| 中草药提取物对桃褐腐菌（Monilinia fructicola）抑制作用增效组合筛选 |
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| 引用本文： | 冯哓元,孔 苗,李文生,姜微波.中草药提取物对桃褐腐菌（Monilinia fructicola）抑制作用增效组合筛选[J].中国农学通报,2005,21(12):292-292. |
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| 作者姓名： | 冯哓元 孔 苗 李文生 姜微波 |
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| 作者单位： | （1北京市农林科学院林业果树研究所，北京100093；2中国农业大学食品科学与营养工程学院） |
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| 摘 要： | 用菌丝生长速率法测定了虎杖、黄柏、厚朴、松萝等4种中草药提取物对桃褐腐菌的抑制作用，经线性回归计算50%抑制时的有效浓度（EC50）分别为133.8μg/ml、40.6μg/ml、90.6μg/ml、3.4μg/ml。根据EC50，用等效线法相加作用线的6等分点设置配比，共毒因子法判断增效标准。结果表明，各种配比的混配剂中黄柏+松萝为最佳增效作用组合，其中以8：1增效作用最显著。
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| 关 键 词： | EC50 中草药提取物 增效作用 桃褐腐病菌 菌丝生长抑制率 |
Screening of Combined Chinese Herb Extracts for the Fungitoxicity against Monilinia fructicola |
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| Xiaoyuan Feng,Miao Kong,Wensheng Li,Weibo Jiang.Screening of Combined Chinese Herb Extracts for the Fungitoxicity against Monilinia fructicola[J].Chinese Agricultural Science Bulletin,2005,21(12):292-292. |
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| Authors: | Xiaoyuan Feng Miao Kong Wensheng Li Weibo Jiang |
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| Institution: | (1Institute of Forestry and Pomology，Beijing Academy of Agriculture and Forestry Sciences， Beijing 100093
2College of Food Science and Nutritional Engineering, China Agricultural University，Beijing 100094) |
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| Abstract: | Inhibitory effect of Chinese herb extracts Polygonum cuspidatum，phellodendron Chinese schneid，Magnolia officinalis，Usnea longissima Ach. were determined by the growth rates of mycelium of Monilinia fructicola in vitro. By line regression，50% of Effective Concentration (EC50) of Chinese herb extracts were 133.8μg/ml, 40.6μg/ml, 90.6μg/ml and 3.4μg/ml respectively. According to EC50，the five ratios were determined by the evidence of six equal-part points of additive action line, and synergism was judged by the method of co-toxicity factor. The result showed that the plant extracts of phellodendron Chinese schneid and Usnea longissima Ach. with combined ratio of 8:1were the best mixtures for controlling M. fructicola. |
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| Keywords: | EC50zz Chinese herb extractszz synergismzz Monilinia fructicolazz inhibitory rateszz |
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