【摘要】 研究了马缨丹(Lantanacamara)叶提取物及其酚类化合物对水葫芦(Eichhorniacrassipes)生长及其生理生化指标的影响.结果表明,马缨丹鲜叶水提物对水葫芦生长有明显的抑制作用.在较高浓度(>30gFW.L-1)下6d可使水葫芦整株干枯死亡.经过高效液相色谱分离确定马缨丹水提物含有7种酚类化合物,分别为水杨酸、龙胆酸、雷琐酸、香豆素、阿魏酸、对羟基苯甲酸和6-甲基香豆素,在马缨丹鲜叶水提液中的浓度分别为50.95、13.46、5.28、3.36、2.92、2.19和0.34mg.L-1.7种化合物的混合物对水葫芦抑制程度最大,其次为水杨酸,再次为6-甲基香豆素、香豆素,对羟基苯甲酸对水葫芦也有明显的抑制作用,而龙胆酸、雷琐酸、阿魏酸对水葫芦的抑制作用较小.更多还原

【Abstract】 This paper studied the effects of Lantana camera fresh leaves aqueous extract and its contained phenolic compounds on the growth and physiologic-biochemical indexes of Eichhornia crassipes. The results showed that this extract had obvious inhibitory effects on the growth and development of E. crassipes. Wh en the concentration was higher than 30 g FW·L -1 ,it could kill E. crassipe s after 6 days treatment. A total of seven phenolic compounds in the abstract were identified by HPLC,which were salicylic acid,gentisic acid,β-resorcyli c acid ,coumarin,ferulic acid,p-hydroxybenzoic acid and 6-methyl coumarin,with the concentrations being,50.95,13.46,5.28,3.36,2.92,2.19 and 0.34 mg·L -1 ,respectively. The mixture of the seven compounds had the strongest inhibitory effect,followed by salicylic acid,6-methyl coumarin,coumarin,and p-hydroxybenzoic acid,while the effects of β-resorcylic acid and gentisic acid were not significant.更多还原