近年来植物免疫的研究已引起人们广泛的兴趣,应用病毒、细菌、真菌以及其病原体和非病原体的代谢物作为诱导因子、使宿主植物获得对病害的整体免疫,国外在烟草、梨、苹果、菜豆、黄瓜、马铃薯等作物上已有成功的报道,其中以烟草的工作较多。国内有关免疫诱导的研究目前尚处于起步阶段,陈延熙等曾对苹果的免疫诱导取得一定结果。哈密瓜疫霉病是 In recent years, the research of plant immunity has aroused widespread interest. By using viruses, bacteria, fungi and their pathogenic and non-pathogenic metabolites as inducing factors, host plants can get overall immunity to diseases. In foreign countries, tobacco, pear, apple, Beans, cucumbers, potatoes and other crops have been successfully reported, of which tobacco work more. Domestic research on immune induction is still in its infancy, Chen Yanxi and other had on the immune induction of apple to achieve some results. Hami melon blight is