Two opposing models currently dominate Near Eastern plant domestication research. The core area-one event model depicts a knowledge-based, conscious, geographically centered, rapid single-event domestication, while the protracted-autonomous model emphasizes a noncentered, millennia-long process based on unconscious dynamics. The latter model relies, in part, on quantitative depictions of diachronic changes (in archaeological remains) in proportions of spikelet shattering to nonshattering, towards full dominance of the nonshattering (domesticated) phenotypes in cultivated cereal populations. Recent wild wheat genome assembly suggests that shattering and nonshattering spikelets may originate from the same (individual) genotype. Therefore, their proportions among archaeobotanical assemblages cannot reliably describe the presumed protracted-selection dynamics underlying wheat domestication. This calls for a reappraisal of the “domestication syndrome” concept associated with cereal domestication.
Bibliographical noteFunding Information:
We thank Drs. Guy Golan and Harel Bacher for critical reading of the manuscript and Professor Ehud Weiss for kindly providing images of archaeobotanical samples for Figure 1. S. A. is the incumbent of the Jacob & Rachel Liss Chair in Agronomy.
© 2022 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd.
- brittle rachis spike
- domestication syndrome
- seed dispersal
- shattering vs. nonshattering spike
- wheat domestication