Abstract

BERNAL, Ángela María et al. Detection of possible duplicates in Colombian Central Collection of potato Solanum tuberosum subspecies andigena using morphological characters. Agron. colomb. [online]. 2006, vol.24, n.2, pp.226-237. ISSN 0120-9965.

Presence of duplicated material in a germplasm core collection can threat its genetic identity, hide its real variability and increase the cost of management and maintenance. Because of this reason, with the aim of identifying candidate materials for duplicates in Colombian Center Collection of potato Solanum tuberosum ssp. andigena, the morphologic characterization with qualitative variables was carried out. The investigation was made during the first and second semester of 2004, in Corpoica CI Tibaitatá (Mosquera, Cundinamarca). The multiple correspondence analysis (ACM) permited to identify characters of primary and secondary tuber skin color, secondary tuber meat color, and primary and secondary flower color, as the ones that better discriminated the collection and, by means of the cluster analysis, a dendrogram was obtained, which defined seven groups and four subgroups, from which the possible duplicates under an arbitrary level index were identified that admitted statistic rigor and biologic amplitude. Totally were recognized 64 materials for a later molecular confirmation.

Keywords : genetic recourses; germplasm; conglomerates.

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