小麦白粉病菌闭囊壳萌发及其对三唑酮敏感基线的建立  

Germination of the cleistothecium of Blumeria graminis on wheat and its establishment of sensitive base line to triadimefon

作　　者：袁善奎[1] 马严明[1] 周明国[1] 

机构地区：[1]南京农业大学农业部病虫监测与治理基础实验室,南京210095

出　　处：《植物保护》2001年第1期1-3,共3页Plant Protection

摘　　要：在没有甾醇脱甲基抑制剂 (DMI)类药剂用药历史的湖北利川山区麦田采集小麦白粉病菌闭囊壳 ,带回室内萌发 ,从每样本单孢子堆中分离得到 6 1个野生菌株。采用叶段法测得每个菌株的EC50 ,建立起小麦白粉病菌对三唑酮的相对敏感基线EC50 =(0 10 90± 0 0 0 48) μg/ml。Cleistothecia of powdery mildew were collected from the mountainous areas in Lichuan of Hubei where never used fungicides of demethylation inhibitor to control wheat disease. Sixty one single pustule isolates were gained by infected leaf segments with ascospores from different cleistothecia. The EC 50 of triadimefon to every isolate on the detached leaf segments was determined in laboratory and the average EC 50 was (0 109 0±0 004 8) μg/ml. It was thought as sensitive base line of the Blumeria graminis f. sp. tritici to triadimefon.

关 键 词：小麦 白粉病菌 三唑酮 敏感基线 闭囊壳 萌发 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]