大蓟提取物对植物病原真菌的抑制活性  

Inhibition Activity of Extracts of Cirsium japonicum DC. on Plant Pathogenic Fungi

作　　者：魏朝霞[1] 杨彩波 和慧[1] 唐嘉义[1] 

机构地区：[1]云南农业大学植物保护学院,生物多样性研究与应用技术国家工程中心,云南昆明650201

出　　处：《云南农业大学学报（自然科学版）》2014年第1期140-143,共4页Journal of Yunnan Agricultural University:Natural Science

基　　金：国家科技部"十一五"科技支撑计划项目(2007BAD58B01)

摘　　要：为了鉴定大蓟中所含成分对植物病原真菌的抑制活性;本研究通过溶剂提取法进行提取,并用生长速率法测定提取物的抑菌活性。结果表明,大蓟提取物对供试的植物病原菌具有一定的抑菌活性,其中50 mg/mL浓度石油醚提取物对石榴枯萎病菌的抑菌活性最高,抑制率达100%,毒力测定EC50为5.1017 mg/mL。In order to identify the components in Cirsium japonicum DC. with inhibitory effect on plant pathogenic fungi, we used solvent extraction method to extract components in C. japonieum DC. , and assayed inhibition activity of extract. The results showed that C. japonieum DC. extracts had certain antimicrobial activity to the tested plant pathogenic fungi, while the antifungal activity of 50 mg/mL petroleum ether extract against Pomegranate fusarium oxysporium was the highest, its inhibition rate reached 100% and EC50 was 5. 101 7 mg/mL.

关 键 词：大蓟 植物提取物 抑菌活性 十字交叉法 EC50 

分 类 号：S482.292[农业科学—农药学]