High-precision chronology for Central American maize ...
2017-8-22 · Maize was initially domesticated in the Balsas region of Mexico ∼9,000 y ago, but it remains unclear when this globally important cultigen became a staple crop in the Americas. We demonstrate that highly productive maize varieties were present in Central America outside the natural distribution of ancestral teosinte populations [ Zea mays subspecies (ssp.) parviglumis ] by ∼4,340 calendar ...
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