Evaluación de la capacidad antagónica de cepas nativas de Trichoderma spp. frente a Verticillium dahliae en la provincia de Catamarca

The antagonistic capacity of native strains of Trichoderma spp. against Verticillium dahliae, under different culture and incubation conditions. The isolation and molecular identification of antagonistic native strains and the phytopathogen were carried out. They were evaluated in two in vitro tests...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: González Basso, M. V., Picón, M. C., Ribero, G., Bellone, C.
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Litoral 2021
Materias:
biocontrol
parasitism
grape marc
photoperiod
pH
parasitismo
orujo de vid
fotoperiodo
Acceso en línea:https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEAgrarias/article/view/10623
Aporte de:
Biblioteca Virtual - Publicaciones (UNL) de Universidad Nacional del Litoral
Descripción
Sumario:The antagonistic capacity of native strains of Trichoderma spp. against Verticillium dahliae, under different culture and incubation conditions. The isolation and molecular identification of antagonistic native strains and the phytopathogen were carried out. They were evaluated in two in vitro tests, using ADP culture medium in two pH conditions and incubated under two lighting conditions. By means of dual culture techniques, a trial was carried out with a completely randomized design with a 2 x 2 x 2 factorial arrangement, and microcultures. The antagonistic capacity of two native strains of Trichoderma, TT (T. hamatum) and M5A (T. hamatum) on the native phytopathogen strain (Verticillium dahliae) was evaluated. The results obtained showed that the TT strain at pH 6.5 with 16 h light / 8 h Darkness had the shortest Contact Time and the highest Growth Inhibition Percentage with 8 h of light /16 h. of darkness. Class 1 was obtained in both tests and treatments, both being efficient in the competition for substrate and space. It was observed that the native strain M5A and the standard strain TT, parasitize the phytopathogen. Therefore, it is concluded that the TT strain has greater antagonistic attributes against the phytopathogen V. dahliae, under conditions of 8 h light / 16 h dark.

Ejemplares similares