Grains Research and Development

GroundCover Issue 127 - Wheat pre-breeding

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  • Paddock-ready traits for troublesome soils

    Ground Cover

    Photo of Dr Stuart Roy

    Article Date
    06.03.2017
    Region
    South, West
    Author(s)
    Dr Stuart Roy

    Various soil constraints limit the grain yield of wheat and barley, often without obvious crop symptoms. Improving the technical capacity to map plant responses to soil constraints is an integral part of developing paddock-ready salt-tolerance traits

  • The push to lift photosynthesis efficiency

    Ground Cover

    Graphic showing long-term trend in wheat yields

    Article Date
    06.03.2017
    Region
    Overseas, South
    Author(s)
    Dr Gio Braidotti

    Researchers from six Australian institutions are involved in multinational projects to use photosynthesis to increase wheat's yield potential as part of the International Wheat Yield Partnership

  • Quality a key to profitability

    Ground Cover

    Genetic variation in resistance to pre-harvesting sprouting (domrancy trait)

    Article Date
    06.03.2017
    Region
    Overseas, South, West
    Author(s)
    Dr Gio Braidotti

    Grain-quality defects such as late maturity alpha-amylase (LMA) and black point have a genetic bass, allowing the incidence risk to be significantly reduced through breeding

  • Genetic technologies driving varietal improvement

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    Photo of Juan Jutter, GRDC general manager genetic technologies

    Article Date
    06.03.2017
    Region
    North, South, West
    Author(s)
    Dr Juan Juttner

    For 25 years, the GRDC’s primary objective has been to invest in the discovery, development and delivery of innovative research to enhance Australian grain growers’ profitability and sustainability. It has been a quarter century that has seen the emergence of multiple new technical capabilities with potential (although still being tested) implications, opportunities and challenges for our industry.

  • Deep-sowing wheat trait identified

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    Photo of Dr Greg Rebetzke

    Article Date
    06.03.2017
    Region
    South, West
    Author(s)
    Gio Braidotti

    Novel wheat lines that establish strongly when sown early into dry soils have been developed using a package of genes that modify the growth characteristics of the first shoot – the coleoptile.

  • Dry soils and early drought

    Ground Cover

    Graphic showing leaf area, above-ground biomass and grain yield when exposed to early season drought

    Article Date
    06.03.2017
    Region
    South, West
    Author(s)
    Dr Jairo Palta, University of Western

    The trend towards declining early winter rainfall is especially noticeable in Western Australia, where it has been a steady trend for more than 100 years. As a consequence of this declining winter rainfall, wheat crops that are sown at the onset of autumn are exposed to increased risk of early season drought.

  • The genetic arsenal for root lesion nematodes

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    Photo of Professor John Thompson, Centre for Crop Health, USQ, and research fellow Jason Sheedy

    Article Date
    06.03.2017
    Region
    North, Overseas, South
    Author(s)
    Professor John Thompson

    Genetic sources of resistance and tolerance to root lesion nematodes have been identified in wheat germplasm sourced from around the world

  • Drought heat and frost tolerance a question of stress management

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    Photo of Dr Rudy Dolferus at CSIRO Phytotron facility at Black Mountain, Canberra

    Article Date
    06.03.2017
    Region
    South
    Author(s)
    Dr Rudy Dolferus, Dr Harriet Sangma, Xiaomei Wallace, Sue Kleven and Carol Harding, CSIRO

    From early flowering to maturity the grain yield of Australian wheat crops is challenged by a range of suboptimal growth conditions: frosts, droughts, heat and cold spells. To stabilise grain yields, more resilient wheat varieties are required that can reproduce under a range of adverse conditions.

  • Wheat root traits for water-limited environments

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    Photo of wheat genotypes in standard yield plots in the field

    Article Date
    06.03.2017
    Region
    North
    Author(s)
    Dr Jack Christopher

    Australia is a drought-prone continent, so improving crop adaptation to water-limited environments is a major breeding target.

  • Weed-competitive plants on the way

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    Photo of high vigour wheat (right) and low vigour counterparts

    Article Date
    06.03.2017
    Region
    South, West
    Author(s)
    Dr Greg Rebetzke

    With herbicide resistance becoming even more widespread, it is likely that genetics can give wheat a competitive advantage against weeds