华南农业大学学报2017，Vol.38Issue(5)：56-60,5.DOI:10.7671/j.issn.1001-411X.2017.05.010
3种三唑类杀菌剂对映体对镰刀菌的选择性活性
Selective bioactivity of enantiomers of three triazole fungicides against Fusarium spp.
摘要
Abstract
[Objective] To study the activities of enantiomers of three triazole fungicides against Fusarium spp..[Method] Three chiral fungicides included tebuconazole,myclobutanil and difenoconazole.The activities of fungicide enantiomers against F.moniliforme,F.proliferatum and F.graninearum were assessed by mycelial growth rate method,respectively.The EC50 values of enantiomers were analyzed.[Result] The activities of different enantiomers against three kinds of Fusarium spp.were different.The activity of (-)-tebuconazole was higher than (+)-tebuconazole,and the EC50 difference of two enantiomers was 32-208 times.The inhibitory activity of (+)-myclobutanil was higher than (-)-myclobutanil,and the EC50 difference of two enantiomers was 1.4-6.4 times.(2R,4R)-difenoconazole showed the maximum activity among four enantiomers of difenoconazole,and the EC50 difference of four enantiomers was 3.7-15.5 times.[Conclusion] For Fusarium spp.,the activities of three fungicides show selective difference.(-)-tebuconazole,(+)-myclobutanil and (2R,4R)-difenoconazole show higher activities.These results might contribute to screening higher active fungicides and reducing the use of pesticides.关键词
手性农药/三唑类杀菌剂/对映体/镰刀菌/杀菌活性/立体选择性Key words
chiral pesticide/triazole fungicide/enantiomer/Fusarium spp./fungicidal activity/enantioselective分类
农业科技引用本文复制引用
李纳,张丽阳,刁雪,闭贤凤,刘承兰..3种三唑类杀菌剂对映体对镰刀菌的选择性活性[J].华南农业大学学报,2017,38(5):56-60,5.基金项目
国家自然科学基金(31371959) （31371959）
