The cultivated grains that produce larger, better, or more easily harvested seed got disproprotionately selected by the farmers, year after year, and the local climates screened out nonviable variants. :^)
Heh, I guess when I think of it that way...it is entirely possible...after all, that hybridization has been done intentionally for a long time...just wasn’t thinking of it that way.
I was thinking of a natural process!