【摘要】 柑橘溃疡病是柑橘生产中最为严重的细菌性病害之一，可对柑橘产量和品质造成巨大影响。抗性诱导剂作为绿色防治生物病害的重要工具，其研究与应用日益受到关注。探究抗性诱导剂东莨菪内酯(SC)和瑞香素(DA)用于防治柑橘溃疡病的作用效果。结果表明，东莨菪内酯和瑞香素对柑橘溃疡病菌没有直接作用；经东莨菪内酯和瑞香素处理8～24 h,柑橘抗性相关防御酶POD、 PAL和CAT的活性高于对照，具有诱导激活柑橘免疫系统，提高柑橘抗性的作用；田间试验中，东莨菪内酯处理对柑橘溃疡病的防治效果为62.07%,瑞香素处理对柑橘溃疡病的防治效果为75.86%;东莨菪内酯和瑞香素处理后溃疡病病情指数增长减慢，有效延缓了溃疡病蔓延，具有一定的防治效果。更多还原

【Abstract】 Citrus canker disease is one of the most serious bacterial diseases in citrus production. Green controlwith resistance-inducer is an important means of biological control of the disease. In this study, we mainly investigated the effect of Scopoletin and Daphnetin on the control of citrus canker disease.The effects of Scopoletin and Daphnetin on the citrus canker pathogens and the activity of citrus defense enzymes were detected by setting clear water treatment as the control. The results showed that Scopoletin and Daphnetin had no direct inhibition effect on Xanthomonas citri subsp. citri. The enzyme activities of POD, PAL, and CAT were significantly elevated after treatment with Scopoletin and Daphnetin compared to controls at 8-24 hours post-treatment, suggesting these compounds may induce and activate the immune response in citrus plants, thereby enhancing their resistance.In the field test, the control effect of Scopoletin treatment on citrus canker disease reached 62. 07% and that ofDaphnetin treatment was 75.86%;Scopoletin and Daphnetin treatment slowed down the growth of the canker disease index and effectively slowed down the spread of canker disease, which has a certain preventive effect.更多还原