普通小麦“宁7840×Clark”RIL群体抗条锈病QTL分析(英文)

被引:5
作者
李春莲 [1 ]
靳凤 [1 ]
张芸芸 [1 ]
赵朋 [1 ]
王中华 [1 ]
柏贵华 [2 ,3 ]
机构
[1] 不详
[2] 旱区作物逆境生物学国家重点实验室/西北农林科技大学农学院
[3] 不详
[4] 美国堪萨斯州立大学农学系
[5] 美国农业部农业服务中心堪萨斯州曼哈顿市硬冬小麦遗传研究所
[6] 不详
关键词
小麦; 条锈病; 抗病基因; QTL;
D O I
暂无
中图分类号
S512.1 [小麦];
学科分类号
摘要
为了解小麦条锈病抗病基因在染色体上的位置,对源自小麦杂交组合宁7840×Clark的重组自交系(RIL)群体进行了抗条锈病QTL分析。结果表明,在染色体1BS上检测到一个主效的QTL即QYr-hwwg-1B。该QTL由抗病亲本宁7840提供,位于SNP标记Xsnp3620和Xsnp5435之间,区间长度为2.5cM,可解释55.8%的表型变异。根据宁7840的小种抗性推测QYr-hwwg-1B可能是由来自1B/1R易位系的抗病基因Yr9引起的。抗性基因Yr9、Yr10、Yr15、Yr24、Yr26、YrH52和YrAlp均位于小麦1B染色体短臂的一端,形成一个抗条锈基因簇,并与SSR标记Xgwm11紧密连锁。另外,有56个SNP标记与该标记区间共分离,可以用于小麦抗条锈基因精细定位图谱的构建及分子标记辅助选择育种。
引用
收藏
页码:157 / 163
页数:7
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