~(60)Coγ射线照射小麦条锈菌夏孢子,使其萌发率显著降低,其剂量效应曲线符合一次击中模型S=e~(-λD)。以照射后夏孢子接种感病小麦叶片,其潜育期延长,病叶率和严重度降低,产孢量显著减少,寄主-病原物相互关系变为非亲和性的低反应型。 ~ (60) Co γ -ray irradiation of wheat stripe rust spores, so that the germination rate was significantly reduced, the dose-response curve with a hit model S = e ~ (-λD). After inoculation with summer spores, inoculation of susceptible wheat leaves, the latent period was prolonged, the rate and severity of diseased leaves were reduced, the amount of sporulation significantly reduced, and the host-pathogen relationship became a non-affinity low-response type.