Powdery mildew (Oidium mangiferae Bert.) infection in mango varieties.
Galli J. A., Silveira L. C. P., Michelotto M. D., Martins A. L. M.
Author Affiliation: Agência Paulista de Tecnologia dos Agronegócios - APTA Regional Centro Oeste, Pindorama, SP, Brazil.
Bioscience Journal 24 : 43-46
Abstract : The objective of this work was to evaluate the incidence of powdery mildew in mango varieties. Twenty seven varieties, grafted on Manila (Carabao) mango variety, were evaluated. Powdery mildew was evaluated through the observation of symptoms on young inflorescences. A visual scale of notes was used for evaluation: 1 - visible symptoms in 0 to 25% of the inflorescence; 2 - 25-50%; 3 - 50-75%; and 4 - more than 75%. The varieties' yield was evaluated through the number of fruits per tree. The experimental design used was randomized blocks, with 27 treatments and three replications. The averages were compared by the Scott-Knott test, at 5% probability. The mango varieties presented different performance in relation to powdery mildew incidence, and could be separated into five groups. The most resistance variety was Rocha. The presence or absence of powdery mildew had no effect on yield.