Efecto de tres niveles de estrés hídrico y dos períodos de aplicación sobre algunos parámetros de calidad funcional de plántulas de "Quercus ilex" L. y su desarrollo postransplante
- Planelles González, Rosa
- Villar Salvador, Pedro
- Oliet Palá, Juan Antonio
- López Arias, Mariano
ISSN: 1575-2410
Datum der Publikation: 2004
Titel der Ausgabe: Actas de la III Reunión sobre Repoblaciones Forestales
Nummer: 17
Seiten: 81-85
Art: Artikel
Andere Publikationen in: Cuadernos de la Sociedad Española de Ciencias Forestales
Zusammenfassung
Drought stress is the main factor of mortality of Quercus ilex L. seedlings in Mediterranean plantations. The objective of this study was to assess the effect of drought hardening applied in the nursery at the end of the growing season on the drought tolerance of Q. ilex seedlings and on their outplanting performance. Plants were subjected to three-water stress hardening levels for 2.5 and 3.5 month and compared with a control. At the end of the hardening period Root Growth Potential and the out-planting survival and growth of Q. ilex seedlings was determined in a controlled plantation. Root growth potential was reduced by drought hardening. When planted under xeric conditions, mortality and shoot growth did not differ among hardening treatments but under mesic conditions the moderately hardened and control plants presented a higher growth than the rest of the treatments. However, these differences were attributed to differences of the plant's shoot size at planting, no differences existing when the size of the plants was controlled for.