After testing leaf samples from 505 plants, Wilkinson found one hybrid formed by cross-pollination between the oilseed rape and wild turnip.
From the newscientist.com
And although GM canola, or oilseed rape, is related to wild mustard, the only spread of genes so far has been to commercial non-GM rape, especially in Canada.
From the newscientist.com
Because there's no rape or murder in the wild.
From the huffingtonpost.com
The process of chloroplast transfer by repeated crossing between crop and weed, following spillage of oilseed rape seeds into fields containing the wild relative, also appears to pose a low risk.