小麦地方品种穗发芽抗性QTL分析
首发时间:2015-12-01
摘要:穗发芽作为一种气候灾害,严重制约着小麦的稳产和高产性。挖掘抗穗发芽基因,培育抗穗发芽品种可以从根本上解决这一问题。本研究以白粒、易感穗发芽的推广品种京411与红粒、高抗穗发芽的地方品种红芒春21构建的RILs群体(176个家系)为试验材料,利用亲本间多态性标记(202个)分析其基因型。结合2014和2015年发芽指数(GI)和田间自然发芽率(FS)表型数据,利用完备区间作图法检测到4个效应值较大且稳定的QTL 位点,分别位于小麦染色体2A、3D、6B和7A上,可解释8.75~ 74%的表型变异,其中2A染色体上QTL对穗发芽抗性综合效应最大,6B染色体综合效应最小。
关键词: 小麦 穗发芽 数量性状基因座 地方品种
For information in English, please click here
QTL analysis for Pre-harvest sprouting resistance in wheat landrace
Abstract:Pre-harvest sprouting limits the consistent production of high quality wheat in wheat regions of the world. A population of 176 recombinant inbred lines (RILs) from the wheat cross 'Jing411(white, PHS-susceptible)/Hongmangchun21(red, PHS-resistant)' were used as the mapping population to detect quantitative trait loci (QTLs) associated with germination index (GI), sprouting in field (FS) in different years. Four stable QTLs linked with PHS traits were mapped on wheat chromosomes 2A、3D、6B and 7A in different years , they can explained from 8.8~ 74.0% of the phenotypic variation. Among them, QTL on 2A chromosome appeared the most significant influence on PHS than QTL on 3D, 6B, and 7A chromosome.
Keywords: Wheat Pre-harvest sprouting QTL Landrace
论文图表:
引用
No.4665002111554414****
同行评议
共计0人参与
勘误表
小麦地方品种穗发芽抗性QTL分析
评论
全部评论0/1000