English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/25693
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Transferring Atlantic maritime pine improved material to a region with marked Mediterranean influence in inland NW Spain. A likelihood-based approach on spatially adjusted field data

AuthorsMata Pombo, Raúl de la; Zas Arregui, Rafael
KeywordsPinus pinaster
Progeny trial
Iterative spatial analysis
Genotype x environment interaction
Spatial autocorrelation
REML estimation
Genetic correlation
Variance-covariance matrix
Heterogeneous variance models
Issue DateJul-2010
PublisherSpringer
CitationEuropean Journal of Forest Research, 129 (4): 645-658.
AbstractThe inland region of Galicia (NW Spain) marks the boundary between the Atlantic climate of the coastal area and the typical Mediterranean climate of central Spain. Compared to the Atlantic coast, climate in this area has a pronounced summer drought, lower annual precipitation, and higher annual thermal oscillation. Despite the high productivity and ecological importance of maritime pine in inland Galicia, local forest reproductive material (FRM) of high genetic quality is not available for this area. Seed sources originating elsewhere and of unknown adaptation to this area are commonly used for reforestation. With the aim of finding new sources of FRM for this region and exploiting the genetic gains of existing breeding programmes, we analysed the performance in field conditions of improved families of the Coastal Galicia (CG) and Western Australia (WA) breeding programmes. Growth, stem characteristics and branch habit were evaluated in five progeny trials established following a coastal-to-inland gradient. Likelihood-based analyses were used to estimate genetic correlations between environments and to test statistically for causes and patterns of genotype x environment interaction. Because of the strong non-random spatial structures and heterogeneity of residual variances, the analyses were carried out using heterogeneous residual variance mixed models on spatially adjusted data. The results indicated that there is not sufficient evidence to subdivide Galicia into the two current deployment areas. Interaction patterns do not reveal significant differences between zones, and crossover interactions for height growth are present both between and within areas. On the inland sites, the Atlantic improved materials clearly outperformed unimproved seedlots tested in adjacent provenance trials, suggesting the feasibility of using both the CG and WA breeding materials as sources of FRM for reforestation in inland Galicia. Of the two, the WA material showed excellent results for all traits. The inclusion of this material into the Galician maritime pine breeding population should be strongly considered.
Publisher version (URL)http://dx.doi.org/10.1007/s10342-010-0365-4
URIhttp://hdl.handle.net/10261/25693
DOI10.1007/s10342-010-0365-4
ISSN1612-4669
Appears in Collections:(MBG) Artículos
Files in This Item:
File Description SizeFormat 
Transferring_Atlantic...pdf306,03 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.