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wheat breeding program

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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: Ground Cover
A new wheat research agreement between ICARDA, based in Syria, and CIMMYT, based in Mexico, will help consolidate the collection and use of wheat progenitors from the 'cradle of agriculture' - Central and West Asia and North Africa (CWANA) - that can provide novel genetic traits including rust resistance... The ICARDA/CIMMYT Wheat Improvement Program (ICWIP) is headed by Dr Sanjaya Rajaram, who joined ICARDA in 2005 after spending 34 years at CIMMYT, where he took over as head of the wheat breeding program from the Nobel Laureate Dr Norman Borlaug... The gene banks at both ICARDA and CIMMYT, which Australian breeders use, are also undergoing maintenance as part of ICWIP. Dr Rajaram is keen to upgrade the collection of progenitor grasses obtained from the CWANA region, as it contains wide genetic diversity that breeders can use to improve spring, facultative and winter bread wheat, and durum...
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Catalogue: GRDC Final Reports
The project has achieved significant advances in relation to the development of the International Crop Information System (ICIS) to allow implementation by Australian wheat breeding programs... Establishment of a help facility (telephone, email, web) to assist breeders implement and manage ICIS... The work aims to integrate both genotypic and phenotypic data, but in such a complex population this requires some innovative approaches...
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Catalogue: Ground Cover
Middle: Leaf rust pustules are smaller than stem rust and rarely appear on the back of the leaf... It is unlikely that all growers will apply adequate fungicide at the first sign of rust and keep the infection sufficiently under control so that the disease will not spread to neighbouring properties... Equally it is unrealistic to expect that all growers will sufficiently monitor or destroy volunteers growing between seasons to ensure that those volunteers will not harbour rust infections which may be responsible for starting new epidemics...
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Catalogue: GRDC Final Reports
The project has identified genomic regions, developed germplasm (alternative dwarfing genes, leaf-rolling, greater leaf area) and established screening methodologies (longer coleoptiles, leaf area, transpiration efficiency) targeted to improving water-use efficiency and yield under drought... The project has confirmed and/or extended genetic variation for traits with potential for use in breeding for improved performance under drought, identified the nature of inheritance for some of these traits and underlying genetic control through quantitative trait loci (QTL), and released germplasm containing genes for traits not present within Australian breeding programs... The F1 progeny were assessed in seedling trays and produced leaf-one widths ranging between 2.8 and 7.6 millimetres (mm)...
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Catalogue: Ground Cover
Dr Rajaram was born in a small village in India and gained his PhD at the University of Sydney through the Plant Breeding Institute in Narrabri on a scholarship from the Narrabri Rotary Club... While in Mexico, Dr Rajaram developed 480 high-yielding wheat varieties with in-built resistance to diseases and environmental stresses... Dr Rajaram said that while honoured to receive it, the prize recognises thousands of wheat researchers and growers around the world...
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Catalogue: GRDC Research Summaries
Rust diseases of wheat continue to cause significant losses worldwide and in Australia... Another common mechanism for resistance break-down is through introduction of new races as happened in early 2000 when a new exotic race of yellow rust pathogen was identified in Western Australia... Australian wheat breeders will be the immediate beneficiary utilization of molecular markers developed in the project, germplasm from the International Maize and Wheat Improvement Center (CIMMYT) and rust resistance information generated in Kenya and Mexico will benefit wheat growers and industries in Australia and worldwide...
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Catalogue: Ground Cover
Dr Rajaram was born in a small village in India and gained his PhD at the University of Sydney through the Plant Breeding Institute in Narrabri on a scholarship from the Narrabri Rotary Club... "His breakthrough breeding technologies have had a far-reaching and significant impact in providing more food around the globe and alleviating world hunger," Dr Quinn said... Dr Rajaram said that while honoured to receive it, the prize recognises thousands of wheat researchers and growers around the world...
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