Published

2012-01-01

Physiological response of gmelina (Gmelina arborea Roxb.) to hydric conditions of the colombian Caribbean

Keywords:

ecofisiologia, relaciones hídricas, pigmentos, forestal (es)

Downloads

Authors

  • Andrea Rojas Laboratory of Plant Physiology and Biochemistry, Department of Biology, Universidad Nacional de Colombia. Bogota (Colombia).
  • Luz Marina Melgarejo Laboratory of Plant Physiology and Biochemistry, Department of Biology, Universidad Nacional de Colombia. Bogota (Colombia).
  • Miguel Rodríguez Forestry Division, Pizano. Zambrano (Colombia).
  • Leonardo Moreno Laboratory of Plant Physiology and Biochemistry, Department of Biology, Universidad Nacional de Colombia. Bogota (Colombia).

Gmelina is an important forest species because of its adaptability to different tropical environments, rapid growth and high quality wood for many uses. Although the species thrives in lowlands, both wet and dry, water availability is the main limiting factor for production in the latter. The transpiration rate, stomatal resistance, water potential and chlorophyll and carotenoid pigments content were monitored for three climatic seasons (rainy, transitional and dry) and three ages (seedling (2-10 months), juvenile (10-16 months) and adult (48-60 months)), in order to observe the physiological response of gmelina to conditions in northern Colombia. Transpiration rates decreased with the age of the trees and the critical value of leaf water potential, that generates stomatal closure, was observed below -2.6 MPa. The dry season resulted in increased carotenoid content, in contrast to the content of chlorophyll A, B and total.

Downloads

Download data is not yet available.

License

Copyright (c) 2012 Agronomía Colombiana

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

© Centro Editorial de la Facultad de Ciencias Agrarias, Universidad Nacional de Colombia

Reproduction and quotation of material appearing in the journal is authorized provided the following are explicitly indicated: journal name, author(s) name, year, volume, issue and pages of the source. The ideas and observations recorded by the authors are their own and do not necessarily represent the views and policies of the Universidad Nacional de Colombia. Mention of products or commercial firms in the journal does not constitute a recommendation or endorsement on the part of the Universidad Nacional de Colombia; furthermore, the use of such products should comply with the product label recommendations.

The Creative Commons license used by Agronomia Colombiana journal is: Attribution - NonCommercial - ShareAlike (by-nc-sa)

Licencia de Creative Commons

Agronomia Colombiana by Centro Editorial of Facultad de Ciencias Agrarias, Universidad Nacional de Colombia is licensed under a Creative Commons Reconocimiento-NoComercial-CompartirIgual 4.0 Internacional License.
Creado a partir de la obra en http://revistas.unal.edu.co/index.php/agrocol/.