粳稻品种(系)抗稻瘟病特性分类的研究

用日本７个粳型单基因鉴别菌系将黑龙江省的一些粳稻品种（系）初步划分为８个抗性基因型：砦１号型、ＰｉＮｏ．４、Ｚｅｎｉｔｈ型、福锦型、杜稻型、下北型、关东５１号型、爱知旭型；根据供试品种（系）对黑龙江省四个优势小种的反应，将其划分为８个抗性类群，用日本鉴别菌系鉴定属于同一类群的品种，而用黑龙江省优势小种鉴定又被划分为不同类群，这说明同一抗性类型的品种可能含有相同的抗性基因，也可能含有不同的抗性基因。此外，在供试的粳稻品种（系）中没有发现对黑龙江省优势小种呈全抗反应类型的品种（系）。

STUDY ON THE CLASSIFICATION OF RICE BLAST RESISTANCE IN HEILONGJIANG JAPONICA RICE VARIETIES AND LINES

On the baisis of the reaction patterns,the Heilongjiang Japonica rice varieties and lines are divided into eight resistance genotypes with seven Japanese differential strains.They are Kanto51 type,Aichiasahi type,Zenith type,Toridel type,piNo.1 type,Fukunishiki type,To-to type and Shimokita type.The donor varieties and lines are also inoculated with four Heilongjiang dominant races.According to their reaction patterns,they are classified into eight groups.But varieties or lines of some groups identified with Japanese differential strains may belong to different groups when they are tested with Heilongjiang dominant races.This suggests that varieties of the same group may have identical or different genes.In addition,no one completely resistant variety to Heilongjiang dominant races is found in the donor Japonica rice varieties and lines.