| 烟草黑胫病菌对7种杀菌剂的敏感性 |
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| 引用本文： | 朱流红,安启菲,吴轶凡,龙友华,赵赞伟,尹显慧.烟草黑胫病菌对7种杀菌剂的敏感性[J].贵州大学学报(农业与生物科学版),2016(1):18-22. |
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| 作者姓名： | 朱流红 安启菲 吴轶凡 龙友华 赵赞伟 尹显慧 |
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| 作者单位： | 1. 贵州大学 作物保护研究所,贵州 贵阳,550025;2. 毕节市烟草公司大方县分公司,贵州 大方,551600 |
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| 基金项目： | 中国烟草总公司贵州省公司科技项目“大方县烤烟病虫害生物防治技术推广应用”(201425)；中国烟草总公司贵州省公司科技项目“前茬除草剂残留对烤烟生长影响及削减技术研究”(201508)。 |
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| 摘 要： | 采用7种杀菌剂对烟草黑胫病菌室内毒力,并通过对比EC_(50)的方法得出烟草黑胫病菌的抗性水平。结果表明:在7种杀菌剂中,1%的申嗪霉素SC对烟草黑胫病菌的毒力最强,其EC_(50)值为0.0684μg/m L;其次为40%氟硅唑EC,EC_(50)值为0.1276μg/m L。70%丙森锌WP对烟草黑胫病菌的毒力最差,其EC_(50)值为85.4334μg/m L。根据结果得出烟草黑胫病菌对1%的申嗪霉素SC和40%氟硅唑EC表现敏感且抗性水平范围均小于1μg/m L;对70%丙森锌WP已达到高抗水平且抗性水平范围大于100μg/m L。
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| 关 键 词： | 烟草黑胫病 杀菌剂 毒力测定 敏感性 |
Determination on Sensitivity of Phytophthora Nicotianaeto Seven Fungicides |
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| Abstract: | The toxicity of seven fungicides against Phytophthora nicotianaewere determined by colony diameter method in laboratory, and the resistance level was evaluated by the method of contrast EC50 of Phytophthora nicotianae. The results showed that 1% phenazino -1- carboxylic acid SC gave the best toxicity against P. nicotianae, whose EC50 value was 0. 068 μg/mL. The second one was 40% flusilazole EC, whose EC50 value was 0. 1276 μg/mL. The worst effect was ob﹣tained from 70% propineb WP , whose EC50 value was 85.4334μg/mL. Therefore, 1% phenazino-1-carboxylic acid SC and 40% flusilazole EC were effective for P. nicotianae prevention, and the resistance level were less than 1μg/mL. Al﹣so, 70% propineb WP demonstrated a high resistance level, and the resistance level was greater than100 μg/mL. |
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| Keywords: | Phytophthora nicotianae Fungicides Toxicity determination Sensitivity |
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