J. Giles Waines clarifies wheat domestication:
“World wide wheat species” do not descend from einkorn wheat Triticum monococcum (AmAm), first cultivated close by Gobekli. The source of the AuAu genome in BBAuAu tetraploid and BBAuAuDD hexaploid wheats is a wild diploid species, Triticum urartu, that was never cultivated as far as we know, nor domesticated. It does grow in the vicinity of Urfa, Turkey, and is more drought tolerant than einkorn. The source of the BB genome that provided the egg of the initial hybrid, and hence the extra genes for mitochondria and chloroplasts is thought to be an ancestor of present day Aegilops speltoides, which also grows near Urfa and Harran.