大蒜粗提物对烟草青枯病菌的室内抑制作用测定  

Inhibitory Effects of Garlic Extracts on Ralstonia solanacearum in Laboratory

作　　者：张汉千 赖荣泉[1,2,3] 陈志敏[4] 曾文龙[1,2] 钟秀金[1,2] 

机构地区：[1]福建省烟草公司龙岩市公司,福建省龙岩市西安南路52号364000 [2]福建省烟草农业科学研究所龙岩分所,福建省龙岩市西安南路52号364000 [3]福建农林大学应用生态研究所,福州市金山福建农林大学350002 [4]福建农林大学生物农药与化学生物学教育部重点实验室,福州市金山福建农林大学350002

出　　处：《烟草科技》2009年第3期62-64,共3页Tobacco Science & Technology

基　　金：国家烟草专卖局项目"龙岩市优质烟叶生产科技示范基地建设"(110200401002);中国烟草总公司福建省公司项目"间套种大蒜对烟草病虫害的控制作用及其化感作用研究"(闽烟科2008[13]号)

摘　　要：在实验室测定了大蒜乙醇和水提取物对烟草青枯病菌的抑菌效果。结果表明:大蒜提取物均对烟草青枯病菌有明显的抑制作用,且随大蒜提取物浓度的增大而增强;大蒜乙醇提取物对烟草青枯菌的抑制作用优于大蒜水提取物。0.2、0.3和0.4 g/mL浓度的大蒜乙醇提取物对烟草青枯病菌的抑制率分别为65.56%、69.26%、75.93%;0.3和0.4 g/mL浓度的大蒜水提取物的抑制率分别为61.85%和72.59%;大蒜水与乙醇提取物的有效抑制中浓度分别为0.14和0.08 g/mL。因此,可尝试以大蒜为原料研制植物保护剂来防治烟草青枯病。The indoor experiment was conducted to study the control effects of ethanol and water extracts from garlic on Ralstonia solanacearum. The results showed that garlic extracts could effectively inhibit Ralstonia solanacearum, the inhibition effects improved with the extracts＇ concentration, particularly the ethanol extract. The inhibition rates of ethanol extracts at the concentrations of 0. 2, 0. 3 and 0. 4 g/mL were 65.56% , 69.26% and 75.93% , respectively; while those of water extracts at the concentrations of 0.3 and 0.4 g/mL were 61. 85% and 72. 59%, respectively; and the EC50 of water and ethanol extracts were 0.14 g/mL and 0.08 g/mL, respectively. Therefore, garlic might be used as a source of plant protectant in Ralstonia solanacearum control.

关 键 词：烟草 青枯病菌 大蒜 提取物 抑制作用 

分 类 号：S482.292[农业科学—农药学]