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Morphological and molecular characterization of yacon materials (Smallanthus sonchifolius Poep. & Endl) H. Robinson collected in the Eje Cafetero de Colombia (Colombian Coffee zone) ecoregion
Yacon (Smallanthus sonchifolius Poep. Z & Endl) H. Robinson is an Asteraceae native to the Andean region. It is a plant used by antiquated cultures as a refreshing fruit or low calorie food. Its roots are composed mostly of water (85-90%). 40 to 70% of its dry weight comes in the form of fructooligosaccharides (FOS), sugars with favorable effects on human health, and with a high antioxidant power, which is why it is considered medicinal; for the treatment of problems associated with diabetes. The high demand and price of the product in the domestic and international markets make this species a profitable option for farmers in the Eje Cafetero (Colombian Coffee) ecoregion, which has ideal agro-ecological conditions for its cultivation. However, there is neither precise information on the materials present in the region nor information on its productivity, making it difficult to propose the appropiate agronomic management to optimize its production. This research was conducted in five provinces of the Eje Cafetero ecoregion, collecting and morphologically characterizing the species. Subsequent morphoagronomic evaluations were performed using 18 quantitative descriptors, and eight qualitative ones, in addition to the molecular characterization with the RAMs technique using six initiators. The morphoagronomic characterization classified the ten collected biotypes into three groups. Molecular characterization distinguished four groups, which are closely related to the grouping according to the qualitative characteristics found. The paper concludes that the accessions of group one are the most appropriate for the production of tubers, those of group two for dual-purpose production and those of group three, for leaf production. The multiple correspondence analysis (MCA) indicates that within the germplasm there are important characters that can be used towards the selection of potential parents with desirable quality traits for breeders, farmers and consumers.
When RIAA receives the postulation of an original by its author, either through email or post mail, considers that it can be published in physical and/or electronic format and facilitates its inclusion in databases, newspaper archives and other systems and indexing process. RIAA authorizes the reproduction and citation of the Journal’s material, provided that explicitly indicates journal name, the authors, the article title, volume, number and pages. The ideas and concepts expressed in the articles are responsibility of the authors and in no case reflect the institutional policies of the UNAD.
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