Characterization and chromosomal location of Pm40 in common wheat: a new gene for resistance to powdery mildew derived from Elytrigia intermedium
文献类型： 外文期刊
作者： Luo, P. G. 1 ; Luo, H. Y. 1 ; Chang, Z. J. 3 ; Zhang, H. Y. 1 ; Zhang, M. 1 ; Ren, Z. L. 1 ;
作者机构： 1.Sichuan Agr Univ, State Key Lab Plant Breeding & Genet, Yaan 625014, Sichuan, Peoples R China
2.Univ Elect Sci & Technol China, Sch Life Sci & Technol, Chengdu 610054, Peoples R China
3.Shanxi Acad Agr Sci, Inst Crop Genet, Taiyuan 030031, Shanxi, Peoples R China
关键词： seedling resistance
期刊名称：THEORETICAL AND APPLIED GENETICS （ 影响因子：5.699； 五年影响因子：5.565 ）
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年卷期：
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收录情况： SCI
摘要： Powdery mildew, caused by Blumeria graminis f. sp. tritici, is a very destructive wheat (Triticum aestivum) disease. Resistance was transferred from Elytrigia intermedium to common wheat by crossing and backcrossing, and line GRY19, that was subsequently selected, possessed a single dominant gene for seedling resistance. Five polymorphic microsatellite markers, Xgwm297, Xwmc335, Xwmc364, Xwmc426 and Xwmc476, on chromosome arm 7BS, were mapped relative to the powdery mildew resistance locus in an F-2 population of Mianyang 11/GRY19. The loci order Xwmc426-Xwmc335-Pm40-Xgwm297-Xwmc364-Xwmc476, with 5.9, 0.2, 0.7, 1.2 and 2.9 cM genetic distances, was consistent with published maps. The resistance gene transferred from Elytrigia intermedium into wheat line GRY19 was novel, and was designated Pm40. The close flanking markers will enable marker assisted transfer of this gene into wheat breeding populations.
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