Título
Hongos de suelo y su asociación con el síndrome de punta morada de la papa en Coahuila y Nuevo León
Autor
ROBERTO CARLOS MOCTEZUMA GUTIÉRREZ
Colaborador
ABIEL SANCHEZ ARIZPE (Asesor de tesis)
ALBERTO FLORES OLIVAS (Asesor de tesis)
MARÍA ELIZABETH GALINDO CEPEDA (Asesor de tesis)
ENRIQUE GUSTAVO CHARLES CARDENAS (Asesor de tesis)
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
"El presente trabajo de investigación tuvo por objetivo conocer la incidencia y severidad así como determinar la asociación de los hongos Fusarium oxysporum y Verticillium dahliae mediante pruebas de patogenicidad en el síndrome de la punta morada de la papa en la región sur de Coahuila y Nuevo León. Para esto se realizaron muestreos de incidencia y severidad del síndrome de la punta morada en la región antes mencionada."
"This research had the objective of knowing the incidence and severity as well as how to determine the association of Fusarium oxysporum and Verticillium dahliae fungus through the potato´s purple top syndrome pathogeny tests in the southern region of Coahuila and Nuevo Leon. For this reason, incidence and severity samplings of the purple top syndrome were carried out in the previously mentioned region. Samplings were carried out in a W pattern where incidence and severity was determined for 810 plants in each plot. In short, 4 pieces of land distributed along the potato region were sampled. The purple top sickness incidence in the studied region obtained a high level while sickness severity depended on incidence´s advance, so it was significantly progressive. Fungus association was relatively high in all the observed plots associated to the sickness syndrome. For the last sampling, plants with well-defined symptoms of the potato´s purple top were placed in plastic bags and taken for its processing to the Phytopathology laboratory of the Agricultural Parasitology Department of the UAAAN. Once isolation, purification and identification was carried out, the pathogens were increased using stem inoculation technique by injection. The inoculation of Fusarium oxysporum and Verticillium dahliae fungus was carried out in a separate form and at the same time in combination with the use of the technique, the used plants were developed in in vitro conditions, and they were adapted for 15 days in a bioclimatic chamber, afterwards, for about 10 days, they were sown in polyethylene bags and inoculated with the fungus. The sickness symptoms began to appear 35 days after inoculation. Afterwards, reisolations were carried out for the fungus which was found in the plants that had symptoms of purple top potato syndrome and the morphological characteristics found in the studied fungus coincided with the fungus observed in the isolations"
Fecha de publicación
2005
Tipo de publicación
Tesis de maestría
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Idioma
Español
Audiencia
Estudiantes
Investigadores
Repositorio Orígen
Repositorio Digital CID-UAAAN
Descargas
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