摘要
为明确河南省苹果轮纹病菌(Botryosphaeria dothidea)对甲基硫菌灵、戊唑醇和吡唑醚菌酯的敏感性,为苹果轮纹病的防治提供理论依据,用菌丝生长速率法测定了河南省60株苹果轮纹病菌对这3种杀菌剂的敏感性。结果表明,苹果轮纹病菌对戊唑醇的敏感性最高,EC50平均值是(1.0551±0.7765) mg/L;甲基硫菌灵次之,EC50平均值是(2.7031±0.9366) mg/L;吡唑醚菌酯最低,EC50平均值是(19.5117±11.8225) mg/L。对EC50值进行相关性分析,可知苹果轮纹病菌对甲基硫菌灵、戊唑醇和吡唑醚菌酯相互之间不存在交互抗性。
The aims are to clarify the sensitivity of Botryosphaeria dothidea to thiophanate-methyl, tebuconazole and pyraclostrobin in Henan Province,and provide a theoretical basis for the effective control of B.dothidea.60B.dothidea strains were isolated from Henan Province,and the mycelium growth rate method was used to detect their sensitivity to the three fungicides.The results showed that B.dothidea had the highest sensitivity to tebuconazole,followed by that to thiophanate-methyl,and the sensitivity to pyraclostrobin was the lowest,with the mean value of the 50%effective concentration values (EC50)as (1.0551±0.7765)mg/L, (2.7031±0.9366)mg/L and (19.5117±11.8225)mg/L,respectively.The correlation analysis of ECso values showed that there was no cross resistance among the three fungicides.
作者
王丽
周增强
侯珲
Wang Li;Zhou Zengqiang;Hou Hui(Zhengzhou Fruit Research Institute,Chinese Academy of Agricultural Sciences,Zhengzhou 450009)
出处
《中国农学通报》
2018年第34期108-112,共5页
Chinese Agricultural Science Bulletin
基金
中央级科研院所基本科研业务费专项(1610192017718)
中央级科研院所基本科研业务费专项(1610922017202)
中国农业科学院科技创新工程(CAAS-ASTIP)
关键词
苹果轮纹病菌
甲基硫菌灵
戊唑醇
吡唑醚菌酯
敏感性
交互抗性
Botryosphaeria dothidea
thiophanate-methyl
tebuconazole
pyraclostrobin
sensitivity
cross resistance
