Journal
TRENDS IN PLANT SCIENCE
Volume 19, Issue 6, Pages 351-360Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2013.12.002
Keywords
crucial domestication traits; crop evolution traits; domestication episode; domestication syndrome traits; episodic versus protracted domestication
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'Domestication syndrome' (DS) denotes differences between domesticated plants and their wild progenitors. Crop plants are dynamic entities; hence, not all parameters distinguishing wild progenitors from cultigens resulted from domestication. In this opinion article, we refine the DS concept using agronomic, genetic, and archaeobotanical considerations by distinguishing crucial domestication traits from traits that probably evolved post-domestication in Near Eastern grain crops. We propose that only traits showing a clear domesticated-wild dimorphism represent the pristine domestication episode, whereas traits showing a phenotypic continuum between wild and domesticated gene pools mostly reflect post-domestication diversification. We propose that our approach may apply to other crop types and examine its implications for discussing the timeframe of plant domestication and for modern plant science and breeding.
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