Abstract

RIVERA-JIMENEZ, Hernando; ALVAREZ, Andrés; PALACIO-MEJIA, Juan  and  OCHOA, Alba. MOLECULAR CHARACTERIZATION OF YAM (Dioscorea alata L.) ACCESSIONS FROM THE COLOMBIAN CARIBBEAN REGION. rev.udcaactual.divulg.cient. [online]. 2012, vol.15, n.2, pp.323-330. ISSN 0123-4226.

Yam (Dioscorea Spp) is an essential part of the diet of the Colombian North Coast, where it is cultivated, even becoming part of their cultural identity. As a strategy to enhance the conservation, use and knowledge of its agrobiodiversity, the University of Cordoba has established a germplasm collection of yam, which stores 14 accessions of the species Disocorea alata, the most representative of the collection. The goal of this study was to evaluate the genetic variability of the collection and its relationship to the morphological characterization previously performed, using AFLP molecular markers. The data were analyzed by clustering methods of multiple correspondence analysis and Dice similarity, establishing levels of reliability of genetic groups by resampling. The genetic variability of the 14 yam accessions was high, allowing to-differentiate four groups and two subgroups through a pattern of well-defined organizational structure with a combination of molecular data, botanical and morphological characteristics.

Keywords : Yam; germplasm; genetic variability; plant genetic resources; AFLP.

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