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The Geographical origins (A) and genomic relationships (B) of the 108 maize landraces used as paternal parents of the F1 populations. MH, Mexican Highland; ML, Mexican Lowland; SH, South American Highland; SL, South American Lowland. In (A), the larger dots represent physical positions of the two field trials, and the smaller dots represent physical positions where the 108 maize landraces were collected.
