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genetic resistance

Catalogue: GRDC Research Summaries
Deliverables include validated molecular markers for key priority traits identified by Australian canola breeders group, leading to novel genotypes adapted to Australian environments... Targeted key traits will include blackleg resistance, tolerance to drought and shatter resistance... Efforts need to be made to meet such challenges...
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Catalogue: GRDC Updates
Screening for phomopsis (Diaporthe toxica) resistance in albus lupins cowley.. The overall goal of the research is to improve management options for farmers and to assist in the breeding of phomopsis-resistant cultivars... %germination indicated by dashed line; n=300 for each category, LSD5%=6.331; %infected seed indicated by solid line; n=150 for each category, LSD5%=7.581 Screening techniques In 2007 a set of 45 breeding lines, landraces and varieties were subjected to a range of screening assays to determine varietal response and to assess the suitability of each screening procedure...
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Catalogue: GRDC Final Reports
The material is now at the F6 stage with selected lines showing promising levels of resistance in both field and seedling screens (up to 86% reduction in disease severity compared to EGA Bellaroi )... Significant field resistance to CR has been successfully transferred into durum wheats from hexaploid sources (up to 86% reduction in CR severity compared to EGA Bellaroi )... The project has also developed some lines which appear to have promising levels of resistance to FHB. Once backcrossed and incorporated into commercial varieties post-project this material should prove valuable in an integrated management system to control both CR and FHB...
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Catalogue: GRDC YouTube channel
" The value of genetic resistance in disease management in the HRZ - Nick Poole (Part 3 of 3) 12 July 2011.. The value of genetic resistance in disease management... Technology to reduce spray drift GCTV: Drift Reducing Technology..
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Catalogue: Ground Cover
During a recent visit to the US, Dr Christopher visited several plant breeding facilities including those developing Russian wheat aphid (RWA) resistant germplasm for use in Australian-adapted wheats and barleys in the event of an incursion... RWA first arrived in the US in 1986, and it took eight years for plant breeders to develop and deploy varieties with resistance to the pest... For pests and pathogens where plant resistance is identified as the most appropriate protection strategy, preserving resistance once it has been developed is an ongoing challenge...
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Catalogue: GRDC Final Reports
The pilot project was motivated by severe outbreaks of powdery mildew of barley in Western Australia (WA) and widespread fungicide resistance... The project made contact with leading researchers, undertook a WA pathotype survey to determine the race structure of the pathogen, and enabled an overview of which resistance genes remain effective against powdery mildew isolates... The results from the project underline the importance of conducting variety trials across multiple locations to better predict their performance when grown over a wide area...
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Catalogue: GRDC Final Reports
Yield loss can be severe even with low levels of CR when combined with drought stress... The increased genetic resistance available to bread wheat growers, once the results of this project are released through wheat breeders, will enable increased yield and quality of wheat and barley to occur in the presence of the stubble borne disease, CR. Stubble retention has resulted in higher disease carry over between crops, and a dry finish to the season results in severe yield losses, particularly in more marginal cropping areas... The knowledge obtained through this project has enabled a selection of populations to be targeted for their superior ability to transfer high levels of resistance to progeny, coupled with some potential for combined agronomic traits, increasing their usefulness to breeders...
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