Data/hora: 03/07/2024 10:52:44

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	16/12/2022	
Data da última atualização: 	16/12/2022	
Autoria: 	ARAUJO, L.; PINTO, F. A. M. F.	
Título: 	Neonectria ditissima spore release in apple plants and detached branches in Brazil.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Journal of Plant Pathology, New York, v. 104, n. 1, p. 1283-1289, 2022.	
Idioma: 	Inglês	
Conteúdo: 	Prolonged periods of leaf wetness, high temperatures, and relative humidity during spring/summer are ideal conditions for
the development of apple diseases in Brazil. In 2012, European canker, caused by Neonectria ditissima was officially confirmed
in Brazilian apple orchards. The disease has a high potential to adversely affect fruit production as all symptomatic
branches and/or all apple trees need to be eliminated to contain the epidemic in the orchards. Knowledge of N. ditissima
spore release is required to optimize management practices because it facilitates the prediction of European canker infection
risks and improves disease management decisions. Thus, the objective of this study was to investigate the release of
N. ditissima spores from apple plants and detached branches over time. In the São Joaquim region of Brazil, both conidia
and ascospores of N. ditissima can be released from cankers alive and/or dead in apple tissues year-round. In Brazil, peaks
of spore release from N. ditissima were observed in traps when there was rainfall, irrespective of the season. Ascospore
peaks were more frequent and higher than those of conidia trapped in both traps and apple tissues. Detached branches of
symptomatic apple trees actively released spores of N. ditissima in the three years of evaluation, but in smaller numbers in
comparison to traps with live plants. Thus, new and rigorous management measures should be adopted to control European
canker dissemination in Brazilian apple orchards.	
Thesagro: 	A2 quarantine pest; Cylindrocarpon heteronema; European canker; Malus domestica; Nectria galligena; Perithecia.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_56000.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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