Título:	Variability of mango accessions resistance to dieback disease caused by Lasiodiplodia theobromae and Neofusicoccum parvum.
Autoria:	COELHO, W. C. P. SANTOS, C. A. F. BATISTA, D. da C.
Afiliação:	Washington C. P. Coelho; CARLOS ANTONIO FERNANDES SANTOS, CPATSA; DIOGENES DA CRUZ BATISTA, CPATSA.
Ano de publicação:	2020
Referência:	Amazonian Journal of Plant Research, v. 4, n. 1, p. 462-468, 2020.
Conteúdo:	Mango growing is one of the main agricultural activities in the fruit sector in Brazil for the internal and export market. The crop is subject to damage caused by the fungi Lasiodiplodia theobromae and Neofusicoccum parvum, especially mango dieback disease, which limits the yield and longevity of the mango tree. In spite of the importance of these pathogens, studies regarding sources of resistance in mango are rare. The aim of this study was to evaluate 75 accessions of mango available in the germplasm bank regarding resistance to the fungi L. theobromae and N. parvum to support breeding programs for mango growing. Evaluations were carried out from Apr 2016 to Mar 2018. Conidia suspensions of 104 conidia mL-1 of L. theobromae or N. parvum were applied with a manual sprayer on young branches. Accessions were considered resistant when disease symptoms were absent on more than 90% of the branches at three different periods of inoculation. Thirty-three accessions showed resistance to L. theobromae and 19 accessions showed resistance to N. parvum. Six accessions were most susceptible (<50%) to L. theobromae, whereas 25 accessions were most susceptible to N. parvum. The accessions ‘Apple DCG’, ‘Ataulfo’, ‘Da porta’, ‘Dashehari’, ‘Espada’, ‘Haden’, ‘Haden 2H’, ‘Heidi’, ‘Irwin’, ‘Keitt’, ‘Kent’, ‘Néldica’, ‘Recife’, and ‘Smith’ showed resistance to the two pathogens and can be used as sources of resistance to the two fungi in mango breeding studies, or these accessions can even be recommended for use as commercial cultivars.
Thesagro:	Manga Lasiodiplodia Theobromae Fungo Doença
NAL Thesaurus:	Botryosphaeriaceae Mangoes
Palavras-chave:	Neofusicoccum parvum Morte da manga
Digital Object Identifier:	10.26545/ajpr.2020.b00055x
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)