Probably only on a million year time frame. We've coated a decent portion of the Earth's crust in crops. It's all being irradiated by the sun all day long, decade after decade, but the mutations people want aren't always appearing naturally. Some changes appear to be extremely unlikely.
Which is probably good, or we'd all probably get weird cases of allergies from strange plant mutations.
Which is probably good, or we'd all probably get weird cases of allergies from strange plant mutations.