Selection of Corymbia citriodora for pulp productivity

Jeremy T Brawner; Roger Meder; M J Dieters; David J Lee

doi:10.2989/20702620.2012.701418

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Selection of Corymbia citriodora for pulp productivity

Journal article

Open access

Peer reviewed

Selection of Corymbia citriodora for pulp productivity

Jeremy T Brawner, Roger Meder, M J Dieters and David J Lee

Southern Forests, Vol.74(2), pp.121-131

2012

DOI: https://doi.org/10.2989/20702620.2012.701418

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Abstract

corymbia citriodora subsp. variegata

genetic parameters

index selection

subtropics

wood quality

Evaluation of a series of spotted gum (Corymbia citirodora) progeny trials, established in the subtropical region of Queensland, Australia, was undertaken to provide information for the development of advanced-generation breeding populations suitable for pulp production. Measurements of growth at two ages were combined with assessments of wood density and pulp yield from a selected sample of provenances to provide comparisons between provenances, to generate genetic parameter estimates and to predict genetic gain potential. Although growth at this age was moderate relative to other eucalypts, the near-infrared predictions of average wood density of 756 kg m-3 and pulp yield of 55% indicate the species has considerable potential as a pulpwood crop. A pulp productivity breeding objective was used to identify production populations using a range of selection trait weightings to determine potential genetic gain for pulp productivity. Genetic parameters indicated (1) levels of genetic control were moderate for all traits and higher for wood property traits, (2) genetic improvements could be achieved by selection among and within provenances with greater levels of improvement available from selection within populations, (3) genotype by environment interactions were negligible, (4) genetic correlations between traits were favourable, and (5) selection of volume production alone would maximise improvements in pulp productivity.

Details

Title: Selection of Corymbia citriodora for pulp productivity
Authors: Jeremy T Brawner (Author) - University of Queensland
Roger Meder (Author) - University of Queensland
M J Dieters (Author) - University of Queensland
David J Lee (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Southern Forests, Vol.74(2), pp.121-131
Publisher: Southern African Institute of Forestry
Date published: 2012
DOI: 10.2989/20702620.2012.701418
ISSN: 2070-2620
Copyright note: This is an Author's Original Manuscript of an article submitted for consideration in the Southern Forests [copyright Taylor & Francis]; Southern Forests is available online at http://www.tandfonline.com/10.2989/20702620.2012.701418
Organisation Unit: Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
Language: English
Record Identifier: 99450157502621
Output Type: Journal article

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Web Of Science research areas: Forestry

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