Journal article
Wheat grain quality under increasing atmospheric CO 2 concentrations in a semi-arid cropping system
N Fernando, J Panozzo, M Tausz, RM Norton, GJ Fitzgerald, S Myers, C Walker, J Stangoulis, S Seneweera
Journal of Cereal Science | Published : 2012
Abstract
We investigated wheat (Triticum aestivum) grain quality under Free Air CO 2 Enrichment (FACE) of 550 ± 10% CO 2 μmol mol -1. In each of two full growing seasons (2008 and 2009), two times of sowing were compared, with late sowing designed to mimic high temperature during grain filling. Grain samples were subjected to a range of physical, nutritional and rheological quality assessments. Elevated CO 2 increased thousand grain weight (8%) and grain diameter (5%). Flour protein concentration was reduced by 11% at e[CO 2], with the highest reduction being observed at the late time of sowing in 2009, (15%). Most of the grain mineral concentrations decreased under e[CO 2] - Ca (11%), Mg (7%), P (11..
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Funding Acknowledgements
Research at the AGFACE facility is jointly run by the Victorian State Government Department of Primary Industries and the University of Melbourne, with crucial additional funding by the Grains Research and Development Corporation and the Australian Commonwealth Department of Agriculture, Fisheries and Forestry. Additional support by the International Plant Nutrition Institute is gratefully acknowledged. We thank Mahabubur Mollah, Russel Argall, Peter Howie, Nathan Neumann and Dileepa Jayaweera for their support in various stages of the experiment. We also thank Victor Raboy, United States Department of Agriculture for assistance with the phytate measurements.