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Genetic distance (Nei, 1973) of wild, managed in situ and cultivated populations of (A) Escontria chiotilla (based on Tinoco et al., 2005), (B) Polaskia chichipe (Otero-Arnaiz et al. 2005a; Lucio, 2005) and (C) Stenocereus stellatus (based on J. Cruse et al., University of Georgia, USA, unpubl. res.) from Central Mexico.
