水稻花时性状的QTL定位  

Mapping QTLs for Flowering Time in Rice

作　　者：万国[1,2,3] 冯跃[1] 张凤娇 徐群[1] 王一平[1] 袁筱萍[1] 余汉勇[1] 彭锁堂[2] 

机构地区：[1]中国水稻研究所/国家水稻改良中心/国家水稻生物学重点实验室,浙江杭州310006 [2]山西农业大学,农学院,山西太谷030801 [3]枣强县农业局,河北衡水053100 [4]东平县新湖镇人民政府农业服务中心,山东泰安271507

出　　处：《核农学报》2013年第5期562-567,共6页Journal of Nuclear Agricultural Sciences

基　　金：农业部作物种质资源保护项目(NB2011-2130135-27);中央级公益性科研院所专项资金资助项目(2012RG002-7);浙江省重点科技创新团队项目(2010R50024-16)

摘　　要：选用早花时粳稻品种WAB368-B-2-H2-HB和晚花时粳稻品种六千辛杂交获得的F2群体284个单株作为作图群体,采用复合区间作图方法,利用117个具有多态性的SSR标记对水稻花时性状进行数量性状基因座(QTL)检测。研究结果表明,F2花时性状呈连续的正态分布,表现为由多基因控制的数量性状。共检测到4个影响花时的QTL,分别位于第1、1、10和12染色体上,增效等位基因均来自早花时亲本WAB368-B-2-H2-HB。其中位于第12染色体RM511-RM519区间的qFT-12可解释11.3%的表型变异,该位点值得进一步研究和利用。Using an F2 population including 284 individuals derived from a cross between two japonica rice WAB368-B- 2-H2-HB with early flowering and Liuqianxin with late flowering, the quantitative trait loci （QTLs） for flowering time of rice were identified by composite interval mapping using 117 SSR markers. The flowering traits exhibited a continuous normal distribution in F2 population, indicating that the flowering traits were quantitative traits controlled by multiple genes. Four QTLs conferring flowering traits were detected on chromosomes 1, 1, 10 and 12, respectively, and their positive alleles came from early flowering parent WAB368-B-2-H2-HB. qFT- 12 in the interval RM511-RMS19 explained 11.3% of the phenotypic variance, which is worthy of further studies and utilization.

关 键 词：水稻 花时 数量性状基因座 

分 类 号：S511[农业科学—作物学]