Abstract

JIMENEZ-MALDONADO, María Isabel et al. Physiological response and quality of mango cv Ataulfo infected with Colletotrichum spp. Rev. Mex. Cienc. Agríc [online]. 2022, vol.13, n.6, pp.1103-1115.  Epub Feb 24, 2023. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v13i6.3028.

The objective of this work was to evaluate the postharvest behavior of the fruit of mango cv. Ataulfo in a state of physiological maturity in response to infection induced by Colletotrichum siamense and Colletotrichum asianum. Mangoes were inoculated with C. siamense and C. asianum and stored for 10 days at 28 °C and RH of 85-90%. The virulence of Colletotrichum spp. was evaluated in the fruits. And its effect on the variables of physical, chemical quality and respiration. At 10 days of storage, C. siamense showed greater virulence than C. asianum in mango fruits, with some differences in internal color between inoculated fruits and controls. The fruits inoculated with C. asianum had greater respiratory activity and lower texture with respect to the control. The physical and chemical quality variables in the fruits showed significant differences with respect to storage time, but not due to the presence of the fungus. The infection of the mangoes caused by the two species of Colletotrichum manifested as necrotic spots in the infected area of the fruits, affecting the appearance and visual quality.

Keywords : Colletotrichum asianum; Colletotrichum siamense; postharvest; virulence.