Elevated CO2 alters grain quality of two bread wheat cultivars grown under different environmental conditions
Nimesha Fernando, Joe Panozzo, Michael Tausz, Robert M Norton, Nathan Neumann, Glenn J Fitzgerald, Saman Seneweera
Agriculture Ecosystems & Environment | ELSEVIER SCIENCE BV | Published : 2014
Bread wheat (Triticum aestivum L. cv. Yitpi and cv. Janz) was grown under field conditions in the Australian Grains Free-Air CO2 Enrichment (AGFACE) facility. Ambient [CO2] (a[CO2], ∼384μmolmol−1) and elevated [CO2] (e[CO2], ∼550μmolmol−1) were combined with two soil water levels (rain-fed and irrigated) and two times of sowing (TOS) in three consecutive years to provide six environments (2007-TOS1, 2007-TOS2, 2008-TOS1, 2008-TOS2, 2009-TOS1, 2009-TOS2). Grain samples were assessed for a range of physical, nutritional and dough rheological properties. The effect of e[CO2] on thousand grain weight (TGW) was significantly different in each growing environment: TGW was significantly increased u..View full abstract
Research at the AGFACE (Australian Grains Free Air CO<INF>2</INF> Enrichment) facility is jointly run by the Victorian State Department of Environment and Primary Industries (DEPI) and the University of Melbourne (UM) and supported by the Grains Research and Development Corporation and the Australian Commonwealth Department of Agriculture, Fisheries and Forestry (DAFF; Climate Chage Research Program). Additional support for grain mineral analysis by the International Plant Nutrition Institute is gratefully acknowledged. The field experiments are run by Mahabubur Mollah (Research Engineer; CO<INF>2</INF> exposure technology) and the team of field technicians led by Russel Argall. Thanks to Peter Howie, Sabine Tausz- Posch, Cassandra Walker and Dileepa Jayaweera for their support in various stages of the experiment. Nimesha Fernando is supported by a Melbourne International Research Scholarship and a Melbourne International Fee Remission Scholarship.