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在湖北省公安县、湖南省华容县、江西省瑞昌市对 17个早稻品种进行了抗感纹枯病的性能评比 ,结果表明 :嘉育 948(病指 7.86 )、中辐 95 5 (15 .99)在湖北公安表现出较好的抗性 ;浙辐 910 (13.3)、中组 1号 (15 .7)、HB14(15 .8)、中辐 95 5 (16 .0 3)、9818(16 .5 )在江西瑞昌表现出较好抗性。鉴于中组 1号、9818、988在瑞昌表现抗病 (平均病指 17.37) ,在公安表现为感病 (平均病指 34.94) ,而 944和浙 92 48在瑞昌表现为感病 (平均病指41.0 0 ) ,在公安表现为抗病 (均病指 19.6 8) ,说明稻纹枯病菌的群体致病力存在显著地域性差异。
Seventeen early rice varieties were evaluated for resistance to Rhizoctonia solani in Gong’an County in Hubei Province, Huarong County in Hunan Province and Ruichang City in Jiangxi Province. The results showed that: .99) showed good resistance in Hubei Public Security Bureau. There was no significant difference between the two groups (P <0.05) (16.5) showed good resistance in Ruichang, Jiangxi Province. In view of the fact that No. 1 and No. 9818,988 in Zhongchang showed disease resistance in Ruichang (average disease index of 17.37), they were susceptible in public security (mean disease index: 34.94), while 944 and Zhejiang 92 48 were susceptible Disease index 41.0%), which showed resistance in the public security system (mean disease index 19.68), indicating that there were significant regional differences in the pathogenicity of populations of R. solani.