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Unformatted text preview: nary change or adaptation of domesticates than did locations at different latitudes. Modified from Fig. 10.1 of ref. 1. geographic area, or from multiple independent domestications at different sites. An accumulation of recent evidence suggests to me the following generalization: that the former interpretation applies to most major Eurasian crops, the latter interpretation to many New World crops and the major Eurasian livestock species. Among New World crops, many are represented by distinct but related species in South America, Mesoamerica and the eastern United States, leaving no doubt that related species were domesticated independently in these areas (for example, beans, chenopods, chilli peppers, cotton, squashes, tobaccos and possibly amaranths). Multiple independent domestications are attested within the same species for the chilli pepper species Capsicum annuum, common bean Phaseolus vulgaris, lima bean Phaseolus lunatus and squash species Cucurbita pepo4,7,8,42. Conversely, the eight crops that founded Fertile Crescent agriculture, with the possible exception of barley, each seem to derive from only a single domestication event5,9,43–45. Evidence for separate independent do...
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This note was uploaded on 12/10/2012 for the course HORT 306 taught by Professor Staff during the Fall '08 term at Purdue University-West Lafayette.
- Fall '08