Aha, I was about to chew the article out for not mentioning rye, but the linked paper has it :) Rye briefly shows up in the Fertile Crescent at the start of the

Aha, I was about to chew the article out for not mentioning rye, but the linked paper has it :) Rye briefly shows up in the Fertile Crescent at the start of the Neolithic, and then vanishes for several centuries before reappearing in Bronze Age Central Europe. The theory AIUI - Neolithic people tried domesticating it for a few decades and decided it sucked, and it only survived as a "volunteer" (a weed!) until Europeans rediscovered it some centuries later and gave rye growing a second chance.