小麦种质N9134抗白粉病基因的SSR标记和染色体初步定位(英文)

被引：15

作者：

王长有

吉万全

张改生

王秋英

蔡东明

薛秀庄

机构：

[1] 西北农林科技大学农学院

来源：

作物学报 | 2007年 / 01期

关键词：

小麦(Triticum aestivum); 野生二粒小麦; 抗白粉病基因; 微卫星标记; 染色体定位;

D O I：

暂无

中图分类号：

S512.1 [小麦];

学科分类号：

摘要：

普通小麦种质N9134含有野生二粒小麦AS846的抗白粉病基因,该种质对陕西省关中地区白粉病流行小种关中4号表现高抗。用高感小麦白粉病的普通小麦品种陕160和陕优225与N9134杂交,F1代对白粉病表现高抗,F2代抗病和感病植株的比例符合3∶1,表明N9134苗期白粉病抗性由1对完全显性基因控制,暂定名为PmAS846。采用66个小麦SSR引物对2个抗感分离群体共176个单株进行分析,发现引物WMS37、WMS67和WMS213的扩增产物在抗感植株DNA池间存在多态性。经分离群体验证,抗病基因PmAS846与小麦染色体5BL上的微卫星位点Xgwm67连锁,遗传距离为20.6 cM,表明PmAS846可能位于5BL上。

引用

页码：163 / 166

页数：4

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