I was born in the mid-60s and my memories go back to 1970 when I first helped 'dress' the seed corn (wheat and barley). My grandfather was using much the same process when he began farming around 1910.

Seed wheat, barley, potatoes and oil-seed rape (Canola) are still produced using the same breeding process we've used for several generations, but with the added benefit of having very much more accurate technical support for measuring the benefits (or lack thereof) of new strains.

Hybrid seeds through selective breeding is something very different from a single human-engineered genetic intervention.