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甜瓜抗白粉病基因SRAP分子标记

DOI: 10.3969/j.issn.1000-7091.2013.02.014, PP. 73-77

Keywords: 甜瓜,白粉病,抗病基因,SRAP分子标记

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Abstract:

以抗病资源收集一号和感病农家品种皇后杂交的F1、BCs、BCr、F2以及双亲为材料,苗期进行白粉病抗性鉴定,分析了白粉病抗源收集一号的抗性遗传规律,并利用集团分离分析法结合SRAP标记进行连锁分析。结果表明,收集一号对白粉病Podosphaeraxanthii生理小种1的抗性由显性单基因控制,同时对1600对SRAP引物进行筛选,引物me4em37扩增出的多态性条带与抗病基因表现连锁关系,该多态性片段大小为100bp,与抗病基因遗传连锁距离为17.0cM。

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