Abstract: Postharvest pathogenic fungi were iolated and identified from "Sannian" mango from Yuanjiang county of China’s Yunnan province. By the filter paper dispersion method,the antimicrobial effects of 25 kinds of plants extracts by water or ethanol on the pathogenic fungi were investigated respectively. The results showed that the four pathogenic fungi are Colletotrichum gloeosporioides Penz.,Diplodia mangiferae,Macrophoma mangiferae Hingoroai & Sharma and Phompsis mangiferae Ahmad. The extracts with antimicrobial effects on Colletotrichum gloeosporioide sPenz.are 100 g/L water extract of Coptis chinensisF ranch,100 g/L water extract of Alpinia officinarum Hance,6.25 g/L ethanol extract of Forsytia suspense (Thunb.)Vahl,50 g/L ethanol extract of Eugenia caryophyllata Thumb. and 25 g/L ethanol extract of Pogostemon cablin Benth; 100 g/L water extract of Stemona jacponica (Bl.) Miq and 12.5 g/L ethanol extract of Pogostemon cablin Benth have antimicrobial effects on Diplodia mangiferae; 12.5 g/L ethanol extract of Forsytia suspense (Thunb.) Vahl,25 g/L ethanol extract of Pogostemon cablin Benth and 50 g/L ethanol extract of Eucalyptus globulus Labill have antimicrobial effects on Macrophoma mangiferae Hingoroai & Sharma; 25 g/L ethanol extract of Forsytia suspense (Thunb.)Vahl,50 g/L ethanol extract of Eugenia caryophyllata Thumb. and 6.25 g/L ethanol extract of Pogostemon cablin Benth have antimicrobial effects on Phompsis mangiferae Ahmad.

Key words: mango, postharvest pathogen, pathogenic fungi, antibiosis, plant material extracts