOI:10.3969/j.issn.1001-7216.2013.02.003
特大粒水稻材料粒型性状的QTL检测
Identification of QTL for Rice Grain Traits Based on an Extra-Large Grain Material
摘要
Abstract
Two hundred and forty recombinant inbred lines (RIL) derived from a cross between japonica rice TD70 (with 1000-grain weight of 80 g in 2011) and Kasalath, and its linkage map including 141 SSR markers was used to map QTL controlling grain shape traits (grain length, grain width, grain thickness) in 2010 and 2011. 18 QTLs controlling the three grain shape traits were detected on chromosomes 2, 3, 5, 7, 9 and 12, respectively, including 5 QTLs for grain length, 6 QTLs for grain width and 7 QTLs for grain thickness. Seven QTLs, namely qGL3. 1 , qGW2, qGW2.2, qGW5. 1 , qGW5. 2, qGT2. 3 and qGT3. 1 were detected in two years and explained 56. 19%, 4.42%, 29.41%, 10. 37%, 7. 61%, 21. 19% and 17. 06% of the observed phenotypic variance, respectively. The marker interval RM1347 -RM5699 on chromosome 2 was common marker intervals of grain length, grain width and grain thickness;qGL3, 1 , qGT3. 1 were mapped in the same interval RM6080 - RM6832 on chromosome 3. All of the 18 QTLs alleles were derived from the large grain parent TD70. Most of the QTLs are cloned genes and some mapped QTLs. Three QTLs, qGL2. 2 on chromosome 2, qGW9 and qGT9 on the chromosome 9 may be new sites.关键词
水稻/特大粒/重组自交系/粒型/数量性状基因座Key words
rice/ extra-large grain/ recombinant inbred lines/ gram shape/ quantitative trait locus分类
生物科学引用本文复制引用
张亚东,张颖慧,董少玲,陈涛,赵庆勇,朱镇,周丽慧,姚姝,赵凌..特大粒水稻材料粒型性状的QTL检测[J].中国水稻科学,2013,27(2):122-128,7.基金项目
国家自然科学基金资助项目(31271678) （31271678）
江苏省农业科技自主创新基金资助项目(CX[11]4023) （CX[11]4023）
农业部长江中下游稻区超级粳稻新品种选育研究与示范项目. （）
