| 三种羧酸酰胺类杀菌剂对黄瓜疫霉菌不同发育阶段的影响及其敏感性测定 |
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| 引用本文： | 朱书生,陈磊,卢晓红,李健强,刘西莉.三种羧酸酰胺类杀菌剂对黄瓜疫霉菌不同发育阶段的影响及其敏感性测定[J].农药学学报,2010,12(2):168-172. |
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| 作者姓名： | 朱书生 陈磊 卢晓红 李健强 刘西莉 |
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| 作者单位： | 1.中国农业大学 农学与生物技术学院,北京 100193 |
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| 基金项目： | 国家自然科学基金，"十一五"国家科技支撑计划项目，中国博士后科学基金 |
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| 摘 要： | 离体条件下测定了3种羧酸酰胺类(Carboxylic acid amides,CAAs)杀菌剂氟吗啉、烯酰吗啉和异丙菌胺对黄瓜疫霉菌不同生长发育阶段的抑制作用。结果表明,3种杀菌剂抑制黄瓜疫霉菌休止孢萌发的EC50值分别为0.54,0.46和 0.34 μg/mL;抑制菌丝生长的EC50值分别为0.92,0.70和0.67 μg/mL;抑制孢子囊形成的EC50值分别为0.48,0.31和0.26 μg/mL。但对游动孢子的释放、游动及休止孢的形成均没有抑制作用。氟吗啉、烯酰吗啉和异丙菌胺抑制田间采集的供试菌株菌丝生长的平均EC50值分别为1.09(±0.24),0.29(±0.04)和0.32 (±0.07) μg/mL,供试菌株对3种杀菌剂的敏感性均呈正态分布,未检测到抗药性菌株的存在。
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| 关 键 词： | 氟吗啉 烯酰吗啉 异丙菌胺 黄瓜疫霉菌 生物活性 敏感基线 |
| 收稿时间： | 2010/1/13 0:00:00 |
| 修稿时间： | 2010/4/26 0:00:00 |
Effect of three carboxylic acid amide fungicides on different life stages of Phytophthora melonis and determination of the sensitivities |
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| ZHU Shu-sheng,CHEN Lei,LU Xiao-hong,LI Jian-qiang and LIU Xi-li.Effect of three carboxylic acid amide fungicides on different life stages of Phytophthora melonis and determination of the sensitivities[J].Chinese Journal of Pesticide Science,2010,12(2):168-172. |
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| Authors: | ZHU Shu-sheng CHEN Lei LU Xiao-hong LI Jian-qiang and LIU Xi-li |
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| Institution: | 1.Department of Plant Pathology,College of Agronomy and Biotechnology,
China Agricultural University,Beijing 100193,China2.Key Laboratory of Agricultural Biodiversity for Plant Disease Management,Ministry of Education,Key Laboratory of Plant pathology,Yunnan Agricultural University,Kunming 650201,China |
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| Abstract: | The effect of three carboxylic acid amides fungicides on different life stages of Phytophthora melonis was investigated.The results indicated that flumorph,dimethomorph and iprovalicarb could effectively inhibit cystospore germination (with EC50 values of 0.54,0.46,0.34 μg/mL,respectively),mycelial growth (with EC50 values of 0.92,0.70,0.67 μg/mL,respectively) and sporangia production (with EC50 values of 0.48,0.31,0.26 μg/mL,respectively) of P.melonis.But they had no effect on the zoospores release,zoospore motility and the formation of cystospore.The mean EC50 values of flumorph,dimethomorph and iprovalicarb to mycelium growth of P.melonis strains isolated from fields were 1.09(±0.24),0.29(±0.04),and 0.32(±0.07) μg/mL,respectively.And the baseline sensitivities of the three fungicides were distributed as unimodal curves.No resistant subpopulation was detected among these strains. |
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| Keywords: | flumorph dimethomorph iprovalicarb Phytophthora melonis bioactivity sensitivity baseline |
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