Quantitative genetic control of economic traits in Eucalyptus globulus. Eucalyptus globulus is the most important plantation eucalypt in Australia and a model for tree genetic research. The project aims to study the quantitative genetic architecture of this species, focusing on traits of economic significance, and provide new insights into: the relative importance of non-additive genetic effects, including maternal and reciprocal effects; the importance of indirect genetic effects, particularly ....Quantitative genetic control of economic traits in Eucalyptus globulus. Eucalyptus globulus is the most important plantation eucalypt in Australia and a model for tree genetic research. The project aims to study the quantitative genetic architecture of this species, focusing on traits of economic significance, and provide new insights into: the relative importance of non-additive genetic effects, including maternal and reciprocal effects; the importance of indirect genetic effects, particularly on the competitive interactions amongst trees; and the genetics of traits impacting the production of emerging plantation products such as veneer. This information is needed to improve genetic evaluation models and to better target germplasm to environments and products.Read moreRead less
Quantitative genetics of Eucalyptus globulus. Eucalypt plantations in Australia have expanded rapidly over the last decade. With increasing market competition from overseas plantations for both pulp and solid wood products, Australia must maintain a competitive edge through efficiencies in production and product quality. Breeding and deployment of genetically superior planting stock is part of the solution. With global climate chance and requirements for re-afforestation in drier zones, there ....Quantitative genetics of Eucalyptus globulus. Eucalypt plantations in Australia have expanded rapidly over the last decade. With increasing market competition from overseas plantations for both pulp and solid wood products, Australia must maintain a competitive edge through efficiencies in production and product quality. Breeding and deployment of genetically superior planting stock is part of the solution. With global climate chance and requirements for re-afforestation in drier zones, there is an increasing requirement to genetically improve drought tolerance. This project will provide genetic information and strategies to back Eucalyptus globulus breeding and deployment programs for traditional as well as drier environments. Read moreRead less
Environmental and genetic control over blackwood (Acacia melanoxylon) timber colour, density, and recovery. The project will investigate the roles of environment and genetics in the expression of wood characteristics in blackwood. It will determine the potential heritability of valuable blackwood wood traits and provide a sound understanding of the basis of colour expression. Heartwood characteristics, particularly colour, density, ring width and knottiness determine the commercial value of blac ....Environmental and genetic control over blackwood (Acacia melanoxylon) timber colour, density, and recovery. The project will investigate the roles of environment and genetics in the expression of wood characteristics in blackwood. It will determine the potential heritability of valuable blackwood wood traits and provide a sound understanding of the basis of colour expression. Heartwood characteristics, particularly colour, density, ring width and knottiness determine the commercial value of blackwood. The limited research on these characteristics, all undertaken outside Australia, points to combined genetic and environmental control. By understanding the relative importance that environmental conditions and genetic material have in producing desirable wood traits, growers will be better able to realise the full commercial value of blackwood.Read moreRead less
Selection and deployment of browsing resistant Eucalyptus globulus and Eucalyptus nitens. Marsupial browsing is a significant problem for eucalypt plantation establishment in Australia. To date, browsing control has relied on the use of 1080 pesticide, but through political and social pressure this will cease in Tasmanian State Forests by December 2005. To develop new approaches to integrated pest management, we will explore the use of natural plant resistance to marsupial browsers. We will dete ....Selection and deployment of browsing resistant Eucalyptus globulus and Eucalyptus nitens. Marsupial browsing is a significant problem for eucalypt plantation establishment in Australia. To date, browsing control has relied on the use of 1080 pesticide, but through political and social pressure this will cease in Tasmanian State Forests by December 2005. To develop new approaches to integrated pest management, we will explore the use of natural plant resistance to marsupial browsers. We will determine the genetic and chemical basis of seedling resistance in Eucalyptus globulus and E. nitens, and investigate the stability of resistance though tree development and across different sites. Resistant germplasm will be identified and tested in operational plantings.Read moreRead less
Unravelling the relationship between growth and wood properties in temperate eucalypts. The most important biological traits affecting profit in eucalypt plantations grown for pulpwood are growth, wood density and pulp yield. Shrinkage and collapse are important for timber production. Little information is available on the size and direction of the correlations between these traits, yet they are important in determining selection response in breeding as well as environmental impacts on pulp and ....Unravelling the relationship between growth and wood properties in temperate eucalypts. The most important biological traits affecting profit in eucalypt plantations grown for pulpwood are growth, wood density and pulp yield. Shrinkage and collapse are important for timber production. Little information is available on the size and direction of the correlations between these traits, yet they are important in determining selection response in breeding as well as environmental impacts on pulp and sawlog yield. The collaborating growers and breeders have brought together a unique base of Eucalyptus globulus and E. nitens field trials that will allow an integrated quantitative and molecular genetic study of the interrelationships amongst these key profit traits.Read moreRead less
Linking plant genetics and chemistry to maximise tree production in the softwood industry. This project aims to test a ‘gene to plantation’ approach for the management of pests in softwood forestry. The project aims to focus on the stripping of bark from Pinus radiata trees by mammals: a major threat to tree productivity in many regions of Australia and an economic burden for forestry companies. The project aims to use a wide complement of P. radiata germplasm to link genetics, bark defensive ch ....Linking plant genetics and chemistry to maximise tree production in the softwood industry. This project aims to test a ‘gene to plantation’ approach for the management of pests in softwood forestry. The project aims to focus on the stripping of bark from Pinus radiata trees by mammals: a major threat to tree productivity in many regions of Australia and an economic burden for forestry companies. The project aims to use a wide complement of P. radiata germplasm to link genetics, bark defensive chemistry and susceptibility to damage. It aims to identify genotypes with increased resistance, unravel defensive tree traits, screen for genetic markers and identify specific gene regions correlated with trait variation, and examine cross-correlations with other major tree productivity traits.Read moreRead less