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The fight over the world's food systems
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by Dennis T. Avery
In the midst of the worst global grain shortage in decades, two lines of Australian biotech wheat have out-yielded current wheats by 20 percent - even under drought stress.
"Around the world, 35–50 percent of the wheat-growing areas are under drought risk. The number of drought-affected wheat growing areas is likely to increase with the effects of climate change" John Brumby, of Victoria, Australia told his audience. "These initial results are very promising, and suggest that these genetically modified wheat lines may be part of the solution to help farmers maintain and improve their crop yields in a changing global environment."
Australia is the world's driest continent and Victoria's wheat crop was significantly reduced by drought in 2006/2007. U.S. wheat stocks were cut to an 11-year low this winter by drought that spread last year from Texas through bone-dry Missouri and nearly to the Canadian border.
Researchers are also working on heat-tolerant wheat varieties, examining wild relatives of the wheat plant for DNA that would help wheat to tolerate higher temperatures for longer periods without sacrificing yield. Biotechnology would permit such DNA to be inserted into wheat varieties that already have high yields and good baking characteristics.
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