A5090645626- Plant Physiology and Cultivation Studies
- Horticultural and Viticultural Research
- Berry genetics and cultivation research
- Plant Pathogens and Fungal Diseases
- Plant Disease Management Techniques
- Nuts composition and effects
- Plant Pathogens and Resistance
- Genetics and Plant Breeding
- Nematode management and characterization studies
- Banana Cultivation and Research
- Forest ecology and management
- Agriculture, Plant Science, Crop Management
- Plant Reproductive Biology
- Genetic and phenotypic traits in livestock
- Postharvest Quality and Shelf Life Management
- Potato Plant Research
- Growth and nutrition in plants
- Plant and animal studies
- Plant and Fungal Interactions Research
- Wheat and Barley Genetics and Pathology
- Seed Germination and Physiology
- Plant Virus Research Studies
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Plant-Microbe Interactions and Immunity
Department of Primary Industries
2022
Department of Agriculture, Fisheries and Forestry
2016
Commonwealth Scientific and Industrial Research Organisation
2004-2012
Plant Industry
2004-2012
The University of Queensland
2009-2011
Agriculture and Food
2009-2011
University of New England
2004-2010
Macadamia (Macadamia integrifolia, M. tetraphylla and hybrids) is an Australian native nut crop has a significant economic value in the food industries worldwide. Long juvenility along with traditional breeding strategies impede quick genetic improvement of this crop. The existing cultivars constitute only second to fourth generation wild germplasm rainforest. utilisation molecular markers for genomic selection genome-wide association studies may accelerate gains. Identification robust,...
In wheat, tillering and water-soluble carbohydrates (WSCs) in the stem are potential traits for adaptation to different environments of interest as targets selective breeding. This study investigated observation that a high WSC concentration (WSCc) is often related low tillering. The proposition tested was accumulation plant density dependent could be an emergent property tillering, whether driven by genotype or environment. A small subset recombinant inbred lines (RILs) contrasting grown at...
Macrophomina phaseolina causes charcoal rot in strawberry. The pathogen has a wide host range, is favored by high soil temperatures, and current fumigants are not as effective methyl bromide. Breeding strawberry cultivars resistant to M. become an important focus. Eleven were evaluated glasshouse trial for resistance isolate of phaseolina. Plants inoculated drenching the potting medium with suspension microsclerotia. Plant mortality was recorded up 23 weeks. Based on plant survival analyzes,...
Macadamia (Macadamia integrifolia Maiden and Betche M. tetraphylla L.A.S. Johnson) is an Australian-native, evergreen nut tree adapted to the subtropics. It basis of international industry producing highly valued kernels. Australia world leader in production, with about 6 million trees planted on 17,000 ha. Industry funding for Australian breeding program commenced 1996, over 3500 hybrid seedlings were produced field-planted from 1998 2003. participation has involved use grower properties...
Summary In this study we apply factor analytic methods to the analysis of diameter at breast height (DBH) 3 years for 22 trials 892 clones from four E. camaldulensis x globulus and six grandis families established throughout Australia (Queensland, New South Wales, Victoria, Tasmania Western Australia). Three factors were sufficient describe genetic variation in data set and, on average, described 86% variance within a trial. Estimated broad-sense heritability ranged 0.05 0.85, correlation...
<title>Abstract</title> Knowledge of the factors structuring populations pathogenic fungi is fundamental to disease management efforts and basic biology. High-quality short-read sequence data were obtained for 463 <italic>Macrophomina</italic> spp. isolates collected from 91 host plant species soil in 23 countries. Analyses revealed high diversity, admixture, equal mating type ratios suggesting on-going recombination. Although most tested could asymptomatically colonize strawberry, only a...
Phytophthora cinnamomi is a major pathogen in most macadamia plantations worldwide. Due to stem lesions, cankers and leaf defoliation, it results loss of productivity tree death. This study examined accessions the four Macadamia species their hybrids, produced via rooted cuttings or germinated seeds, for susceptibility canker necrotic lesions caused by P. . Plants were wound‐inoculated with agar containing The symptoms inoculated plants used characterize host variation within among...
SummaryVarious marker systems exist for genetic analysis of horticultural species. Isozymes were first applied to the woody perennial nut crop, macadamia, in early 1990s. The advent DNA markers saw development, STMS (sequence-tagged microsatellite site), RAPD (randomly amplified polymorphic DNA), and RAF fingerprinting). technique typically generates dominant markers, but within profiles, certain primers also amplify multi-allelic co-dominant that are suspected be microsatellites. In this...
Rootstock has profound effects on traits such as yield and tree size in various horticultural industries, however relatively little is known about rootstock for macadamia. In this study, 12 cultivars were propagated open-pollinated seedling clonal rootstocks, own-rooted cuttings. The same also used scions, grafted to a subset of then planted at four trial locations. preliminary analysis, accounted 19% the variance compared with 72% scion, 23% height scion. There was no interaction between...
In Australia, macadamia trees are commonly propagated by germinating rootstock seed and grafting when seedlings reach a suitable size. The production of grafted is protracted complex process, however, propagation via cuttings represents simpler faster method multiplication. Macadamias have traditionally proven difficult to propagate from cuttings, while recent developments in the process improved success rates, substantial variation rooting ability between cultivars species has been...
Abstract Knowledge of the factors structuring populations pathogenic fungi is fundamental to disease management efforts and basic biology. High-quality short-read sequence data were obtained for 463 Macrophomina spp. isolates collected from 91 host plant species soil in 23 countries. Analyses revealed high diversity, admixture, equal mating type ratios suggesting on-going recombination. Although most tested could asymptomatically colonize strawberry, only a single phylogroup caused disease....
Queensland's winter strawberry (Fragaria •ananassa Duch.) industry would benefit by having an early ripening, more profitable cultivar to replace current cultivars.'Strawberry Festival' (Chandler et al., 2000) and, recently, 'Florida Radiance' 2009) were introduced Queensland and rapidly became major early-season cultivars with fruit plant attributes desirable growers.'Florida is marketed in Australia as Fortuna'.The average size of 'Strawberry less than Radiance', but the latter difficult...
In 2014, several strawberry plants growing in commercial field beds South East Queensland, Australia, displayed a reddish/maroon interveinal discolouration and decline plant health yield. This new red leaf disorder (RLD) has since been observed to varying extents cultivars grown during winter production. An increase the number of affected by RLD occurred 2014. 2019, survey 18 farms Queensland assessed incidence severity symptoms. was up 30% blocks. Samples were screened for evidence an...
Subtropical or low-chill stonefruit species are bred at the Maroochy Research Facility in Nambour, Queensland. Superior clones evaluated different climatic regions throughout southern Queensland and northern New South Wales by cooperating growers. There is variation flowering time, harvest date fruit characteristics depending on number of chill units (CU) accumulated site. Cultivars low sites bloom earlier than cultivars high sites. Fruit shape also changes with location. Results presented...
'Nieve' is a landrace peach [Prunus persica (L.) Batsch] from the highlands of Mexico where it has been selected over many generations for adaptation to this environment. It also eating quality characteristics favoured in region. produces fruit with white skin and non-melting, flesh. Seed were imported into Australia 2009 resulting seedlings evaluated south-east Queensland tree two years. The these compared local breeding populations industry standards. use germplasm future discussed.
A rapid rate and high percentage of macadamia nut germination, together with production vigorous seedlings, are required by nurseries breeding programs. Germination nuts is typically protracted, however, rarely reaches 100%. Many studies have been conducted into but most assessed percent germination only. This study investigated the effects various treatments on rate, plant, shoot root dry weights. The tested were combinations of: (i) soaking or not seeds in a dilute fungicide solution prior...
Crown rot caused by the fungus Colletotrichum gloeosporioides (Cg) is a significant disease of strawberry (Fragaria × ananassa) in South-East Queensland, Australia. The currently controlled application fungicides to plants nurseries; however, increased host resistance desirable. Several cultivars reported show Cg overseas have been evaluated Australian National Strawberry Varietal Improvement Program. Additionally, advanced genotypes produced this program screened to: (a) identify with crown...
Macadamia is an Australian native genus, comprising of four species. Commercial cultivars for the production macadamia nuts are derived from two species, M. tetraphylla and integrifolia. The different species have unique leaf flowering patterns, due to inherent biological rhythms. Usually, has leaves in a whorl, while other three per whorl. All produce 1-2 florets at each raceme node. We identified multi-pistillate genotype ('MPM1') with irregular pattern floral architecture. progeny 'HAES...