Linking wheat grain quality to environmental processes

Garry O’Leary1, Cassandra Walker1, Joe Panozzo1, Thabo Thayalakumaran2, Malcolm McCaskill3, James Nuttall1, Kirsten Barlow4, Brendan Christy4 and Senthold Asseng5

1 Agriculture Victoria, 110 Natimuk Road, Horsham, VIC 3400 garry.oleary@ecodev.vic.gov.au gjoleary@yahoo.com, 
2 AgriBio, 5 Ring Road, Bundoora, VIC 3083,
3 Agriculture Victoria, 915 Mount Napier Road, Hamilton, VIC 3300,
4 Agriculture Victoria, 124 Chiltern Valley Road, Rutherglen, VIC 3685 Australia Present address: Precision Agriculture, 113 High Street Rutherglen, VIC 3685,
5 University of Florida, Gainesville, FL 32611-0570, USA

Abstract:

Maintaining high quality grain from Australian dryland production systems is under threat from three main environmental factors.  These are rising atmospheric CO2 concentrations, increasing frequency of drought and higher temperatures both as average increase and more frequent heat waves.   For wheat, we propose a new hypothesis and simulation model for predicting the environmental effects on the synthesis of glutenin and gliadin proteins, two important quality parameters which control end-use properties.  This model is applicable for the diverse environments encountered in Australia and France.  Mechanistically linking changes in composition of these rheologically-important proteins to environmental conditions should support targeted breeding selection of suitable genes to help maintain grain quality in wheat and provide a marketing edge for Australian grain.

Host

The Australian Society of Agronomy is the professional body for agronomists in Australia. It has approximately 500 active members drawn from government, universities, research organisations and the private sector.

Photo Credits

David Marland Photography david_marland@hotmail.com Graham Centre for Agricultural Innovation, Charles Sturt University

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