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本文研究了万寿菊根提取物中西瓜枯萎病菌的抑菌活性成分及其抑菌作用机理。结果表明,在4类主要化学物质中,精油类含量最高(59.8%),且抑菌效果最佳;10mg/mL精油提取物的抑制率在24、36和48h分别为62.83%,58.31%和56.30%。在西瓜枯萎病的3个主要发病期(苗期、伸蔓开花期和座果期)施用精油提取液,能有效抑制西瓜枯萎病菌,促进植株生长,同时提高西瓜植株的POD和SOD酶活性,并维持CAT活性,有效减轻了西瓜枯萎病菌对植株的毒害作用。
In this paper, the antifungal activity of Fusarium oxysporum f. The results showed that among the four main chemical substances, the content of essential oil was the highest (59.8%), and the antibacterial effect was the best. The inhibition rates of 10mg / mL essential oil extracts were 62.83%, 58.31% and 56.30%. Watermelon blight wilt disease in the three main stages (seedling stage, flowering and fruit stage) the application of essential oil extract can effectively inhibit Fusarium oxysporum f. Pathogen, promote plant growth, while improving watermelon POD and SOD activity, And maintain CAT activity, effectively reducing the watermelon Fusarium oxysporum poisoning effect on plants.