English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/103645
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

Juvenile–mature genetic correlations in Pinus radiata D. Don. under different nutrient × water regimes in Spain

AuthorsCodesido, V.; Zas Arregui, Rafael ; Fernández López, Josefa
KeywordsEarly selection
Radiata pine
Drought
Nutrient availability
Retrospective studies
Climatic chamber
Field correlations
Issue DateMar-2012
PublisherSpringer
CitationEuropean Journal of Forest Research 131 (2): 297-305 (2012)
AbstractIndividual and family heritabilities and juvenile–mature genetic correlations were estimated for growth and biomass traits recorded in treatment with optimal and limiting water and/or nutrient availability to study how the different growth environments affected genetic parameter estimates. Thirty open-pollinated families, randomly selected among the 58 families used in field progeny tests in Galicia, were cultivated for 30 weeks in a climatic chamber under controlled conditions. Two water regimes (high and low water supply) combined with two nutrient regimes (high and low nutrient supply) were applied by subirrigation. Several growth, branching and dry mass traits were assessed 30 weeks after sowing and compared with field performance (height, diameter and volume) of 4-year-old progeny tests established at three different sites in Galicia (NW Spain). Both the irrigation and the fertilization treatments had a strong effect in all the assessed traits except irrigation for the number of branches. Heritabilities for growth and biomass traits were moderate to high (0.13–0.77) in individual treatments. However, when analyzing all treatments together, the impact of the family × treatment interactions led to a reduction (0.20–0.35) in the heritability estimates. The results indicated that the genotype × water and genotype × nutrient interactions may be important and could not be ignored in the Galician radiata pine breeding program. Climatic chamber–field correlations were different between different traits measured at climatic chamber experiments and the three field tests. The correlations were larger with the well-watered treatments, suggesting that further development of early testing methods for radiata pine in Galicia should include treatments with no limiting water availability.
Publisher version (URL)http://dx.doi.org/10.1007/s10342-011-0501-9
URIhttp://hdl.handle.net/10261/103645
DOI10.1007/s10342-011-0501-9
ISSN1612-4669
E-ISSN1612-4677
Appears in Collections:(MBG) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 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.