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自Cavara报道了病原菌(Pyiculariaoryzae)引起稻瘟病以来,已有将近90年历史。由于此病在世界主要稻区广为流行,所以每年都造成较大的损失。对防治此病,有些国家大量使用杀菌剂使病害暂时减轻,但未能根本解决问题;有些国家虽然选育出大量抗病品种,但抗性维持的时间均不长。因此,关于稻瘟病还有许多问题需要研究 有关稻瘟病的文献很多,可是,病原菌的分类,命名和寄主范围等至今尚未完全弄清楚;病原菌的变异性、细胞学、遗传学和寄主的抗病性等较新问题也有很多争论。特别是抗病品种病原菌的变异性和寄主的抗病性等问题更引人注目。
Nearly 90 years have passed since Cavara reported that Pyricularia oryzae has caused rice blast. As the disease is so prevalent in the world’s major rice-growing areas, it causes a large annual loss. To prevent and cure this disease, in some countries, the use of bactericides in large quantities has alleviated the disease temporarily but failed to solve the problem at all. Although some countries bred a large number of resistant varieties, the resistance maintenance time is not long. Therefore, there are many problems with rice blast. There is a great deal of literature on rice blast. However, the classification, nomenclature and host range of pathogens have not yet been completely elucidated; the variability of pathogens, cytology, genetics and host resistance There are many more controversies about newer issues such as sexuality. Especially the disease-resistant varieties of disease-resistant variability and host resistance and other issues more compelling.