Prehistoric sunflower (Helianthus annuus L.) domestication in Mexico
2001
Lentz, D.L. | Pohl, M.E.D. | Pope, K.O. | Wyatt, A.R.
Early remains of Helianthus annuus L. unearthed at the San Andrés site in the Gulf Coast region of Tabasco, Mexico, constitute the earliest record of domesticated sunflower. Accelerator mass spectrometry (AMS) age determinations of a large domesticated seed and achene produced dates of 4130 ± 40 years before the present (B.P.) and 4085 ± 50 B.P., respectively. These discoveries challenge the longstanding hypothesis that sunflower was domesticated in eastern North America. Moreover, when considered with other recent discoveries on plant domestication, these data suggest a reconsideration of the idea that the eastern United States was an independent hearth for domestication.
显示更多 [+] 显示较少 [-]