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Resistance avaliation of 47 mango germplasm to the fungi Fusicoccum aesculis and Neofusicoccum parvum

The production of mango in the San Francisco Valley lower basin is considered one of the highlights in the export of the fruit by the country. Fruits of the cultivar Tommy Atkins are the most exported. However, the magnitude of losses due to post-harvest rots caused by fungi Botryosphaeriaceae is always a major concern for the exporter and importer of fruit. The search for control methods more effective and clean is a worldwide trend. The objective of this study was to evaluate the reaction of the fruits of 47 mango genotypes, for resistance to fungi Fusicoccum aesculis and Neofusicoccum parvum. The inoculations were performed by means of deposition culture medium discs potato-dextrose-agar (PDA) containing the pathogen structures on two positions perpendicular to the mango, and then maintained for 24 hours in a humid chamber. Measurements of lesions were performed until the seventh day, with a millimeter ruler. It was determined the lesion growth mean rate (LGMR) in each genotype. The majors LGMR were observed in the 'Roxa' and 'Lita' genotypes when inoculated with F. aesculis, and on 'Roxa', 'Ruby', 'Papo de peru', 'CPAC 22/93', 'Pingo de ouro', 'Pêssego' and 'M13269', when inoculated with N. parvum. The 'Nego não chupa', 'Manga d'água', 'Juazeiro VI', 'Juazeiro VII' and 'Favo de mel' genotypes were the ones who developed the minor LGMR for both pathogens and significative differences in relation to other genotypes.

Stem-rot; Botryosphaeriaceae; Mangifera indica


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