Genetic correlations between pulpwood and solid-wood selection and objective traits in Eucalyptus globulus

Genetic correlations between pulpwood and solid-wood selection and objective traits in Eucalyptus globulus

• If selective breeding is to be successful, significant genetic variation must be present in the traits targeted for improvement (i.e. “objective traits”). • This study aimed to quantify genetic variation in Eucalyptus globulus pulpwood and sawn-timber objective traits (rotation-age whole-tree volu...

Full description

Saved in:
Bibliographic Details
Published in:Annals of forest science. Vol. 67; no. 5; p. 511
Main Authors: Hamilton, Matthew G., Potts, Brad M., Greaves, Bruce L., Dutkowski, Greg W.
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 2010
EDP Sciences
Springer Nature (since 2011)/EDP Science (until 2010)
Subjects:
Agricultural sciences
Biological and medical sciences
Biomedical and Life Sciences
Environment
Forestry
Forestry Management
Fundamental and applied biological sciences. Psychology
Life Sciences
Original Article
Silviculture, forestry
Tree Biology
Wood Science & Technology
volume
checking
survie
infradensité
Janka hardness
survival
dureté Janka
basic density
contrôle
Quantitative character
Eucalyptus globulus
Genetic parameter
Pulpwood(forest product)
Basic density
Hardness
Survival
Dicotyledones
Angiospermae
Forestry
Myrtaceae
Wood industry
Selection criterion
Hardwood forest tree
Spermatophyta
checking > -volume
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:• If selective breeding is to be successful, significant genetic variation must be present in the traits targeted for improvement (i.e. “objective traits”). • This study aimed to quantify genetic variation in Eucalyptus globulus pulpwood and sawn-timber objective traits (rotation-age whole-tree volume, survival, whole-tree basic density, sawn-board Janka hardness and sawn-board internal checking) and estimate additive genetic correlations between these and inexpensively-assessed “selection traits”. • Significant genetic variation was identified in all objective traits at the subrace and/or family within subrace level. • Selection-age diameter at breast height (1.3 m, DBH) was strongly genetically correlated with rotation-age volume (0.78) and survival (0.82). Subrace and additive genetic correlations of selectionage Pilodyn penetration with rotation-age 12-×-12-mm-sample basic density (−0.70 and −0.75 respectively) and whole-tree basic density (−0.83 and −0.91 respectively) were also strong. • No significant subrace or additive genetic correlation between wood-sample gross shrinkage and sawn-board internal checking was detected. However, subrace and additive genetic correlations of sawn-board Janka hardness with Pilodyn penetration (−0.75 and −0.58 respectively) and sample gross shrinkage (−0.77 and −0.73 respectively) were significantly different from zero. • These findings suggest that genetic improvement of the examined objective traits is possible through selective breeding, although none of the assessed selection traits were strongly correlated with internal checking.
ISSN:1286-4560
1297-966X
DOI:10.1051/forest/2010013