Wood density proxies of adaptive traits linked with resistance to drought in Douglas fir (Pseudotsuga menziesii (Mirb.) Franco)

Authors
Ruiz Diaz Britez, Manuela; Sergent, Anne Sophie; Martinez Meier, Alejandro; Bréda, Nathalie; Rozenberg, Philippe
Publication Year
2014
Language
English
Format
article
Status
Published version
Description
A comparison of dead and surviving Douglas fir trees following the 2003 drought was made to define proxies of adaptive traits for resistance to drought. Increment cores were sampled from trees from three French regions: Centre, Midi-Pyrénées and Burgundy. Original tree-ring variables were calculated, based on a sliding density criterion dividing the microdensity profile into high- and low-density segments. Tree rings were analysed at each site in a number of consecutive annual rings before the 2003 drought event. Comparison between pairs of surviving and dead trees and between pairs of randomly selected trees (whether dead or alive) supports the evidence of systematic dissimilarities between surviving and dead trees in a number of original density variables. Correlation analysis between original and conventional ring density variables indicates a weak association. We found that the surviving trees were denser than the dead trees in all three sites, but that the denser part of the ring varied from region to region. We identified several original density variables intended to be used as proxies of adaptive traits in future studies of genetic determinism of Douglas fir resistance to drought.
EEA Bariloche
Fil: Ruiz Diaz Britez, Manuela. Universidad Nacional de Misiones. Parque Tecnológico Misiones; Argentina. Institut National de la Recherche Agronomique. Unité d’Amélioration Génétique et Physiologie Forestières; Francia
Fil: Sergent, Anne Sophie. Institut National de la Recherche Agronomique. Unité d’Amélioration Génétique et Physiologie Forestières; Francia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Martinez Meier, Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina
Fil: Bréda, Nathalie. Institut National de la Recherche Agronomique. Forest Ecology and Ecophysiology Unit; Francia
Fil: Rozenberg, Philippe. Institut National de la Recherche Agronomique. Unité d’Amélioration Génétique et Physiologie Forestières; Francia
Source
Trees. Structure and Function 28 (5) : 1289–1304 (October 2014)
Subject
Pseudotsuga menziesii
Wood Density
Madera
Sequía
Resistencia a la Sequía
Wood
Drought
Drought Resistance
Abeto de Douglas
Pino Oregón
Access level
Restricted access
License
Repository
INTA Digital (INTA)
Institution
Instituto Nacional de Tecnología Agropecuaria
OAI Identifier
oai:localhost:20.500.12123/4060