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从实验室300多株水稻白叶枯菌株中挑选127株(云南省菌株和国内标准菌株),用含不同抗病基因的水稻近等基因系品种IRBB5、IRBB4、IRBB3、IRBB14、IRBB1和IR24作为鉴别品种。根据供试菌株与供试鉴别品种的互作反应,分为15个小种,标记为1～15。其中2,5,7,8为优势小种,6,10,11,14,15为云南特有小种类型,大理优势小种为2、7,丽江优势小种为7,保山优势小种为7、8、12,玉溪优势小种为2、8,红河优势优势小种为5。结果表明小种的分布受地理区域的影响。
127 strains (Yunnan strains and domestic standard strains) were selected from more than 300 strains of rice bacterial blight in laboratory. The rice near-isogenic lines IRBB5, IRBB4, IRBB3, IRBB14, IRBB1 and IR24 with different resistance genes were selected as Identification of varieties. According to the interaction between the tested strains and the cultivars tested, they were divided into 15 races and labeled as 1-15. Among them, 2, 5, 7 and 8 were the dominant races, while 6, 10, 11, 14 and 15 were the endemic races of Yunnan. The dominant races of Dali were 2, 7 and the dominant races of Lijiang were 7, 7,8,12, Yuxi advantage race 2,8, Red River advantage advantage race 5. The results show that the distribution of races is affected by the geographical area.