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为了解我国主要小麦推广品种抗白粉病基因的分布与利用情况,采用分子遗传标记技术,对我国代表性小麦推广品种中Pm2、Pm3、Pm4、Pm6、Pm8、Pm13、Pm21、Pm23等抗病基因进行了分析。结果表明,几乎所有供试品种均含有上述1个或多个抗病基因,部分小麦品种同时携带有4～6个抗病基因;其中携带Pm3、Pm2、Pm8、Pm23和Pm4的频率最高,而Pm13和Pm21等应用潜力较大的抗病基因只分布在少部分品种中。在今后的工作中应该加强新抗源的鉴定和应用的力度。
In order to understand the distribution and utilization of powdery mildew resistance genes in the main wheat varieties in China, molecular genetic markers were used to analyze the resistance genes Pm2, Pm3, Pm4, Pm6, Pm8, Pm13, Pm21 and Pm23 Analyzed. The results showed that almost all the tested cultivars contained one or more of the above resistance genes. Some wheat cultivars also carried 4 to 6 resistance genes at the same time. Among them, Pm3, Pm2, Pm8, Pm23 and Pm4 were the most frequent, Pm13 and Pm21 and other potential applications of the larger resistance genes are only distributed in a small number of species. In the future work should strengthen the identification and application of new anti-source.