Effects of temperature on appressorium formation and pathogenicity of Colletotrichum coffeanum strains

Abstract

The optimum temperature for germination of conidia of Colletotrichum coffeanum strains was between 15 and 25 degrees C. Germination of the conidium started by the formation of a clear pseudoseptum in the centre. Appressoria were formed between 5 and 30 degrees C. High percentage berry infection and active sporulation for all strains was obtained at 15, 20 and 25 degrees C.