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白粉病（Erysiphegraminisf．sp．tritici）是小麦的主要病害之一，选育抗病品种目前依然是最为经济、安全和有效的防治途径之一。随着分子生物学研究手段的不断发展，已对小麦白粉病抗性基因Pm4A等进行了RAPD分子标记研究。同抗病基因紧密连锁的分子标记具有非常重要的理论和
Powdery mildew (Erysiphegraminisf.sp.tritici) is one of the major diseases of wheat. Breeding of resistant varieties is still one of the most economical, safe and effective prevention and treatment methods. With the continuous development of molecular biology research methods, the wheat powdery mildew resistance gene Pm4A and other RAPD molecular markers have been studied. Molecular markers closely linked to disease-resistance genes have very important theories and implications