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Patterns of longitudinal within-tree variation in pulpwood and solidwood traits differ among Eucalyptus globulus genotypes

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Hamilton, MG, Greaves, BL, Potts, BM and Dutkowski, GW 2007 , 'Patterns of longitudinal within-tree variation in pulpwood and solidwood traits differ among Eucalyptus globulus genotypes' , Annals of Forest Science, vol. 64 , pp. 831-837 , doi: 10.1051/forest:2007064.

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Abstract

Wood discs were sampled from 6 heights up the stem of 248 trees representing 10 subraces and 116 families grown in an E. globulus base-population progeny trial. The lower stem had the least favourable wood properties for kraft pulpwood and most solidwood applications: bark was thickest, basic density was lowest and kino, decay and shrinkage traits were greatest at or below 12% of tree height. Significant genetic differences at the subrace level were revealed in diameter, bark thickness, basic density, decay and gross shrinkage and at the family within subrace level in diameter, basic density and decay. However, subrace-by-height-category interactions in bark thickness, basic density, decay and gross shrinkage indicated that differences among subraces were dependent on height in these traits. Examination of longitudinal trends revealed some evidence that the zone of thick basal bark extended further up the stem in thicker-barked subraces and that the Southern Tasmania subrace might be less effective than other subraces in restricting the longitudinal spread of decay after infection.

Item Type: Article
Authors/Creators:Hamilton, MG and Greaves, BL and Potts, BM and Dutkowski, GW
Journal or Publication Title: Annals of Forest Science
ISSN: 1286-4560
DOI / ID Number: 10.1051/forest:2007064
Additional Information:

BM Potts.

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