In order to evaluate the effect of source, wheat seeds produced in México (Yaqui Valley, Sonora) and in Brazil (Passo Fundo-RS and Brasília-DF) were compared in a field trial. Brazilian cultivars CNT 7, CNT 8, CNT 10, Nobre, and 1AC 5-Maringã (Maringá) were used, being that Brasília origin took part with cultivar Maringá only. A randomized blocks design with 11 treatments in four replications was used. Seeds were treated with Benlate T and the trial was sprayed with fungicides and insecticides for controlling above-ground diseases and pests. Cultivars CNT 7, Nobre, and Maringá had their yields reduced by frost occurrence. Dry weight of seedlings was higher for cultivars Nobre and Maringá, for seed produced in México. In the remaining instances and in the evaluations of stand, number of spikes per square meter, and grain yield, no superiority was observed in seed produced in México as compared to those produced in Brazil.