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采用菌丝生长速率法监测了1984、2001和2010年江苏省小麦纹枯病菌Rhizoctoniacerealis对井冈霉素的敏感性变化趋势,以及2010年河南、安徽和山东3省小麦纹枯病菌对井冈霉素的敏感性现状。结果表明:1984、2001和2010年江苏省小麦纹枯病菌对井冈霉素的EC50值范围分别为0.31～0.87、0.05～1.21和0.20～1.09μg/mL,26年间江苏省小麦纹枯病菌对井冈霉素的敏感性未发生显著性变化;2010年河南、安徽和山东3省小麦纹枯病菌对井冈霉素的EC50值范围分别为0.15～1.16、0.43～0.90和0.09～1.33μg/mL,4省小麦纹枯病菌对井冈霉素的敏感性相互间差异不显著。井冈霉素仍然可以作为防治小麦纹枯病的主要药剂。
The mycelial growth rate method was used to monitor the sensitivity of Rhizoctonia realis to Jinggangmycin in Jiangsu province during 1984, 2001 and 2010, and the effects of Rhizoctonia cerealis on Jinggangmycin in 2010, Henan, Anhui and Shandong provinces, Susceptibility of the status quo. The results showed that the EC50 values of validamycin against Jingjingmycin in Jiangsu Province in 2001, 2001 and 2010 ranged from 0.31 to 0.87, from 0.05 to 1.21 and from 0.20 to 1.09 μg / mL, respectively. During the 26 years, The sensitivity to validamycin did not change significantly. In 2010, EC50 values of Rhizoctonia solani against Jingjingmycin in Henan, Anhui and Shandong provinces were 0.15 ~ 1.16, 0.43 ~ 0.90 and 0.09 ~ 1.33μg / mL, the sensitivity to Jinggangmycin among the four wheat sheath blight bacteria was not significantly different from each other. Jinggangmycin can still be used as the main agent to control wheat sheath blight.