Caracterización Morfológica, Cultural y Patogénica de Aislados de Colletotrichum Sp. Produciendo Antracnosis En Mango (Mangifera Indica L.)

Anthracnose is considered the main fungal disease affecting mango. It causes considerable damage to leaves, flowers and fruits. Filamentous fungi of the genus Colletotrichum and its teleomorph Glomerella are considered the most widely distributed plant pathogens worldwide, causing this disease. In this research, 22 isolates of the genus Colletotrichum were obtained from different localities in the western region of the country, on six varieties of mango. The cultural characterization was diverse in the growth of colonies on PDA, with presence and absence of exudations at different temperatures, being 24 degrees the optimum for growth. The sexual phase observed in some isolates showed few perithecia. The concentration of conidia varied between 107 and105 measured in Neubauer's chamber while the appressoria and conidia are within the ranges for Colletotrichumgloeosporiodes species. Variability in pathogenicity showed that all mango species investigated are susceptible to the microorganism. Statistical analysis showed grouping of isolates by locality with similar pathogenic characteristics.