SciELO - Scientific Electronic Library Online

 
vol.38 número2Estructura y crecimiento de los bosques de Araucaria angustifolia en el sur de BrasilInfluencia de factores bióticos y abióticos en el crecimiento de la regeneración pre- y post-cosecha en un bosque de Nothofagus pumilio índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Bosque (Valdivia)

versión On-line ISSN 0717-9200

Resumen

ZAPATA, Ricardo M; AZAGRA MALO, Carmen  y  KARLIN, Marcos S. Pre-germinative treatments for seed dormancy breaking of three populations of Ramorinoa girolae, an endemic woody species from arid zones in Argentina. Bosque (Valdivia) [online]. 2017, vol.38, n.2, pp.237-245. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002017000200002.

For the conservation of species, especially those endemic or vulnerable, it is necessary to deepen the knowledge about their ecological dynamic and to find adequate techniques for multiplication. Ramorinoa girolae, "chica", is an endemic woody species of the xerophytic flora from western Argentine arid regions, with a restricted occupation area and fragmented communities. The lack of records makes relevant the conduction of research underpinning knowledge of the species, regeneration mechanisms and multiplication techniques. The objective of this work was to study the behavior of seeds of three populations under germination conditions and the response for different pre-germinative treatments. Germination trials were made in the laboratory with different pre-germinative techniques using the seeds of three populations under a completely aleatory design. Results confirm the presence of physical dormancy in seeds restricting the imbibing process for their rapid germination. The treatments, hot water scarification and mechanical scarification with sandpaper, increase significantly the germination percentages. The best treatment is mechanical scarification with sandpaper, reaching values of 92 % of germination at five days from the beginning of the treatment. The uneven response of germination of the different populations confirms the different behavior of local populations and results interesting for ecosystem studies and future lines of investigation and management of this species. These technical aspects appear as relevant for the application of reforestation and environmental restoration programs.

Palabras clave : dormancy; reforestation; pre-germinative treatments; arid ecosystems.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons