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Pm23: a new allele of Pm4 located on chromosome 2AL in wheat

文献类型： 外文期刊

作者： Hao, Yuanfeng 1 ; Liu, Aifeng 2 ; Wang, Yuhai 1 ; Feng, Deshun 1 ; Gao, Jurong 1 ; Li, Xingfeng 1 ; Liu, Shubing 1 ; Wang 1 ;

作者机构： 1.Shandong Agr Univ, Natl Key Lab Crop Biol, Taian Subctr, Coll Agron,Natl Wheat Improvement Ctr, Tai An 271018, Shandong, Peoples R China

2.Shandong Acad Agr Sci, Inst Crop Res, Jinan 250100, People

期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）

ISSN： 0040-5752

年卷期： 2008 年 117 卷 8 期

页码：

收录情况： SCI

摘要： Powdery mildew, caused by Blumeria graminis f. sp. tritici, is one of the major diseases of common wheat (Triticum aestivum) worldwide. The powdery mildew resistance gene Pm23, identified in the common wheat Line 81-7241 and originally assigned to wheat chromosome 5A, was relocated on chromosome 2AL with the aid of molecular markers. Mapping of microsatellite markers in two wheat crosses segregating for Pm23 and Pm4b, respectively, in combination with the reported mapping of Pm4a, indicated that the three genes were all linked to the marker Xgwm356 with a distance of 3-5 cM. Allelism between Pm4b and Pm23 was then confirmed, when the progenies of a cross between VPM1 (Pm4b) and Line 81-7241, were shown to be all resistant to a B. graminis isolate avirulent to the both parents. Pm23 is therefore a new allele of the Pm4 locus, and was redesignated as Pm4c.

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