河北省小麦叶锈菌不同生理小种对三唑酮的敏感性分析与田间验证
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Citation：靳雨晴,宋茂兴,王浩宇,刘园霞,殷姝新,闫成燚,吴志会,王海燕.河北省小麦叶锈菌不同生理小种对三唑酮的敏感性分析与田间验证.Journal of Plant Protection,2026,53(2):409-418
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Author NameAffiliationE-mail
Jin Yuqing Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Song Maoxing Tangshan Academy of Agricultural Sciences, Tangshan 063001, Hebei Province, China  
Wang Haoyu Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Liu Yuanxia Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Yin Shuxin Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Yan Chengyi Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Wu Zhihui Tangshan Academy of Agricultural Sciences, Tangshan 063001, Hebei Province, China wzh406@sina.cn 
Wang Haiyan Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China ndwanghaiyan@163.com 
中文摘要:为明确河北省小麦叶锈菌Puccinia triticina不同生理小种对三唑酮的敏感性，于2023—2024年从河北省9个地区采集感叶锈病的小麦样品，采用单孢分离法进行叶锈菌分离，利用鉴别寄主进行生理小种的鉴定，采用孢子萌发抑制法测定生理小种对三唑酮的敏感性，对比分析分离自河北省不同地区的生理小种对三唑酮的抗性差异以及对三唑类药剂的交互抗性，并选用6种常用杀菌剂进行田间防治效果验证。结果表明：共分离获得193株小麦叶锈菌菌株，鉴定到12个生理小种，其中THTT和PHTT为主要流行小种。三唑酮对供试菌株的EC50介于5.09～51.04μg/mL之间，确定其敏感基线为8.07μg/mL，敏感菌株占比为97.41%，仅发现5株抗性菌株，主要来自邯郸市与石家庄市，应列为抗药性重点关注区域。未发现小麦叶锈菌对三唑酮与相同机制的戊唑醇、己唑醇存在显著交互抗性。田间防治效果验证试验结果表明25%吡唑醚菌酯悬浮剂防治效果最佳且持效期长，可作为防治河北省小麦叶锈病的首要选择；44%三唑酮悬浮剂防治效果最差，建议谨慎使用。
中文关键词:小麦叶锈菌  三唑酮  敏感性监测  抗药性  田间防治效果
 
Sensitivity analysis and field validation of triadimefon against wheat leaf rust races in Hebei Province
Author NameAffiliationE-mail
Jin Yuqing Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Song Maoxing Tangshan Academy of Agricultural Sciences, Tangshan 063001, Hebei Province, China  
Wang Haoyu Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Liu Yuanxia Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Yin Shuxin Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Yan Chengyi Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China  
Wu Zhihui Tangshan Academy of Agricultural Sciences, Tangshan 063001, Hebei Province, China wzh406@sina.cn 
Wang Haiyan Hebei Technology Innovation Center for Biocontrol of Crop Diseases and Insect Pests, College of Plant Protection, Hebei Agricultural University, Baoding 071000, Hebei Province, China ndwanghaiyan@163.com 
Abstract:To clarify the sensitivity of different physiological races of Puccinia triticina（Pt） in Hebei Province to triadimefon, samples of wheat infected with Pt were collected from nine regions in Hebei Province from 2023 to 2024. Single-spore isolation was employed to isolate Pt strains, test hosts were used to identify the physiological races, and the spore germination inhibition method was adopted to determine the sensitivity of physiological races to triadimefon. The resistance differences of physiological races to triadimefon across different regions in Hebei Province were compared, their sensitivity to this fungicide was monitored, and the cross-resistance of different triazole fungicides was investigated, followed by field validation. The results showed that a total of 193 Pt strains were isolated, and 12 physiological races were identified, with THTT and PHTT being the prevalent races. The EC50 of triadimefon against the tested strains ranged from 5.09 to 51.04 μg/mL, and the sensitivity baseline was established as 8.07 μg/mL. Sensitive strains accounted for 97.41% of the total, with only five resistant strains detected, primarily from Handan City and Shijiazhuang City, which should be designated as key areas for fungicide resistance monitoring. No significant cross-resistance was observed between triadimefon and other fungicides sharing the same mechanism of action, including tebuconazole and hexaconazole. Field efficacy trials were conducted to test six commonly used fungicides, demonstrating that 25% pyraclostrobin suspension concentrate exhibited the best control effect with a long duration, making it the preferred fungicide for control. In contrast, 44% triadimefon suspension concentrate exhibited the poorest control efficacy and is recommended for cautious use.
keywords:wheat leaf rust  triadimefon  sensitivity monitoring  fungicide resistance  field control efficacy
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