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
Pest Status and Management of a Creiss psyllid in Eucalyptus plantations. Research studies are required on the ecology and epidemiology of a Creiis psyllid, recently found causing significant damage in young Eucalyptus dunnii plantations. The susceptibility to psyllid damage to a range of selected clonal types will be examined. With increasing community concerns associated with insecticide usage and to reduce costs, exploitation of natural resistance is an avenue that counters economic threat f ....Pest Status and Management of a Creiss psyllid in Eucalyptus plantations. Research studies are required on the ecology and epidemiology of a Creiis psyllid, recently found causing significant damage in young Eucalyptus dunnii plantations. The susceptibility to psyllid damage to a range of selected clonal types will be examined. With increasing community concerns associated with insecticide usage and to reduce costs, exploitation of natural resistance is an avenue that counters economic threat from herbivorous insects. Since Australia is currently planting 100,000 ha of eucalypts per year results from this project are essential to build better management strategies for reduce the impact of this and all pests on tree survival and growth.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
Wood quality improvement for spotted gum. Eucalypts are one of the world's top sources of hardwood saw and pulp logs. This project will provide a model for accelerated tree improvement for wood quality. The aim is to link genes for wood formation with wood quality phenotypes in spotted gum, a priority hardwood eucalypt for Northern Australia. The significance of the approach is time and costs saved in the deployment of plantations of higher wood quality through the circumvention of delays to gen ....Wood quality improvement for spotted gum. Eucalypts are one of the world's top sources of hardwood saw and pulp logs. This project will provide a model for accelerated tree improvement for wood quality. The aim is to link genes for wood formation with wood quality phenotypes in spotted gum, a priority hardwood eucalypt for Northern Australia. The significance of the approach is time and costs saved in the deployment of plantations of higher wood quality through the circumvention of delays to generate populations required for alternative approaches and early selection available with molecular breeding.Read moreRead less
Identification of genes controlling wood fibre properties in Eucalyptus nitens. Australian forestry is shifting to high intensity eucalypt plantations and increasingly focussing on development of breeds and clones with superior wood and pulp traits. Many of these traits are under moderate to strong genetic control and DNA markers have helped identify regions on eucalypt chromosomes that influence these traits. This project aims to identify the genes at these chromosomal locations that influence ....Identification of genes controlling wood fibre properties in Eucalyptus nitens. Australian forestry is shifting to high intensity eucalypt plantations and increasingly focussing on development of breeds and clones with superior wood and pulp traits. Many of these traits are under moderate to strong genetic control and DNA markers have helped identify regions on eucalypt chromosomes that influence these traits. This project aims to identify the genes at these chromosomal locations that influence wood fibre development and which have a strong influence on major commercial traits. The project will increase our understanding of wood and fibre development in eucalypts, and facilitate development of genetic markers to track superior genes during breeding.Read moreRead less
Potential of Corymbia torelliana hybrids for hardwood forestry and investigation of their seed dispersal by Trigona bees. Cadaghi (Corymbia torelliana) and their hybrids with spotted gums (C. variegata complex) have enormous potential for plantation forestry. These hybrids have many excellent features that make them exciting as hardwood species, such as resistence to disease, tolerance of marginal environments, good wood properties, and fast growth rates. This project will create hybrids between ....Potential of Corymbia torelliana hybrids for hardwood forestry and investigation of their seed dispersal by Trigona bees. Cadaghi (Corymbia torelliana) and their hybrids with spotted gums (C. variegata complex) have enormous potential for plantation forestry. These hybrids have many excellent features that make them exciting as hardwood species, such as resistence to disease, tolerance of marginal environments, good wood properties, and fast growth rates. This project will create hybrids between Corymbia torelliana and spotted gums to identify hybrids which are suitable for sustainable wood production on marginal agricultural lands.
An unusual feature of Cadaghi is that native Trigona bees disperse their seeds. This project will investigate this unique seed dispersal mechanism and identify features of hybrids that are not attractive to bees. This will prevent environmental problems by preventing hybrids from dispersing seeds, becoming weedy and harming the Trigona bees.
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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
Genetic variation of the vulnerable Eucalyptus argophloia, and its development for sustainable hardwood forestry in low rainfall areas. We will examine the biodiversity in a vulnerable species of eucalypt, Eucalyptus argophloia. This species is under threat due to land clearing, and only 1000 trees remain in the wild. E. argophloia has great promise for plantation timber in low rainfall areas of Northern Australia. We will breed superior varieties for plantation forestry designed to cope with cl ....Genetic variation of the vulnerable Eucalyptus argophloia, and its development for sustainable hardwood forestry in low rainfall areas. We will examine the biodiversity in a vulnerable species of eucalypt, Eucalyptus argophloia. This species is under threat due to land clearing, and only 1000 trees remain in the wild. E. argophloia has great promise for plantation timber in low rainfall areas of Northern Australia. We will breed superior varieties for plantation forestry designed to cope with climate change, low rainfall and salinity. This project will help to manage and preserve the species in the wild and create profitable and sustainable timber plantations on marginal lands.Read moreRead less
Functional genetic analysis of wood formation genes in Eucalyptus. Eucalypts are the world's most important plantation hardwood species due to their superior wood characteristics and high growth rates that make them excellent carbon sequestration platforms. Australia is the custodian of the world's natural eucalypt resource and our results will assist in their sustainable use with the potential to transform the national forestry industry by helping to streamline tree improvement efforts. This wi ....Functional genetic analysis of wood formation genes in Eucalyptus. Eucalypts are the world's most important plantation hardwood species due to their superior wood characteristics and high growth rates that make them excellent carbon sequestration platforms. Australia is the custodian of the world's natural eucalypt resource and our results will assist in their sustainable use with the potential to transform the national forestry industry by helping to streamline tree improvement efforts. This will be achieved by increasing our understanding of the development and production of wood, which will lead to increased productivity (more and better quality wood from less land). Custom designed wood also holds much promise for the production of novel biopolymers and as a renewable source for improved biofuels.Read moreRead less