Fig. 1. Geographical location of 11 wild populations studied in four agricultural regions in the Yucatan Peninsula, Mexico. Populations of the southeast of Yucatan (SEYUC): San Fernando (1), Boje (2). Populations of the south of Yucatan (SYUC): Nohcacab (3), Xohuayán-1 (5), Xohuayán-2 (4). Populations of central eastern Quintana Roo (CEQROO): Nohcá (6), Kik (7), Holpat (8). Populations of the northeast of Campeche (NECAMP): Itzinté (9), Bolonchén (10), Chunchintok (11).