Abstract
Anthracnose symptoms were frequently observed on fruits of peach trees grown in Yeongi in Korea during disease survey in August from 2000 to 2005. The disease incidence was as high as 40% at its maximum in the orchards investigated. A total of 24 isolates of Colletotrichum species were obtained from the anthracnose symptoms, out of which 20 were identified as Colletotrichum gloeosporioides and the four remaining ones as C. acutatum based on their morphological and cultural characteristics. Two isolates of each C. gloeosporioides and C. acutatum caused anthracnose symptoms on the fruits by both wound and unwound inoculation, which were similar to those observed in the orchard. The symptoms appeared more rapidly by the wound inoculation than by the unwound inoculation. There was no difference in pathogenicity between the C. gloeosporioides and C. acutatum isolates tested. In Korea, only C. gloeosporioides has been recorded as the causal fungus of anthracnose of peach tree. This is the first report that C. acutatum also causes anthracnose of peach tree in Korea.
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