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在生产实践中,利用抗病品种是防治植物病害的一项经济有效的重要措施。品种的抗病性鉴定,抗源筛选目前多采用活菌接种,调查病斑大小作为衡量品种抗病的主要指标。根据植物病原真菌在与寄主相互作用的过程中,可在寄主上产生一种致病毒素(Pa-thotcxin)的物质,这类物质在病害的发生和流行上起重要作用。能否利用这种毒素代替病原活菌筛选抗病品种以及用于其他研究,是目前人们最关心的研究课题之一。作
In production practice, the use of disease-resistant varieties is a cost-effective and important measure to control plant diseases. Disease resistance identification of varieties, resistance screening more live bacteria inoculation, the investigation of lesion size as a measure of the main indicators of disease resistance. According to phytopathogenic fungi in the interaction with the host process, the host can produce a toxin (Pa-thotcxin) substances, such substances play an important role in the occurrence and prevalence of diseases. It is one of the research topics that people are most concerned about whether the use of such toxins instead of pathogenic bacteria to screen resistant varieties and other research purposes. Make