八宝景天叶乙醇提取物的抑真菌活性

[方法]采用菌丝生长速率法研究了八宝景天叶乙醇提取物对9种植物病原真菌的抑制作用,同时采用菌丝生长速率和孢子萌发2种方法测定其对玉米弯孢病菌的抑菌活性。[结果]在质量浓度为200 g/L时,对9种植物病原真菌均有一定的抑制作用,且抑制率均达75%以上,其中对玉米弯孢病菌的抑制作用最强,抑制率为82.27%,对其孢子萌发的抑菌活性高于对其菌丝生长的抑菌活性,EC50值分别为74.18、66.53 g/L。[结论]八宝景天叶有着良好的抑菌效果,具有很好的开发价值。

The Antifungal Activities of Ethanol Extract from Sedum spectabile Boreau Leaves

[Methods] Based on the ethanol extract of leaves of Sedum spectabile Boreau,this research studied the inhibition effect on 9 kinds of plant pathogens with mycelial growth rate method.And antifungal activity of Curvulavia lunata was tested using mycelial growth rate method and spore germination method.[Results] At 200 g/L,it had some inhibitory effects on 9 kinds of plant pathogenic fungis,and inhibitory rates were more than 75%.One of the most inhibitions was on Curvulavia lunata,and inhibition rate was 82.27%.The antibacterial activity of its spore germination was higher than its hypha growth,EC50 were 74.18 and 66.53 g/L respectively.[Conclusions] The leaves of S.spectabile Boreau have an excellent antifungal activity and promising development value.