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白叶枯病是中国水稻的主要病害之一。1980—1984年作者用广东省稻白叶枯病菌优势菌群Ⅳ群的代表菌株,进行大田人工剪叶接种,重复鉴定了国内外水稻品种资源2012份。接种20天后调查病级,评选出Ⅰ级抗源29份占1.44％,Ⅱ级抗源187份占9.29％,Ⅲ级抗源285份占14.17％,感病(Ⅳ—Ⅵ级)的有1511份占75.1％。对33个重点抗源进行抗性鉴定和经济性状分析,推荐一批单抗、双抗或三抗的抗源给育种者作为抗病育种亲本选配应用。
Bacterial blight is one of the major diseases of rice in China. In 1980-1984, the author used artificial leaf-cutting inoculation with representative strains of dominant bacterial group Ⅳ of the bacterial blight in Guangdong Province, and repeated identification of 2012 rice varieties at home and abroad. Twenty-four days after inoculation, 29 strains of I-class antigens were accounted for 1.44%, 187 strains of II-class antigens accounted for 9.29%, 285 strains of Ⅲ-class antigens were 14.17%, and 15 of 11 (Ⅳ-Ⅵ) A share of 75.1%. The resistance identification and economic traits analysis of 33 key antigens were recommended. A batch of anti-breeder, double or triple anti-breeder resistant breeders was recommended as a matching parent for disease-resistant breeding.