Data/hora: 01/06/2024 07:29:06

Biblioteca(s): | Epagri-Sede.
Data corrente: | 07/11/2022
Data da última atualização: | 07/11/2022
Autoria: | ARAUJO, L.; PINTO, F. A. M. F.
Título: | Conidia release and ascospores ejection of Neonectria ditissima in apple branches in São Joaquim, Brazil.
Ano de publicação: | 2022
Fonte/Imprenta: | In: WORKSHOP BRASILEIRO DE EPIDEMIOLOGIA DE DOENÇAS DE PLANTAS, 6., 2022, Chapecó, SC. Resumos... Brasília: Sociedade Brasileira de Fitopatologia, 2022. p. 33
Idioma: | Inglês

Conteúdo:

Brazilian conditions during spring/summer, with prolonged periods of leaf wetting, high 
temperatures, and relative humidity, are ideal conditions for apple diseases. Only in 2012 
European canker caused by Neonectria ditissima was officially confirmed in Brazilian 
apple orchards. The disease has high potential to damage fruit production, and reduces 
the productivity. Due to the need to eliminate symptomatic branches, and/or all apple tree 
to contain epidemics within the orchards, knowledge of N. ditissima spore release is 
required to optimize management practices, because it facilitates prediction of European 
canker infection risks and improves disease management decisions. Thus, the objective 
of the study was to investigate the N. ditissima spore release in apple plants and detached 
branches over time. In São Joaquim, Santa Catarina, in Brazilian South region, both 
conidia and ascospores of N. ditissima can be released from cankers in apple tissues that 
are alive and/or dead during all year. Peaks of spores release of N. ditissima were 
observed in traps when there is rainfall, irrespective of the season in Brazil. Ascospores 
peaks were more observed and higher in comparison to conidia collected in both traps 
and apple tissues. Symptomatic apple detached branches actively release spores of N. 
ditissima in the three years of evaluation, however in smaller quantity in comparison to 
traps with alive plants. Thus, management measures should be adopted for the control of 
European canker dissemination in apple orchards in Brazil

Thesagro: | apple diseases.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_55474.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (107642-1) - UPC - PL - DD -  -  -  - DIS