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Position: Home > Articles > Toxicity Assay of Ten Fungicides against Asexual-spores of Ustilaginoidea virens Hubei Agricultural Sciences 2007,46 (2) 239-240+243

十种杀菌剂对稻曲病菌无性孢子的毒力测定

作  者:
李阳;黄俊斌;罗汉钢;张求东;王盛桥
单  位:
湖北省植物保护总站;华中农业大学植物科技学院/湖北省作物病害监测与安全控制重点实验室
关键词:
稻曲病菌;杀菌剂;厚垣孢子;分生孢子;毒力测定
摘  要:
选用10种杀菌剂对稻曲病菌无性孢子进行室内毒力测定的结果表明,20.67%万兴乳油和40%福星乳油对稻曲病菌厚垣孢子和分生孢子的萌发均有较好的抑制效果,其EC50分别为2.217μg·mL-1、2.234μg·mL-1和3.633μg·mL-1、2.656μg·mL-1;10%世高和10%井冈霉素抑制效果相对较差。同一种杀菌剂对稻曲病菌厚垣孢子和分生孢子的抑制效果不同,10%世高对厚垣孢子的EC50为5.612μg·mL-1,对分生孢子的EC50为20.227μg·mL-1;而43%好力克对两种孢子的EC50分别为11.659μg·mL-1和7.185μg·mL-1。
译  名:
Toxicity Assay of Ten Fungicides against Asexual-spores of Ustilaginoidea virens
作  者:
LI Yang1,HUANG Jun-bin1,LUO Han-gang2,ZHANG Qiu-dong2,WANG Sheng-qiao2(1.College of Plant Science and Technology,Huazhong Agricultural University/Hubei Provincial Key Lab of Plant Pathology,Wuhan 430070,China;2.General Plant Protection Station of Hubei Province,Wuhan 430070,China)
关键词:
Ustilaginoidea virens;fungicides;chlamydospore;conidia;toxicity assay
摘  要:
Toxicity of ten fungicides to asexual-spores of Ustilaginoidea virens were studied.The result showed that 20.67% Flusilazole-famoxadone and 40% Flusilazole had the greatest inhibition against asexual-spores germination among ones tested,the 50% effective concentration(EC50) value was 2.217 μg·mL-1,2.234 μg·mL-1 and 3.633 μg·mL-1,2.656 μg·mL-1 to chlamydospore and conidia,respectively.Through fungicides testing,the same fungicides exhibited different inhibition to chlamydospore germination and conidia germination.The toxicity of 10% Difenoconazole to chlamydospore and conidia with EC50 5.612 μg·mL-1 and 20.227 μg·mL-1,respectively;43% Tabuconazole had lower inhibition to chlamydospore with EC50 11.659 μg·mL-1,whereas,good toxicity to conidia with EC50 7.185 μg·mL-1.

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