决明子提取物对植物病原菌的抑菌活性初探

Inhibition Mechanism of Extract of CassiaobtusifoliaL to Plant Pathogens

用中药决明子的乙醇提取物及氯仿提取物对核盘菌(Sclerotinia)、镰刀菌(Fusarium)、柑桔绿霉(Penicillium)、棉花炭疽病菌(ColletotrichumgossypiiSouthw.)等10余种植物病原菌进行抑菌活性筛选研究。结果表明,中药决明子乙醇提取物与氯仿提取物对镰刀菌、弯孢菌、油菜菌核病菌、金黄色葡萄球菌和棉花炭疽病菌都有一定的抑菌作用,其中对油菜菌核病菌和棉花炭疽病菌的抑制效果较好,抑菌率达53%和62%。

To screen the anti-bacteria activity of the extracts from Cassiaobtufolial, the plant pathogen is used such as Sclerotinia, Fusarium, penicillium, Colletotrchum and gossypii Southw et al. The result shows that, the ethanol extract and chloroform extract from Cassiaobtusifolial can inhibit Fusarium, Curvalaria, sclerotiorum, Staphylococcus aureus, and Colletotrichum gosspii Southw to some extent and the inhibition is significant to sclerotiorum and Colletotrichum gossypii Southw, with the anti-bacterial ratio of 53% and 62%.