苦参对辣椒枯萎病的抑菌活性

[目的]探讨苦参对辣椒枯萎病的抑菌活性。[方法]采用生长速率法和悬滴法测试不同溶剂、浓度苦参提取物对辣椒枯萎病菌的抑制作用。[结果]乙酸乙酯与丙酮提取苦参所得粗提物的抑菌率显著高于乙醇。随着苦参乙酸乙酯粗提液浓度的增大,其对枯萎病病菌菌丝生长及孢子萌发抑制作用均显著增强;在质量浓度为40 g/L时,其对辣椒枯萎菌菌丝生长、孢子萌发抑制率分别达到94.48%、89.01%。[结论]苦参根中所含活性物质对辣椒枯萎病的抑菌活性较强,具有进一步研究开发的价值。

Antifungal Activity of Sophora flavescens extracts against Capsicum Blight ( Fusarium oxysporum )

[Objective]The paper was to explore the antifungal activity of Sophora flavescens extracts against capsicum blight.[Method]Growth rate method and suspend-drop method were used to measure different solvents and concentrations of S.flavescens extracts against capsicum blight.[Result]The inhibition rate of crude extracts of S.flavescens extracted from ethyl acetate and acetone was significantly higher than ethanol.With the increasing concentration of ethyl acetate crude extracts of S.flavescens,its inhibition effect against mycelial growth and spore germination of Fusarium oxysporum significantly increased.When the mass concentration was 40 g/L,its inhibition rates against mycelial growth and spore germination of capsicum blight were 94.48% and 89.01%,respectively.[Conclusion]The active substance contained in S.flavescens roots had strong inhibition activity against capsicum blight,which had the potential value for further research and development.