新疆枣上链格孢菌(Alternaria alternata)对戊唑醇、异菌脲和咪鲜胺的敏感性  

Sensitivity of Alternaria alternata from Ziziphus jujube in Xinjiang to tebuconazole,iprodione and prochloraz

作　　者：宋月凤 王静茹 国立耘 赵思峰[4] 朱小琼 SONG Yuefeng;WANG Jingru;GUO Liyun;ZHAO Sifeng;ZHU Xiaoqiong(College of Plant Protection,China Agricultural University,Key Laboratory of Pest Monitoring and Green Management,Ministry of Agriculture and Rural Affairs,Beijing 100193;Liaocheng Branch of Shandong Agricultural Radio and Television School;Public Service Bureau of Hebei Xiong’an New Area Management Committee;College of Agronomy,Shihezi University)

机构地区：[1]中国农业大学植物保护学院,农业农村部作物有害生物监测与绿色防控重点实验室,北京100193 [2]山东省农业广播电视学校聊城市分校 [3]河北雄安新区管理委员会公共服务局 [4]石河子大学农学院

出　　处：《中国果树》2023年第5期88-92,共5页China Fruits

基　　金：国家科技支撑计划(2011BAD48B00)。

摘　　要：链格孢引起的黑斑病是新疆枣上危害严重的病害。采用菌丝生长速率法测定了47株互隔链格孢(Alternaria alternata)对戊唑醇、异菌脲和咪鲜胺的敏感性。结果表明,3种杀菌剂均可抑制链格孢菌的菌丝生长,EC_(50)平均值分别为(1.010±0.691)、(0.764±0.178)、(0.776±0.421)μg/mL。戊唑醇、异菌脲和咪鲜胺的EC_(50)频数分布均呈单峰曲线,其平均EC_(50)值可以作为敏感基线。皮尔森相关性分析显示,戊唑醇与异菌脲、咪鲜胺及咪鲜胺与异菌脲对链格孢菌株的抑制效果之间的相关系数分别为0.327、0.084、0.161。综上所述,3种杀菌剂之间不存在交互抗药性,因此,生产中可以将3种杀菌剂交替使用。Black spot caused by A.alternata is a severe disease on jujube in Xinjiang.In this study,we tested the sensitivity of A.alternata to tebuconazole,iprodione and prochloraz by the mycelium growth rate method.The result showed that these three fungicides could effectively inhibit mycelium growth of A.alternata;the average EC_(50) for tebuconazole,iprodione,prochloraz were(1.010±0.691)μg/mL,(0.764±0.178)μg/mL and(0.776±0.421)μg/mL,respectively.The EC_(50) frequency distribution of tebuconazole,iprodione and prochloraz showed a unimodal curve.Therefore,their mean EC_(50) value could be used as baseline sensitivity of A.alternata to iprodione and prochloraz,respectively.Pearson correlation coefficients between tebuconazole and iprodione,prochloraz,and between iprodione and prochloraz are 0.327,0.084 and 0.161,respectively.In conclusion,there was no cross-resistance among the three fungicides.Therefore,the three fungicides could be used alternately in this disease management.

关 键 词：枣 链格孢 戊唑醇 异菌脲 咪鲜胺 敏感性 相关性 

分 类 号：S436.629[农业科学—农业昆虫与害虫防治]