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采用菌丝生长速率法测定了7种龙舌兰属植物提取物对胶孢炭疽病病菌(Colletotrichum gloeosporioides)和香蕉炭疽病病菌(Calletotrichum musae)的抑菌活性。结果表明,在质量浓度10、5 mg/m L下处理72 h,7种龙舌兰属植物提取物对两种炭疽病病菌均有很强的抑菌活性。其中,H.11648、广西76416、有刺番麻和番麻对两种炭疽病病菌抑菌率均为100%,普通剑麻、粤西114和灰叶剑麻对两种炭疽病病菌抑菌率为77.78%~100%。毒力测定表明,有刺番麻对胶孢和香蕉炭疽病病菌抑菌效果最显著,有效中浓度(EC_(50))分别为0.027 7 mg/m L和0.048 2 mg/m L,其次是广西76416,有效中浓度(EC_(50))分别为0.093 4 mg/m L和0.240 9 mg/m L。
The mycelium growth rate method was used to determine the antibacterial activities of seven agave extracts against Colletotrichum gloeosporioides and the pathogen Calletotrichum musae. The results showed that seven kinds of agave extracts had strong antibacterial activities against two anthracnose pathogen pathogens at the mass concentration of 10,5 mg / m L for 72 h. Among them, H.11648, Guangxi 76416, Prickly heat and Prunus mume on the two kinds of anthracnose pathogenic bacteria were 100% inhibition rate, common sisal, western Guangdong 114 and gray sisal to two anthracnose pathogenic bacteria Rate of 77.78% ~ 100%. The results of virulence test showed that the inhibitory effect of Pricklyash would not only be the most effective, but also the effective medium concentration (EC 50) was 0.027 7 mg / m L and 0.048 2 mg / m L, respectively Guangxi 76416 and the effective medium concentration (EC 50) were 0.093 4 mg / m L and 0.240 9 mg / m L, respectively.