por su formación, instalaciones, equipos y talento humano.A los directores del presente trabajo de grado, profesor Carlos Ñústez y la profesora Liz Patricia Moreno, por la confianza que me brindaron y cada uno de los aportes dados por años en mi formación.A cada uno de los docentes de la Facultad de Ciencias Agrarias Sede Bogotá, especialmente: los profesores; Aníbal Herrera, Enrique Darghan y Luis Ernesto Rodríguez, quienes se esforzaron y brindaron particular apoyo durante mi formación académica. A los jurados;profesor Helber Balaguera y el ingeniero Julio Acevedo, por la revisión del documento y sus recomendaciones que resultaron de gran utilidad.Al invaluable apoyo de mi papá Alfonso Lizarazo, a Mariam Vásquez,
Summary
Colombia has a biodiversity centre of diploid potatoes located at south of the country. This study evaluated the amounts of potassium (K), calcium (Ca), iron (Fe) and zinc (Zn) in a biodiversity panel of potato tubers, constituting native cultivars, accessions of the Working Collection of Potato Breeding Program at the Universidad Nacional de Colombia (CCC) and commercial cultivars. The highest quantity of minerals found were as follows: 34 333 ± 4509 mg K kg−1 potato dry weight (DW; CCC112), 1965 ± 898 mg Ca kg−1 potato DW (CCC23), 87.5 ± 8.8 mg Fe kg−1 potato DW (CCC116) and 60.7 ± 5.1 mg Zn kg−1 potato DW (CCC31). As compared to those in commercial cultivars, the currently evaluated tubers had an increase of 1.4, 12.5, 3.5 and 3.6‐fold in K, Ca, Fe and Zn. These genotypes can be used in the future breeding programmes to enhance specific mineral contents in tubers.
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