Antifungal activity of extracts from 13 species of plants against five pathogenic fungi of fruits and vegetables.

Antifungal activity of the ethanol extracts of Baeckea frutescens and other 12 species of plants against Colletotrichum gloeosporioides,C.musae,Fusarium oxysporum,Botrytis cinerea,C.orbiculare were studied in the laboratory by mycelial growth rate method.The results indicated that the ethanol extracts of Pinus massoniana showed inhibition rates of 100 % against C.musae and F.oxysporum in 96 h after treatment with a immersed cream mass concentration of 10 mg·mL-1,while those from B.frutescens revealed inhibition rates of 96.53%,90.20%,90.55%,89.63% and 62.59% on the five species of pathogenic fungi with the same mass concentrations,respectively.The ethanol extracts of Aglaia duperreana and Cinnamomum burmani showed inhibition rates were more than 80% against C.orbiculare.Antifungal activity of essential oil of B.frutescens was tested and the result indicated its notable effect.Their EC50 values of B.frutescens oil against mycelial growth of five pathogenic fungi were 0.104 7,0.137 3,0.122 6,0.046 9 and 0.126 2 mg·mL-1,respectively.