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Independent lines of evidence of a genetic relationship between acoustic wave velocity and kraft pulp yield in Eucalyptus globulus

Hamilton, MG, Freeman, JS ORCID: 0000-0003-1166-9976, Blackburn, DP ORCID: 0000-0002-4621-080X, Downes, GM, Pilbeam, DJ and Potts, BM ORCID: 0000-0001-6244-289X 2017 , 'Independent lines of evidence of a genetic relationship between acoustic wave velocity and kraft pulp yield in Eucalyptus globulus' , Annals of Forest Science, vol. 74 , pp. 1-10 , doi: 10.1007/s13595-017-0617-2.

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Abstract

Key message:Multiple lines of evidence suggest acoustic wave velocity (AWV) would provide a rapid and efficient method to indirectly select for superior pulp yield in Eucalyptus globulus breeding programs.Context:Eucalyptus globulus is one of the most widely planted hardwood species in temperate regions of the world and is primarily grown for pulpwood.Aims:To determine if acoustic wave velocity (AWV) can be used to indirectly select for kraft pulp yield in E. globulus.Methods:Genetic group effects, additive and non-additive variance components, and genetic correlations were estimated for AWV and pulpwood traits, including Kraft pulp yield. In a separate trial, the relative position of quantitative trait loci (QTL) for these traits was compared.Results:Estimated narrow-sense heritabilities for AWV and pulp yield were both 0.26, and these traits were strongly genetically correlated (0.84). Furthermore, co-located QTL for these traits were identified. Further evidence that AWV could be used to indirectly select for pulp yield was provided by the ranking of genetic groups - Otways and King Island had the highest AWV and pulp yield and Strzelecki and Tasmania the lowest. There was no evidence of dominance variation in wood property traits.Conclusion:Together, these findings suggest that AWV could be used as a selection criterion for kraft pulp yield in E. globulus breeding programs.

Item Type: Article
Authors/Creators:Hamilton, MG and Freeman, JS and Blackburn, DP and Downes, GM and Pilbeam, DJ and Potts, BM
Keywords: genetics, acoustic, kraft pulp, eucalyptus globulus, breeding, heritability, wood property, dominance, quantitative trait loci, genetic correlation
Journal or Publication Title: Annals of Forest Science
Publisher: E D P Sciences
ISSN: 1286-4560
DOI / ID Number: 10.1007/s13595-017-0617-2
Copyright Information:

Copyright 2017 INRA and Springer-Verlag France

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