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.
出处
《烟草科技》
EI
CAS
北大核心
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)
关键词
烟草
青枯病菌
大蒜
提取物
抑制作用
Tobacco
Ralstonia solanacearum
Garlic
Extract
Inhibition
