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Catalogue: GRDC Final Reports
A potentially new gene for resistance to leaf rust in the spelt wheat Altgolder Rotkorn was located near the centromere on chromosome 1B, and genetic stocks carrying the gene and based on Australian germplasm were generated... The study demonstrated very clearly the power of Diversity Arrays Technology (DarT) in providing a rapid and cost-effective means of locating rust resistance to chromosomal regions... The cultivars will now be assessed for seedling and adult plant resistance to rust, and will undergo genetic analyses if new resistances are suspected...
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Catalogue: GRDC Final Reports
The project has succeeded in its objective of producing new stem and leaf rust resistant lines containing chromosome segments from alien species and making them available for protection of wheat crops in Australia... Recombinant lines carrying shortened alien chromosomes with Sr32, Sr2S#1 and Sr39 produced in earlier GRDC projects have been confirmed and made available to wheat breeders around Australia since 2004... , advanced backcrossed lines carrying stem rust resistance derived from three different Triticum speltoides accessions or amphiploids and two sources of leaf rust resistance from T. searsii and T. tripsacoides have been produced...
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Catalogue: Ground Cover
Charles Sturt University PhD student Felicity Harris has been investigating why winter wheat varieties produce less early season growth than main-season or spring wheat varieties... The development of wheat varieties with vigorous early season growth would go a long way towards helping boost the profitability of many of Australia's mixed farms where cereal crops are grown for grazing and grain... In her work with FarmLink Research and on her family's farm, Ms Harris had observed that winter wheats tend to have low early vigour, but she wanted to understand why and test this with replicated trials over several years...
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Catalogue: Ground Cover
The genetics of brewing better beer.. Genetic analysis shows that malting barley grown under Australian conditions requires a finer balance between malting quality and pre-harvest sprouting tolerance than its Canadian counterparts.. The market has a strong preference for the malting flavour of Canadian barley and is often willing to pay a $50-per-tonne premium for it...
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Catalogue: GRDC Final Reports
The aim of the project was to enhance capability in marker validation and implementation in the Western Australian (WA) barley breeding program, leading to more rapid development of improved varieties... Markers were used to: accelerate backcrossing; inter-cross various target traits; improve genetic value of doubled haploid (DH) lines by screening donor plants; and improve genetic gain by post-screening DH lines... Molecular markers were used to: (1) accelerate back-crossing target traits into elite genetic backgrounds; (2) inter-cross various target traits; (3) improve genetic value of DH lines by pre-screening donor plants for DH production; and (4) improve genetic gain by post-screening DH lines before field testing...
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Catalogue: GRDC Final Reports
The aim of the project was to develop closely linked molecular markers in wheat for traits that were suggested by breeders or collaborative partners at the Molecular Plant Breeding Cooperative Research Centre (MPBCRC)... All three objectives were achieved: two closely linked markers (< 20kb) to the 7A maturity locus were identified and further alleles were suggested to segregate in Australian germplasm; two markers were developed for the 2A rust gene (< 2cM) and marker density at three drought-tolerance related loci was increased by adding 53 markers out of more than 200 screened simple sequence repeats (SSRs)... The genetic map of the cross between Berkut and Krichauff can be seen as a valuable genetic resource indicated by the many projects on QTL identification in this population such as yield under drought stress, salinity in hydroponics and field and grain fructan content...
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Catalogue: GRDC Final Reports
The rationale behind the project was to further the understanding of genes and proteins involved in the cellular process known as meiosis... The major expected outcome of this project has been met in that the role the gene and protein play during bread wheat meiosis is now known... The expected outcome from this project is to understand the role of the TaASY1 gene during meiosis in bread wheat...
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Catalogue: Ground Cover
RESEARCH UPDATE Saline durum.. Dr Hare said CSIRO researchers have found a molecular marker for at least one of the key sodium exclusion genes (working with an ancient Persian wheat variety) and advanced breeding lines with this gene have been produced and are awaiting fieldtesting. ".. Log in or register to leave a comment...
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Catalogue: GRDC Final Reports
The project achieved good progress in characterising a novel herbicide-responsive switch (HRE1) including a detailed mutational analysis to determine critical nucleotides important for HRE1 activity... The project identified R. solani strains with a range of pathogenicity, a susceptible mutant and genes whose expression correlates well with resistance to R. solani... A number of transgenic lines containing the construct were generated and used for further analysis, with HRE1 activity being measured by light emitting units per plant in different tissues, during plant development and in response to important plant defence and stress signals...
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Catalogue: GRDC Publications
Growers do not have access to varieties with resistance to the key exotic pests and disease... The project will proceed in two phases... The project is about optimizing pesticide sprayapplications by: identifying spray technologies and spray settings with low risk of spraydrift, applying pesticides in accordance with latest knowledge about pest behaviour in response to pesticides andtherefore minimizes the risk of target pests developing resistance, and by using pesticides with documented efficacyagainst target pests...
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