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一、前言马铃薯晚疫病菌是一种寄生性较强的真菌,它具有明显的生理分化现象。根据它的寄生专化性,可以分为许多的生理小种,不同的生理小种,对于各种马铃薯品种有不同的毒力。随着马铃薯抗晚疫病育种工作的开展及抗病品种的推广应用,各国先后开展了晚疫病菌生理分化现象的研究。四十多年来,关于这一问题累积了极其丰富的资料。兹将近年来各国存这方面的工作综合介绍于下,希望对我国工作的进行能有所俾益。
I. Introduction Potato Phytophthora infestans is a parasitic fungi, it has obvious physiological differentiation. According to its parasitic specificity, can be divided into many physiological races, different physiological races, for a variety of potato varieties have different virulence. With the development of potato resistance to late blight breeding and the popularization and application of resistant varieties, various countries have carried out studies on the physiological differentiation of late blight pathogens. For over forty years, a wealth of information has accumulated on this issue. In recent years, the work of all countries in this regard will be comprehensively introduced here, hoping to make a difference in the work of our country.