作物学报2012，Vol.38Issue(7)：1339-1345,7.DOI:10.3724/SP.J.1006.2012.01339
12个小麦品种(系)白粉病抗性的遗传分析
Inheritance of Resistance to Powdery Mildew in 12 Wheat Varieties (Lines)
摘要
Abstract
Wheat powdery mildew, caused by the biotrophic parasitic fungus Blumeria graminis (DC.) f. Sp. Tritici E.O. Speer. Is one of the most epidemic diseases in many wheat (Triticum aestivum L.) producing regions in China and other parts of the world. The information on inheritance of resistance to powdery mildew in commercial wheat cultivars is important for controlling the disease and developing new resistant cultivars. In the present study, 17 isolates of B. Graminis were used to analyze test seedling reactions to powdery mildew in 12 wheat varieties (lines). Molecular detection was performed to detect the presence of Pm2 and PmS for powdery mildew resistance. All of the 12 wheat cultivars were resistant to at least 11 isolates tested. Isolates E09, E20, and Bg2 were used to test the F2 populations for analyzing the inheritance of powdery mildew resistance in these wheat varieties (lines). The reactions to different isolates of B. Graminis and analysis of amplification with Pm2-linked marker Xcfd8Ishowed that Pm2 or its allele was most likely present in Liangxing 66, Using ω-secalin gene- and Glu-BI gene-specific markers on chromosome arms IRS and IBS, respectively, the presence of T1BL1RS translocation chromosome carrying PmS was detected in Shan-nong 20 and Zhengmai 9962. Since Pm8 was not effective against most isolates tested in this study, other unknown genes for powdery mildew resistance could be present in Shannong 20 and Zhengmai 9962 in addition to PmS. The reaction patterns of Yanzhan 4110 and Tianmin 668 were identical. The remaining cultivars developed different patterns of reaction to the B. Graminis isolates tested.关键词
小麦/白粉病/抗病基因/遗传分析Key words
Wheat/ Powdery mildew/ Resistance gene/ Inheritance引用本文复制引用
宋凤景,肖明纲,黄江,王晓鸣,朱振东,武小菲,李洪杰..12个小麦品种(系)白粉病抗性的遗传分析[J].作物学报,2012,38(7):1339-1345,7.基金项目
本研究由中央级公益性科研院所基本科研业务费专项(20105),国家现代农业产业技术体系建设项目(CARS-3-1)和国家转基因生物新品种培育重大专项(2009ZX08002-006B)的资助. （20105）
