Comparison of cross inoculation potential of South African avocado and mango isolates of Colletotrichum gloeosporioides

摘要

Three hundred and eighteen Colletotrichum gloeosporioides isolates from stern-end rot and anthracnose infected avocados as well as from stern-end rot/anthracnose and soft brown rot on mango. were compared using fruit inoculations. Isolates could be categorised according to lesion size and both avocado and mango isolates produced larger lesions when inoculated oil their own hosts. Cross-inoculation potential of these isolates was also compared oil strawberries, peppers. guavas, papayas and citrus. All isolates produced lesions oil all hosts except citrus. Factors Such as area of origin and symptom type from which original isolations were made. could not be correlated with lesion development on these hosts.