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seedling resistance

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Catalogue: GRDC Research Summaries
Identify the most appropriate methodology of single isolate screening of resistance genes in Australian oilseed Brassica lines... To successfully breed new blackleg resistant cultivars breeders need to know which resistance genes are already deployed, which are no longer effective (pathogen has overcome resistance) and which resistance genes are to be exploited... If resistance genes are overcome by the pathogen we need to be able to tell growers which cultivars are likely to be affected and which cultivars to avoid...
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Catalogue: GRDC Final Reports
The objectives of the project were to commence investigation of novel sources of CR partial resistance and to obtain phenotypic trial data for use in genetic analysis to identify molecular markers associated with this partial resistance... Molecular markers for CR resistance have been identified in a W21MMT70/Mendos population and will be extremely useful tools for developing new varieties which incorporate this source of resistance... Partial CR resistance in the field has also been found in some lines (Sumai3 and its derivatives) which are important sources for resistance toFHB. Doubled haploid populations between two sources of CR resistance (2-49/Sunco) and between a source of FHB resistance and a CR susceptible variety (Sumai3/Batavia), have been produced...
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Catalogue: GRDC Factsheets
WESTERN AND SOUTHERN REGIONS QUANTIFY THE RISK, PADDOCK BY PADDOCK Blackleg can cause severe yield loss, but can be successfully managed... Choose a cultivar with adequate blackleg resistance for your region... If you have: high or increasing levels of blackleg in your crop (from monitoring disease levels each year); used the management practices outlined in Step 3; and sown cultivars from the same resistance group in close proximity (within 2km) for three or more years, then sow a cultivar from a different resistance group (see page 4 - Blackleg Resistance Groups)...
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Catalogue: Ground Cover
Canola growers in high-risk areas now have two extra weapons in their arsenal against the disease blackleg: the option to rotate resistance groups and a newly registered foliar fungicide, Prosaro 420 SC... It covers: determining your farm's risk of blackleg based on rainfall, canola intensity in the region and March-to-May rainfall before sowing; assessing the severity of blackleg in your crop; following best practice to reduce the risk of blackleg; and rotating blackleg resistance groups if you are in a high-risk area... Dr Marcroft says Prosaro , applied at the four-to-six-leaf stage at 375 to 450 millilitres per hectare, can significantly reduce the presence of blackleg in high disease-pressure situations in varieties with a resistance of moderately resistant to moderately susceptible (MR-MS) or weaker...
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Catalogue: Ground Cover
Canola growers in high-risk areas now have two extra weapons in their arsenal against the disease blackleg: the option to rotate resistance groups and a newly registered foliar fungicide, Prosaro 420 SC... It covers: determining your farm's risk of blackleg based on rainfall, canola intensity in the region and March-to-May rainfall before sowing; assessing the severity of blackleg in your crop; following best practice to reduce the risk of blackleg; and rotating blackleg resistance groups if you are in a high-risk area... Dr Marcroft says Prosaro , applied at the four-to-six-leaf stage at 375 to 450 millilitres per hectare, can significantly reduce the presence of blackleg in high disease-pressure situations in varieties with a resistance of moderately resistant to moderately susceptible (MR-MS) or weaker...
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Catalogue: GRDC Factsheets
Adult plant resistance is a useful trait to consider in variety selection, especially for rust resistance... Key points Adult plant resistance (Apr) to cereal fungal diseases provides protection in a crop's post-seedling stages (typically between tillering and booting, gS20-gS49)... Apr can complement a fungicide strategy by protecting, from rust, those parts of the plant most responsible for yield...
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Catalogue: GRDC Factsheets
Adult plant resistance is a useful trait to consider in variety selection, especially for rust resistance... Key points Adult plant resistance (Apr) to cereal fungal diseases provides protection in a crop's post-seedling stages (typically between tillering and booting, gS20-gS49)... Apr can complement a fungicide strategy by protecting, from rust, those parts of the plant most responsible for yield...
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Catalogue: GRDC Factsheets
Adult plant resistance is a useful trait to consider in variety selection, especially for rust resistance... Key points Adult plant resistance (Apr) to cereal fungal diseases provides protection in a crop's post-seedling stages (typically between tillering and booting, gS20-gS49)... Apr can complement a fungicide strategy by protecting, from rust, those parts of the plant most responsible for yield...
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