Magwe-Tindo J. auteur aut IRD Wieringa J. J. auteur aut IRD Sonke B. auteur aut IRD Zapfack L. auteur aut IRD Vigouroux Yves auteur aut IRD Couvreur Thomas auteur aut IRD Scarcelli Nora auteur aut IRD text journalArticle eng text/pdf born digital access The genus Dioscorea (Dioscoreaceae) contains several economically important species for human consumption, medical and pharmaceutical uses. The phylogeny of this genus is not yet fully resolved. As a result, the relationships between cultivated yams and their wild relatives are not well understood and this negatively affects the understanding of the evolution of cultivated yams. Here, we reconstructed the phylogenetic relationships of the main African cultivated species with all West African species in order to better circumscribe the crop wild relatives of African yams. Complete plastomes of 57 individuals representing all 17 known Dioscorea species from West Africa were reconstructed. Tree topologies generated using maximum parsimony and maximum likelihood approaches were highly congruent. Six monophyletic groups were obtained. All the species were distinct except within the cultivated clade, where it was not possible to separate the two main cultivated species (D. cayenensis, D. rotundata) from their closest West African wild relatives (D. abyssinica, D. praehensilis, D. sagittifolia). Dioscorea baya formed a monophyletic group closely related to the cultivated clade. We therefore suggest it is included within the yam crop-wild relative complex. specialized crop-wild relatives Dioscorea herbarium genomics NGS West Africa whole chloroplast genome AFRIQUE DE L'OUEST 076 67 5 905-915 2018 0040-0262 https://www.documentation.ird.fr/hor/fdi:010074332 10.12705/675.4 0040-0262 [F B010074332] https://www.documentation.ird.fr/hor/fdi:010074332 https://www.documentation.ird.fr/intranet/publi/2018/11/010074332.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-12-06 2023-07-11 fdi:010074332 fre