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resistance source

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Catalogue: GRDC Updates
Blackleg: developing a prioritised management strategy.. Newly deployed novel sources of resistance remain effective for a number of years before virulent blackleg isolates increase in frequency to a level where significant disease results... We can use the fungal life traits to manipulate the fungal population...
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Catalogue: GRDC Research Summaries
Nine initial backcrosses from this material have been conducted with single plant selections based on CR resistance planned under this project... Eleven crosses between four other hexaploid resistance sources (Sunco, IRN497, W21MMT70 and Alsen) and advanced durum lines have also been conducted... At each subsequent generation these crosses have been selected for increasing resistance to crown rot under field conditions...
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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 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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