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小麦白粉病在山东各麦区均有发生,一般造成减产10%~50%,严重制约小麦高产。小麦白粉菌群体的研究常采用毒性鉴定法,通过病原菌对不同抗病基因的毒性频率来监测群体毒性的变异(段霞瑜等,1998)。但寄主对相应毒性基因具有选择性,仅凭毒性频率揭示病菌群体结构存在局限性,而ISSR标记可快速高效地检测出基因组DNA的多态性。贾少锋等(2007)首次构建了小麦白粉菌的IS-
Wheat powdery mildew occurred in all wheat areas in Shandong Province, generally resulting in 10% to 50% reduction, seriously restricting the high yield of wheat. Wheat powdery mildew population often use toxicological identification method, by the pathogenic bacteria of different resistance genes to monitor the frequency of toxicity to the population variation (Duan Xiaoyu et al., 1998). However, the host is selective for the corresponding virulence genes. Only the frequency of virulence reveals the limitations of the population of pathogenic bacteria, and the ISSR marker can rapidly and efficiently detect genomic DNA polymorphisms. Jia Shaofeng et al (2007) for the first time constructed wheat powdery mildew IS-