title: Prediction of carotenoids, cyanide and dry matter contents in fresh cassava root using NIRS and Hunter color techniques.
abstract: Efforts are currently underway to improve carotenoids content in cassava roots through conventional breeding as a strategy to reduce vitamin A deficiency. However, only few samples can be quantified each day for total carotenoids (TCC) and β-carotene (TBC) contents, limiting the gains from breeding. A database with >3000 samples was used to evaluate the potential of NIRS and chromameter devices to predict root quality traits. Maximum TTC and TBC were up to 25.5 and 16.6 μg/g (fresh weight basis), respectively. NIRS predictions were highly satisfactory for dry matter content (DMC, R(2): 0.96), TCC (R(2): 0.92) and TBC (R(2): 0.93). NIRS could also distinguish roots with high or low cyanogenic potential (R(2): 0.86). Hunter color parameters could also be used for predictions, but with lower accuracy than NIRS. NIRS or chromameter improve selection protocols, allowing faster gains from breeding. Results also demonstrate that TBC and DMC can be improved simultaneously (required for the adoption of biofortified cassava).
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia.
authors.forename: T
authors.initials: T
authors.lastname: Sánchez
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia. Electronic address: h.ceballos@cgiar.org.
authors.forename: H
authors.initials: H
authors.lastname: Ceballos
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR Qualisud, Cali, Colombia.
authors.forename: D
authors.initials: D
authors.lastname: Dufour
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia.
authors.forename: D
authors.initials: D
authors.lastname: Ortiz
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia.
authors.forename: N
authors.initials: N
authors.lastname: Morante
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia.
authors.forename: F
authors.initials: F
authors.lastname: Calle
authors.affiliation: Centro Internacional de la Papa (CIP), La Molina, Peru.
authors.forename: T
authors.initials: T
authors.lastname: Zum Felde
authors.affiliation: Centro Internacional de Agricultura Tropical (CIAT), Apartado Aéreo 6713, Cali, Colombia.
authors.forename: M
authors.initials: M
authors.lastname: Domínguez
authors.affiliation: Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR Qualisud, St. Pierre, Reunion Island, France.
authors.forename: F
authors.initials: F
authors.lastname: Davrieux
mesh_terms: D002338:Carotenoids / Q000737:chemistry*; D003486:Cyanides / Q000737:chemistry*; D002365:Manihot / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D019207:beta Carotene
chemical_list: D003486:Cyanides; D019207:beta Carotene; D002338:Carotenoids
keywords: Biofortification; Colour intensity; Nutritional quality; Pigments; Prediction