叶锈菌的转主寄主、小麦和禾本科杂草上发生的叶锈病的相互作用叶锈菌在转主寄主上可以完成有性世代，而有性世代往往产生大量的变异和生理分化现象，这样就容易使推广的小麦抗病品种很快地丧失抗病性，因此，转主寄主的存在无疑对我国小麦品种抗叶锈性的保持稳定是一个巨... The main host of the leaf rust fungus, wheat and grass leaf weed occurred on the interaction of leaf rust in the main host leaf rust can complete the sexual generation, and sexual generation often produce a large number of mutations and physiological differentiation, So it is easy to promote the promotion of wheat resistant varieties quickly lose their disease resistance, therefore, the presence of host owners undoubtedly the stability of our wheat varieties resistant to leaf rust is a giant ...