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WikiPedia: DuPont Pioneer http://www.greenleafgenetics.com http://www.hy-line.com http://www.pioneer.com http://www.pioneer.com/ //doi.org/10.17077%2F0003-4827.8990 https://www.reuters.com/article/us-seeds-drought-i... https://ir.uiowa.edu/cgi/viewcontent.cgi?article=8...