Sites Reporting Direct Radiocarbon Measurements of Barley Grains (IMAGE)
Caption
Map of Eurasia shows the oldest radiocarbon-measured dates (B.C.) for individual grains of barley recovered from each region. Wheat and barley arrived in South Asia about a millennium before they arrived in East Asia. Free-threshing wheats spread to China along a route to the north of the Tibetan Plateau. Naked barley is likely to have been introduced to China via southern highland routes that remain to be identified.
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Image: Courtesy of<i> PLOS One</i>
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Media usage with credit to <i>PLOS One</i>
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