The line is pretty thick. For selective breeding, the end result still needs to be capable of consecutive propagation. The seeds you select have to be grown int

The line is pretty thick. For selective breeding, the end result still needs to be capable of consecutive propagation. The seeds you select have to be grown into a full plant that actually exists and then produces its own viable seeds and it has to do this for multiple generations. With GMOs, being able to DRM the seeds is widely considered a feature.