Catálogo de publicaciones - tesis
Título de Acceso Abierto
Generación de tecnologías para mejorar la germinación de semillas de Poncirus trifoliata (L.) Raf.
Marcela Andrea Catraro Patricia Cecilia Flores Norma Micheloud Juan Carlos Favaro María Fernanda Rivadeneira Norberto Francisco Gariglio
acceptedVersion.
Resumen/Descripción – provisto por el repositorio digital
Poncirus trifoliata is the most important rootstock in Argentina’s citrus production. Its seeds present a physical dormancy. The objectives of this research were to select the most appropriate chemical scarification method and to adjust tests for the determination of the physiological quality of Poncirus trifoliata seeds to improve the productivity of the nurseries of citrus plants under cover. A first experiment was conducted to assess the efficiency of three chemical scarification methods and the effect of these methods on seed vigor. A second experiment was conducted to assess seed vigor and the role of seed coats in imbibition. The best chemical scarification method was compared with manual peeled seeds, and no removal of seed coats. At the end of the germination tests, the seedlings were classified into two categories: normal and abnormal. Also, a preliminary experiment was carried out to evaluate the concentration and incubation time of the tetrazolium viability test (TZ) proposed by the associations of seed analysts, and the treatments to adjust the TZ test were defined based on the results obtained. The seeds were considered viable or non viable according to the stains, elaborating topographic viability patterns. Scarification with sodium hypochlorite showed the best results. Patterns of seedlings were described for the categories of normal (vigorous and weak) and abnormal seedlings. It was determined as the most appropriate methodology to perform the TZ test the use of a concentration of 0.2% of the TZ salt, 5 h of incubation and unpeeled seeds to optimize the resources involvedPalabras clave – provistas por el repositorio digital
Chemical scarification; Normal and abnormal seedlings; Viability; Tetrazolium; Poncirus trifoliata; Vigor; Escarificado químico; Plántulas normales y anormales; Viabilidad; Tetrazolio
Disponibilidad
| Institución detectada | Año de publicación | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No requiere | 2019 | Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) |
|
Información
Tipo de recurso:
tesis
Idiomas de la publicación
- español castellano
País de edición
Argentina
Fecha de publicación
2019-10-01
