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Abstract
Genetic parameters and genotype by environment interactions for wood properties of 13-year-old Pinus radiata were determined by sampling two progeny trials on contrasting sites in the southern slopes of New South Wales, Australia. Heritability of green and basic density were determined together with dynamic modulus of elasticity (MOE) measured using TreeTap. The phenotypic variance in MOE (CV 17-18%) was almost three times that of basic density. MOE and basic density were highly heritable at both sites (h2 0.57 & 0.79 for MOE & 0.59 and 0.85 for density). There was a moderately strong genetic correlation between MOE and basic density (0.64 across-sites). No genotype x environment interaction was detected in MOE or basic density. Basic density and MOE were lower on the warmer, lower rainfall site.
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Details
1 Fenner School of Environment and Society, Australian National University, Canberra ACT 0200, Australia; Carter Holt Harvey Wood Products Australia, PO Box 330, Mount Gambier SA 5290, Australia
2 Forests NSW, PO Box 46, Tumut NSW 2720. Centre for Plant Conservation Genetics, Southern Cross University, PO Box 157, Lismore NSW 2480, Australia; Visiting Fellow, Fenner School of Environment and Society, Australian National University, Canberra ACT 0200, Australia
3 Fenner School of Environment and Society, Australian National University, Canberra ACT 0200, Australia
4 Post Retirement Research Fellow, CSIRO Plant Industry, PO Box 1600, Canberra ACT 2601, Australia; Visiting Fellow, Fenner School of Environment and Society, Australian National University, Canberra ACT 0200, Australia