Abstract: [Objective] To explore the antibacterial function of lavender essential oil and its antibacterial effect on plant pathogenic fungi in order to provide the basis for the development of natural antibacterial agents.[Method]The antibacterial activity of lavender essential oil was studied by the method of mycelial growth rate, which was applied to 6 plant pathogenic fungi.[Result]Under the volume fraction of 5 μL/mL, the lavender essential oil was treated with a total of 5 d, which had an inhibitory effect on cotton Rhizoctonia solani, Alternaria alternata and Alternaria solani(EllisetMartin)Jonesetgrout.The results showed that the content of the essential oil was 100;.The minimum inhibitory concentration (MIC) determinations showed that the inhibitory effects of lavender essential oil on 6 kinds of tested bacteria from strong to weak were cotton Rhizoctonia solani, Alternaria alternata, Alternaria solani(EllisetMartin)Jonesetgrout, Pyricularia oryzac Cavgra, Verticillium dahliae Kleb and Fusarium oxysporum.[Conclusion]Lavender essential oil has a good inhibitory effect on plant pathogenic fungi, so, good application potential will be found in pesticide application.

摘要： [目的]研究薰衣草精油在抑菌方面的功能,对植物病原真菌的抑菌作用,为天然抗菌剂的开发提供依据.[方法]以薰衣草精油作为天然抑菌剂,采用菌丝生长速率法,测定其对6种植物病原真菌的抑菌作用.[结果]在体积分数5.0 μL/mL下薰衣草精油处理5 d,对棉花立枯丝核菌、小麦黑胚病菌、番茄早疫病菌具有100;的抑制作用.最低抑菌浓度(MIC)测定显示,薰衣草精油对6种供试菌抑制作用从强到弱分别是棉花立枯丝核菌、小麦黑胚病菌、番茄早疫病菌、水稻稻瘟病菌、棉花黄萎病菌、棉花枯萎病菌.[结论]薰衣草精油对植物病原真菌具有良好的抑制作用,在农药应用中有较好的应用潜力.