Hamilton, MG and Freeman, JS and Blackburn, DP and Downes, GM and Pilbeam, DJ and Potts, BM, Independent lines of evidence of a genetic relationship between acoustic wave velocity and kraft pulp yield in Eucalyptus globulus, Annals of Forest Science, 74 Article 17. ISSN 1286-4560 (2017) [Refereed Article]
Copyright 2017 INRA and Springer-Verlag France
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:||Refereed Article|
|Keywords:||genetics, acoustic, kraft pulp, eucalyptus globulus, breeding, heritability, wood property, dominance, quantitative trait loci, genetic correlation|
|Research Division:||Agricultural and Veterinary Sciences|
|Research Group:||Forestry Sciences|
|Research Field:||Tree Improvement (Selection and Breeding)|
|Objective Division:||Plant Production and Plant Primary Products|
|Objective Field:||Hardwood Plantations|
|Author:||Hamilton, MG (Dr Matthew Hamilton)|
|Author:||Freeman, JS (Dr Jules Freeman)|
|Author:||Blackburn, DP (Dr David Blackburn)|
|Author:||Potts, BM (Professor Brad Potts)|
|Deposited By:||Plant Science|
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