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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (21): 272-275.

• 植物保护 农药 • 上一篇    下一篇

肿柄菊提取物对7种植物病原菌的抑菌作用

郝妮娜   

  • 收稿日期:2011-03-28 修回日期:2011-04-16 出版日期:2011-08-25 发布日期:2011-08-25
  • 基金资助:

    国家自然基金

The Inhibitory Effect of Extract from Tithonia diversifolia on Seven Kinds Plant Pathogens

  • Received:2011-03-28 Revised:2011-04-16 Online:2011-08-25 Published:2011-08-25

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摘要：

为了寻找防治植物病原菌的新型植物源杀菌剂，采集肿柄菊地上部分，分别收集了石油醚、乙酸乙酯、乙醇的提取物，用菌落直径法测定了其对作为靶标生物的7种植物病原菌的抑菌作用。研究结果表明：乙酸乙酯提取物抑菌作用>乙醇提取物>石油醚提取物。在120 h，乙酸乙酯提取物对蚕豆基腐病的效果最好，抑制中浓度(EC50)最低为0.68 mg/mL。因此，肿柄菊次生代谢产物具有一定的开发潜力。

关键词: 贮藏, 贮藏

Abstract:

In order to find a new plant fungicide, the petroleum ether extract, ethyl acetate and ethanol extract from aerial parts of Tithonia diversifolia were isolated. The antifungal activities of seven plant pathogens were measured with the colonies diameter method. The result showed that the order of the antifungal activities was: ethyl acetate extract>the ethanol extract>petroleum ether extract. The effect of ethyl acetate extract against Fusarium avenaceum in 120 h was the best, and the lowest EC50 was 0.68 mg/mL. Therefore, the secondary metabolites of Tithonia diversifolia had some development potential.