Mystery Lingers around Origin of GM Wheat in Oregon

http://blogs.scientificamerican.com/observations/2013/07/09/mystery-lingers-around-origin-of-gm-wheat-in-oregon/

ARTICLE EXCERPT:

When the fresh wheat samples arrived at her lab this spring, Carol Mallory-Smith, a weed scientist, didn’t know what to expect. The concerned farmer who sent them had contacted her because a patch of wheat had refused to die after being treated with a powerful herbicide called Roundup. “The farmer asked me if the wheat could have evolved a natural resistance to the herbicide,” says Mallory-Smith, “but I said that that wasn’t possible because of the way wheat is exposed to Roundup.” Then the grower mentioned the possibility that Monsanto’s genetically modified wheat seeds might have made their way into the field somehow.