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wheat breeder

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Catalogue: GRDC Final Reports
The effects of genes on traits in wheat of commercial importance were estimated using large plant breeding data sets, diagnostic markers and sophisticated statistical methods... The earliest successes occurred with the genes controlling grain quality in wheat, in particular enabling wheat breeders to select against alleles, or variants, of the glutenin and puroindoline genes that had negative effects on dough rheology traits (dough strength and dough extensibility) and on milling yield... It is suspected that Glu-D3 might interact with storage protein activator (SPA) genes the project team has begun typing the same lines used for Glu-D3 with a diagnostic marker developed by French scientists for SPA-B. Wheat breeding collaborators in Australian Grain Technologies (AGT) and LongReach have given this a high priority, because interactions between SPA and glutenin genes might explain why cultivars such as Bolac have higher than expected grain quality, while the reverse occurs for cultivars such as H45 ...
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Catalogue: GRDC Research Summaries
Combinations of genes determine the classification of wheat into classes from Prime Hard to Feed,influence time of flowering from different sowing dates at different locations, determine disease resistance, and ultimately influence grain yield... Understanding the combinations of genes that produce elite varieties enables Australian wheat breeders to substantially accelerate the rate of genetic progress in breeding programs... Utilisation by breeders of the information generated is rapid...
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Catalogue: GRDC Research Summaries
Combinations of genes determine the classification of wheat into classes from Prime Hard to Feed,influence time of flowering from different sowing dates at different locations, determine disease resistance, and ultimately influence grain yield... Understanding the combinations of genes that produce elite varieties enables Australian wheat breeders to substantially accelerate the rate of genetic progress in breeding programs... Utilisation by breeders of the information generated is rapid...
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Catalogue: GRDC Media
WA typically produces 40 per cent of the national wheat crop and of this approximately 95 per cent is sold overseas, mostly to the Asian and Middle Eastern markets, so it's important to determine and meet market needs... Average annual growth in wheat productivity in Australia has been about one per cent for the 20th century, until the 1980s, with the agronomic breakthrough associated with minimum tillage, when it became closer to four per cent, of which a quarter is attributed to better cultivars developed by wheat breeders... Senior InterGrain Wheat Breeder, Robin Wilson, says that the blend of traditional breeding with molecular marker techniques provides advantage in that breeders can better target genetic combinations they need to deliver simultaneously on yield, disease resistance, stress tolerance and quality...
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Catalogue: Ground Cover
Diagnostic advances help shut down costly wheat defect.. Many scientists were sceptical when Dr Daryl Mares reported a wheat quality defect that could cause low falling number in the absence of pre-harvest rainfall... Dr Mares and his research group - Dr Kolumbina Mrva, Margaret Pallotta, Dr Klaus Oldach and Dr Judy Cheong - continue their role as lead protagonists in the fight to detect LMA before new wheat varieties reach Australian paddocks and cause the downgrade of otherwise normal-looking grain...
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Catalogue: GRDC Media
John Sheppard, GRDC northern panellist and wheat breeder who collaborated with the Cooks for many years says new varieties wouldn't happen without trial hosts such as the late Allan Cook and his wife Muriel, their son Rowland and his wife Mary, and grandson Chris and his wife Jade... Mr Sheppard says the family has been involved in research, development and extension for over 40 years with Allan Cook paving the way as a leading seed producer for the then State Wheat Board. ".. Mr Sheppard says Rowland Cook hosted a memorable Wheat Breeding Assembly tour which set the benchmark for field walks. "..
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Catalogue: GRDC Final Reports
Blade, Kite, EGA Eagle Rock, and Sloop SA barley showed tolerance to metribuzin, exhibiting little change in seedling density and anthesis dry matter (DM) when treated with metribuzin (187.5 and 375 g/ha)... Estimates of regression parameter B (slope s.e.) for seedling density (plants/m2) and shoot DM (g/m2) of wheat genotypes treated with metribuzin (0, 187.5, and 375 g/ha) at a eld site at Cleve in 2004 Two-tailed t-tests were performed to compare differences in B (slope) values with Spear, a sensitive genotype... There is a need to identify alternative sources of metribuzin tolerance, which can be incorporated into Australian wheats...
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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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Catalogue: GRDC Publications
6 AGP00010: Validation of late sowing to identify heat stress tolerance in wheat and investigation of QTL for heat stress tolerance .................................................................................................................................................................................... In summary, the project will provide valuable genotype information and deliver new genetic resources to Australian wheat breeders... Overall, the approach has a strong applied orientation aimed at crop improvement...
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Catalogue: GRDC Media
WA typically produces 40 per cent of the national wheat crop and of this approximately 95 per cent is sold overseas, mostly to the Asian and Middle Eastern markets, so it's important to determine and meet market needs... Average annual growth in wheat productivity in Australia has been about one per cent for the 20th century, until the 1980s, with the agronomic breakthrough associated with minimum tillage, when it became closer to four per cent, of which a quarter is attributed to better cultivars developed by wheat breeders... Senior InterGrain Wheat Breeder, Robin Wilson, says that the blend of traditional breeding with molecular marker techniques provides advantage in that breeders can better target genetic combinations they need to deliver simultaneously on yield, disease resistance, stress tolerance and quality...
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