The resistance of nine mango cultivars were evaluated when inoculated with the fungus C. fimbriata. The patogen was isolated from mango branches with disease symptons. Inoculations were made in branches, at the leaf attachment point, by means of a stiletto containing the mycelium. Evaluations of the symptons were made periodically. The fungus development was measured by the tissue darkening, in centimeters, around the inoculation point. It wars observed that in Coquinho, Haden 2H, Adams and Manila I cultivars, the fungus developed rapidly, reaching the branch extreme, causing its death. In 'Keitt', 'Sensation' and 'Irwin' the fungus development was little, while in the Kent cultivar it was limited to the inoculation point. In relation to 'Tommy Atkins', the results were not conclusive because some plants behave as susceptible while others as resistant.