It is preferable if genetically engineered crops cannot reproduce. The impact of their wild propagation should be studied first, not unleashed upon the local ecosystem.
In general, crop plants don't propagate well in the wild. The whole point of breeding a crop plant is to remove their chemical defenses (to make them edible) and to make them produce lots of edible parts. This is usually the direct opposite of what plants need to survive in the wild.
> their wild propagation
In general, crop plants don't propagate well in the wild. The whole point of breeding a crop plant is to remove their chemical defenses (to make them edible) and to make them produce lots of edible parts. This is usually the direct opposite of what plants need to survive in the wild.