Data/hora: 25/06/2024 01:31:12

Biblioteca(s): | Embrapa Hortaliças.
Data corrente: | 07/12/2020
Data da última atualização: | 14/12/2020
Autoria: | VELOSO, J. S.; LIMA, W. G.; REIS, A.; DOYLE, V. P.; MICHEREFF, S. J.; CÂMARA, M. P. S.
Afiliação: | JOSIENE S. VELOSO, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; WALÉRIA G. LIMA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; AILTON REIS, CNPH; VINSON P. DOYLE, DEPARTMENT OF PLANT PATHOLOGY AND CROP PHYSIOLOGY, LOUISIANA STATE UNIVERSITY; SAMI J. MICHEREFF, UNIVERSIDADE FEDERAL DO CARIRI; MARCOS P. S. CÂMARA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO.
Título: | Factors influencing biological traits and aggressiveness of Colletotrichum species associated with cashew anthracnose in Brazil.
Ano de publicação: | 2021
Fonte/Imprenta: | Plant Pathology, v. 70, n. 1, p. 167-180, Jan. 2021.
DOI: | https://doi.org/10.1111/ppa.13276
Idioma: | Português
Conteúdo: | The present study aimed to estimate the optimum temperatures for mycelial growth, sporulation, and conidial germination of seven Colletotrichum species (C. chrysophilum, C. fragariae, C. fructicola, C. gloeosporioides, C. queenslandicum, C. siamense, and C. tropicale) associated with cashew anthracnose in Brazil. Their aggressiveness on cashew leaves and six alternative host fruits, and their sensitivity to three fungicides were also investigated. The optimum temperatures for mycelial growth, sporulation, and conidial germination ranged from about 25 to about 33°C. All Colletotrichum species induced anthracnose symptoms on wounded cashew leaves, but none of them caused lesions on intact leaf surfaces. The Colletotrichum species, except for C. fragariae and C. fructicola, were pathogenic to wounded fruits of avocado, banana, guava, mango, and papaya, and some isolates also produced lesions on nonwounded fruit tissues. No symptoms were observed on passion fruits, regardless of the inoculation method. Mycelial growth, sporulation, conidial germination, and/or appressorial formation of the seven Colletotrichum species were inhibited by azoxystrobin, difenoconazole, and thiophanate-methyl to varying degrees. The present study will contribute to the development of forecasting models based on prevailing weather of cashew cropping zones and improve cashew anthracnose management in Brazil.
Thesaurus Nal: | Anacardium; Chemical control.
Categoria do assunto: | --
Registro original: | Embrapa Hortaliças (CNPH)
Exemplares: | CNPH - (41423-1) - UPC - AP - DD -  -  -  - DIS