摘要
Abstract
The antifungal activities of alcohol extracts from 19 plants against Ceratocystis paradoxa,Pestalotiopsis theae and Sclerotinia sclerotio-rum were determined by growth rate method.The results showed that:Inhibition rate against Ceratocystis paradoxa of 4 plant extracts were above 60％when their concentration was 10 mg/mL.They were Michelia alba(97.29％),Ficus abelii(96.99％),Chrysanthemum indicum(93.12％)and Eucalyptus(74.21％),and their median effective concentration(EC50)were 3.414 5,3.568 6,3.618 6,4.395 6 mg/mL,re-spectively,while the remaining 15 plant extracts were below 60％.Inhibition rate against Pestalotiopsis theae of 4 plant extracts were above 60％when their concentration was 10 mg/mL.They were Michelia alba(79.65％),Ficus abelii(74.12％),Chrysanthemum indicum(70.81％)and Eucalyptus(64.29％),and their EC50 were 4.448 5,4.581 2,4.864 7,6.360 6 mg/mL,respectively,while the remaining 15 plant extracts were below 60％.Inhibition rate against Sclerotinia sclerotiorum of 4 plant extracts were above 60％when their concentration was 10 mg/mL.They were Chrysanthemum indicum(76.06％),Eucalyptus(75.95％),Michelia alba(66.27％)and Ficus abelii(65.85％),and their EC50 were 4.613 6,4.460 9,5.163 2,5.511 4 mg/mL,respectively,while the remaining 15 plant extracts were below 60％.The alcohol extracts from Mich-elia alba,Ficus abelii,Chrysanthemum indicum and Eucalyptus had good antifungal activities against Ceratocystis paradoxa,Pestalotiopsis theae and Sclerotinia sclerotiorum.关键词
植物提取物/抑菌活性/植物病原真菌Key words
Plant extract/Antifungal activities/Phytopathogenic fungi分类
化学化工
