NDLI: Very early selection for solid wood quality: screening for early winners

Content Provider	Springer Nature Link
Author	Apiolaza, Luis A.
Copyright Year	2009
Abstract	• This article reviews the theoretical basis for indirect selection — where early selection is an example — and how correlated response is calculated. • The review is followed by a description of issues as to the choice of selection criteria that could explain the lack of substantial progress on breeding for wood quality. These include: the autoregressive nature of selection criteria, overemphasizing the importance of basic density as selection criterion, ignoring age-related trends of wood properties, using rotation age rather than technical thresholds as objective traits and ignoring that not all grades have identical marginal economic value. • Three data sets are either analyzed for the first time or reanalyzed under different assumptions, to explore the importance of these criticisms. • Finally, the use of critical value thresholds as very early selection criteria is suggested and discussed in the context of improving intrinsic corewood quality. • Cet article passe en revue les bases théoriques des méthodes de sélection indirecte — parmi lesquelles figure la sélection précoce — et la manière dont le gain corrélé est calculé. • Cette revue est suivie d’une description des problèmes liés au choix des critères de sélection et qui pourraient expliquer le manque de progrès substantiel suite à l’amélioration pour les propriétés du bois. Ceux-ci incluent l’auto-corrélation des critères de sélection, l’exagération de l’importance de la densité comme critère de sélection, l’oubli de l’évolution des propriétés du bois avec l’âge cambial, l’utilisation de l’âge de révolution comme caractère-cible plutôt que des seuils techniques et l’oubli que toutes les classes de produits n’ont pas la même valeur économique marginale. • Trois jeux de données ont été soit analysés pour la première fois soit ré-analysés sous différentes hypothèses pour explorer l’importance de ces critiques. • Enfin, l’utilisation de seuils critiques comme critères de sélection très précoce est suggérée et discutée dans le cadre de l’amélioration intrinsèque de la qualité du bois juvénile.
Starting Page	601
Ending Page	601
Page Count	1
File Format	PDF
ISSN	12864560
Journal	Annals of Forest Science
Volume Number	66
Issue Number	6
e-ISSN	1297966X
Language	French
Publisher	Springer Netherlands
Publisher Date	2009-01-01
Publisher Institution	Institut National de la Recherche Agronomique (INRA)
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	rigidité sélection précoce caractère seuil Pinus radiata Forestry Wood Science & Technology Forestry Management Tree Biology Environment
Content Type	Text
Resource Type	Article
Subject	Ecology Forestry

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