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Genetic and environmental variation in heartwood colour of Australian blackwood (Acacia melanoxylon R.Br.)
Citation
Bradbury, G and Potts, BM and Beadle, CL and Dutkowski, G and Hamilton, M, Genetic and environmental variation in heartwood colour of Australian blackwood (Acacia melanoxylon R.Br.), Holzforschung: International Journal of The Biology, Chemistry, Physics and Technology of Wood, 65, (3) pp. 349-359. ISSN 0018-3830 (2011) [Refereed Article]
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Copyright Statement
Copyright © by Walter de Gruyter
Abstract
Australian blackwood (Acacia melanoxylon R.Br.) is a highquality
appearance-grade timber species native to eastern
Australia. It is characterised by dark-coloured heartwood,
with colour varying from pale straw to red-brown and walnut
brown, and pale cream-coloured sapwood. This wide range
in heartwood colour is expressed as between- and within-tree
variation, and is regarded as a problem in markets where
colour consistency is important. To understand the genetic
and environmental control of heartwood colour, multiple colour
measurements were taken from stem cores from 16 openpollinated
family collections of blackwood planted across
three 19-year-old progeny trials. Data was analysed with a
mixed model with within-tree variation modelled using a
three-node cubic spline. Significant genetic, environmental
and genetic-by-environment interactions were detected, not
only in the variation in between-tree mean heartwood colour
but also in the pattern of within-tree heartwood colour variation.
In general, heartwood colour became darker, less yellow
and more red towards the sapwood/heartwood boundary.
To control the between- and within-tree heartwood colour
variation in blackwood plantations, care is needed to not only
select genotypes with the desired wood colour and colour
variation but also site characteristics that allow expression of
that colour.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | CIELab; cubic-spline; progeny; wood colour variation; wood quality. |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Forestry sciences |
| Research Field: | Tree improvement (incl. selection and breeding) |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Forestry |
| Objective Field: | Hardwood plantations |
| UTAS Author: | Bradbury, G (Mr Gordon Bradbury) |
| UTAS Author: | Potts, BM (Professor Brad Potts) |
| UTAS Author: | Beadle, CL (Dr Christopher Beadle) |
| UTAS Author: | Dutkowski, G (Mr Greg Dutkowski) |
| UTAS Author: | Hamilton, M (Dr Matthew Hamilton) |
| ID Code: | 72172 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 9 |
| Deposited By: | Plant Science |
| Deposited On: | 2011-08-23 |
| Last Modified: | 2017-11-08 |
| Downloads: | 2 View Download Statistics |
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