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

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。

Abstract: 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.