Data/hora: 29/06/2024 09:08:36

Biblioteca(s): | Epagri-Sede.
Data corrente: | 21/06/2022
Data da última atualização: | 21/06/2022
Autoria: | MALLMANN, G.; MONTEIRO, F. P.; FERNANDES, J. M. C.; CARDOSO, D. A.; VALMORBIDA, J.; WAMSER, A. F.; FELTRIM, A. L.; LINS JÚNIOR, J. C.
Título: | Number of pustules of garlic rust under different temperatures and leaf wetness.
Ano de publicação: | 2022
Fonte/Imprenta: | Plant Pathology & Quarantine, Guiyang, China, v. 12, n. 1, p. 114-118, 2022.
Idioma: | Inglês

Conteúdo:

Puccinia porri is an etiological agent of garlic rust. The disease symptoms are characterized
by leaf lesions that initially appear as whitish spots. With the disruption of the leaf cuticle, yelloworange
uredospores are exposed. These signs are commonly known as pustules. Bulb production is
affected by the reduction of photosynthetically active leaf area. The decrease in production is most
pronounced when the attack occurs before bulb formation. The objective of this work was to
quantify the latency periods of garlic rust and the number of pustules formed under the influence of
temperature (10, 15, 20 and 25ºC) and leaf wetness period (6, 12, 18 and 24h). The latent period for
this pathosystem varied between 10 and 12 days when the plants were subjected to temperatures of
10, 15 and 20°C after inoculation. The number of rust pustules was higher in garlic plants subjected
to a temperature of 15°C. However, there were also a significant number of lesions at temperatures
of 10ºC, especially when the leaf wetness period was 24 hours. At temperatures above 20°C, the
number of pustules was less expressive. The results are important to perform fungicide efficacy
tests in optimal conditions for disease progression and epidemiological studies.

Thesagro: | Epidemiology; Puccinia porri; uredospores.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_52280.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (107024-1) - UPC - AP - DD -  -  -  - DIS