Journal article

Pathotypes of Colletotrichum capsici, the Causal Agent of Chili Anthracnose, in Thailand

P Montri, PWJ Taylor, O Mongkolporn



Eleven isolates of Colletotrichum capsici were screened on nine chili genotypes derived from four cultivated species of Capsicum: Capsicum annuum, C. baccatum, C. chinense, and C. frutescens. Host reactions were assessed 9 days after inoculation by microinjection of spores into the pericarp of red fruit. A set of disease scales, with 0 to 9 scores, were developed for anthracnose infection of each Capsicum sp. based on percent lesion size in relation to fruit size, appearance of necrotic or water-soaked tissue, and presence of acervuli. Three pathotypes, PCc1, PCc2, and PCc3, were identified according to differential qualitative infection of fruit of C. chinense genotypes PBC932 and C04714. P..

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University of Melbourne Researchers


Funding Acknowledgements

We thank the National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency for financial support for a Master's student scholarship and other project support. Field experiments were supported by the Tropical Vegetable Research Center, Kaset-sart University, Kamphaeng Saen Campus.