Tesis doctoral de Monica Berbegal Martinez
Verticillium wilt of artichoke caused by verticillium dahliae kleb. Is an important limiting factor of artichoke production in eastern-central spain. Verticillium wilts are among the most difficult plant diseases to control mainly because of the broad host range and virulence diversity of the pathogen and the long survival of the resting structures (microscleriotia) in soil. The spectrum of vegetative compatibility groups (vcgs) diversity among v. Dahliae isolates from artichoke in eastern-central spain was assessed in earlier studies. This information is essential since, in the absence of sexual stage, isolates from different vcgs are thought to be genetically isolated populations which may vary in some ecological, physiological and virulence traits. In this sense, knowledge about the molecular and virulence diversity in the pathogen population is a key factor for the management of the disease. Population of v. Dahliae affecting artichoke in eastern-central spain is well characterized, however, information about basic epidemiological aspects and host specificity are necessary to better understand this pathosystem. Furthermore, there is a need of new control strategies for the disease management in the area of study. inoculum density-disease development relationship was studied in ten commercial artichoke fields. To this aim, inoculum levels were analyzed and plants were monitored for disease at the beginning and the end of the growing season and along two consecutive growing seasons. V. Dahliae inoculum densities ranging from 5 to 9 microsclerotia per gram of soil were associated with a mean percentage of infected plants of about 50 %. Inoculum in soil decreased significantly by the end of the first growing season but slightly increased at the end of the second growing season at the time of higher disease symptom severity. once determined v. Dahliae inoculum thresholds in commercial artichoke fields, new control strategies such biofumigation alone and with a low d
Datos académicos de la tesis doctoral «EpÁ¬demiology, host range, genetic diversity and control of verticillium dahliae, causal agent of verticillium wilt of artichoke in eastern-central spain.«
- Título de la tesis: EpÁ¬demiology, host range, genetic diversity and control of verticillium dahliae, causal agent of verticillium wilt of artichoke in eastern-central spain.
- Autor: Monica Berbegal Martinez
- Universidad: Politécnica de Valencia
- Fecha de lectura de la tesis: 08/07/2008
Dirección y tribunal
- Director de la tesis
- Josep Armengol Fortí
- Tribunal
- Presidente del tribunal: Rafael manuel Jimenez diaz
- María del mar Jimenez gasco (vocal)
- paplomatas Epameinondas (vocal)
- ana-maria Ortega gea (vocal)