Heres an article about GM wheat growing in the wild.
The Mexicans are also thinking of ways to try and preserve their corn varieties.
OK, this wheat is "growing wild" after the original strain was supposed to be destroyed. Obviously it hasn't caused sterility or the plants wouldn't exist. Unless someone has a "stash" of GMO wheat they have decided to grow, for whatever reason. I still see no scientific evidence that this is harmful to humans, or even to wheat. It is simply resistant to the effects of herbicide, specifically Roundup. How is this a problem? Are you worried that wheat will take over the planet?
The article further states that the only real problem with this is the fact that some other countries have banned GMO's and won't import our wheat into their country. Gee, that IS too bad. We will have an abundance of cheap food, while they will scramble for expensive non GMO food. My heart bleeds, truly. I'm betting that if they have a wheat shortage, they'll become GMO eating mofo's. Hunger is an amazing motivator.
Lastly, I read the lead-ins for some of the other articles on the page. They were all filled with the same "may", "could" and "possibly" qualifiers I mentioned before, no proof.
I remain unconvinced.