摘要
加拿大蓬挥发油对植物、细菌、真菌均有生物活性。对受体植物种子萌发、幼苗生长主要表现为抑制,但对胡萝卜幼根生长促进作用明显,100μL处理下其根长为对照的1.61倍。加拿大蓬挥发油对受试食源性细菌和真菌有良好的广谱抗菌作用,其中对痢疾志贺氏菌、人参立枯病、人参黑斑病病原菌抑菌效果显著。采用GC/MS分析了加拿大蓬挥发油成分,其主要成分为萜烯类物质,其中具有化感潜力的柠檬烯相对含量超过50%。
The volatile oil of Conyza canadensis（L.）Cronq. had significant bioactivity on fungi,some food-borne pathogens and plants. It could enhance the length of major root of Daucus carota var. sativa L.,that cultured under the 100 μL volatile oil treatment was 1.61 times as much as that of the control treatment. And the main effect of this oil on germination and seedling growth was inhibition. The antimicrobial test results show that this essential oil had significant broad spectrum of antimicrobial activity against all 6 food-borne pathogens and 2 fungi tested. Especially,Shigella dysenteriae,Alternaria panax Whetz and Rhizoctonia solani were most sensitive to it. The chemical composition of the oil could be identifi ed satisfactorily by GC/MS analyses. The essential oil of C. canadensis was dominated with terpene,the relative amount of limonene was more than 50%.
出处
《农药》
CAS
北大核心
2010年第11期801-803,827,共4页
Agrochemicals
基金
国家自然科学基金项目(30870252)
吉林省主要外来入侵植物种的生态危害及其资源化研究(20050547)
关键词
人参立枯病
人参黑斑病
种子萌发
幼苗生长
食源性细菌
GC/MS
化感作用
Alternaria panax Whetz
Rhizoctonia solani
germination
seedling growth
food-borne pathogens
GC/MS analyses
allelopathy
