辽宁省玉米白斑病病原菌的生物学特性及防治药剂的筛选 Click here to download the full text Citation：张丹,李星来,宋露,李文玲,孟威,肖淑芹,王珍,郑晓霞,张万民,薛春生.辽宁省玉米白斑病病原菌的生物学特性及防治药剂的筛选.Journal of Plant Protection,2026,53(4):1033-1040 Hits: Download times: Author Name Affiliation E-mail Zhang Dan  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China    Li Xinglai  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China    Song Lu  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China    Li Wenling  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China    Meng Wei  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China    Xiao Shuqin  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China    Wang Zhen  Fengcheng Agricultural and Rural Development Service Center, Fengcheng 118100, Liaoning Province, China    Zheng Xiaoxia  Fengcheng Agricultural and Rural Development Service Center, Fengcheng 118100, Liaoning Province, China    Zhang Wanmin  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China  2406839372@qq.com  Xue Chunsheng  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China  chunshengxue@syau.edu.cn  中文摘要:为有效防控辽宁省玉米白斑病，室内测定辽宁省玉米白斑病优势病原菌宽颈附球菌Epicoccum latusicollum的生物学特性和5种常用药剂（275 g/L氟唑菌酰羟胺·丙环唑、18.7%丙环·嘧菌酯、40%唑醚·戊唑醇、17%唑醚·氟环唑和40%苯醚甲环唑）对其的室内毒力，并测定这5种药剂对玉米白斑病的田间防效。结果显示：宽颈附球菌菌株FC1-2菌丝生长的最佳碳源、氮源为麦芽糖、蛋白胨，最适培养基为玉米叶粉培养基，最适温度为25℃，最适pH为7，最适光环境为全光照。在5种药剂中，275g/L氟唑菌酰羟胺·丙环唑和17%唑醚·氟环唑对宽颈附球菌的毒力最强，EC50分别为0.150 mg/L和1.700 mg/L；40%唑醚·戊唑醇、40%苯醚甲环唑和18.7%丙环·嘧菌酯的毒力次之，EC50分别为2.258、3.196和6.930 mg/L。在5种药剂中，275 g/L氟唑菌酰羟胺·丙环唑和17%唑醚·氟环唑对玉米白斑病的田间防效最好，第1次施药后25 d的防效分别为77.97%和70.32%。综上所述，氟唑菌酰羟胺·丙环唑和唑醚·氟环唑可用于防控辽宁省玉米白斑病。 中文关键词:玉米白斑病  宽颈附球菌  生物学特性  毒力  防效   Biological characteristics of the causal agent of maize white spot Epicoccum latusicollum in Liaoning Province and screening of fungicides for disease control Author Name Affiliation E-mail Zhang Dan  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China    Li Xinglai  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China    Song Lu  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China    Li Wenling  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China    Meng Wei  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China    Xiao Shuqin  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China    Wang Zhen  Fengcheng Agricultural and Rural Development Service Center, Fengcheng 118100, Liaoning Province, China    Zheng Xiaoxia  Fengcheng Agricultural and Rural Development Service Center, Fengcheng 118100, Liaoning Province, China    Zhang Wanmin  Liaoning Provincial Plant Protection and Quarantine Station, Shenyang 110034, Liaoning Province, China  2406839372@qq.com  Xue Chunsheng  College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China  chunshengxue@syau.edu.cn  Abstract:To facilitate the effective management of maize white spot in Liaoning Province, the biological characteristics of Epicoccum latusicollum, the dominant pathogen of maize white spot, were investigated. The in vitro toxicity of five commonly used fungicides (275 g/L pydiflumetofen·propiconazole, 18.7% propiconazole·azoxystrobin, 40% pyraclostrobin·tebuconazole, 17% pyraclostrobin·epoxiconazole, and 40% difenoconazole) against E. latusicollum was evaluated, followed by assessment of their field efficacy against maize white spot. The results demonstrated that the optimal carbon source, nitrogen source, culture medium, temperature, pH, and light condition for mycelial growth of strain FC1-2 were maltose, peptone, corn leaf powder agar, 25 ℃, pH 7, and continuous light, respectively. Among the five fungicides, 275 g/Lpydiflumetofen·propiconazole and 17% pyraclostrobin·epoxiconazole exhibited the strongest toxicity against E. latusicollum, with EC50 values of 0.150 mg/L and 1.700 mg/L, respectively. The other three fungicides, 40% pyraclostrobin·tebuconazole, 40% difenoconazole and 18.7% propiconazole·azoxystrobin, showed lower toxicity, with EC50 values of 2.258, 3.196 and 6.930 mg/L, respectively. Among the five fungicides, 275 g/Lpydiflumetofen·propiconazole and 17% pyraclostrobin· epoxiconazole provided the highest field control efficacy against maize white spot, reaching 77.97% and 70.32%, respectively, at 25 days after the first application. In conclusion, pydiflumetofen·propiconazole and pyraclostrobin·epoxiconazole are effective fungicides for control of maize white spot in Liaoning Province. keywords:maize white spot  Epicoccum latusicollum  biological characteristic  toxicity  control effect View Full Text  View/Add Comment  Download reader

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