Agritrop
Home

Phenotypic characterization of sweet potato Ipomoea batatas (L.) Lam. genotypes in relation to prediction of chemical quality constituents by NIRS equations

Lebot Vincent, Ndiaye André, Malapa Roger. 2011. Phenotypic characterization of sweet potato Ipomoea batatas (L.) Lam. genotypes in relation to prediction of chemical quality constituents by NIRS equations. Plant Breeding, 130 (2) : pp. 457-463.

Journal article ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
document_560005.pdf

Télécharger (557kB)

Quartile : Q2, Sujet : AGRONOMY / Quartile : Q2, Sujet : PLANT SCIENCES / Quartile : Q3, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Abstract : This study evaluates the potential of NIRS (near-infrared reflectance spectroscopy) to predict the major constituents (starch, sugars, cellulose, proteins and minerals) of the sweet potato root. Overall, 240 accessions were morphologically described, chemically analysed and their NIR spectra recorded. No correlations were observed between aerial and underground traits, and between morphological traits and major constituents. Calibration equations, developed on 190 accessions, showed high explained variances in cross-validation (r2cv) for starch (0.82), sugars (0.91), proteins (0.89) and minerals (0.74) but no response for cellulose (0.21). The predictions were tested on an independent set of 50 randomly selected accessions. The r2pred values for starch, sugars and proteins were, respectively, of 0.71, 0.82 and 0.87 with ratios of performance to deviation (RPD) of 2.11, 2.29 and 2.93. New calibration equations developed on 240 accessions showed improved RPD values for starch (2.65), sugars (2.75), cellulose (1.58), proteins (3.47) and minerals (2.34), indicating that larger sets could improve prediction. NIRS could be used in sweet potato breeding programmes to predict starch, sugars and proteins contents in the roots. (Résumé d'auteur)

Mots-clés Agrovoc : Ipomoea batatas, Igname, Qualité, Composition chimique, Génotype, technique de prévision, Spectroscopie infrarouge, Teneur en glucides, Teneur en éléments minéraux, Teneur en protéines, Amidon, Cellulose, Partie souterraine, Partie aérienne, Légume racine, Phénotype, Morphologie végétale

Mots-clés géographiques Agrovoc : Vanuatu

Classification Agris : F30 - Plant genetics and breeding
Q04 - Food composition
U30 - Research methods
F60 - Plant physiology and biochemistry
F50 - Plant structure

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

  • Lebot Vincent, CIRAD-BIOS-UMR AGAP (VUT)
  • Ndiaye André, Université de Bordeaux I (FRA)
  • Malapa Roger, VARTC (VUT)

Autres liens de la publication

Source : Cirad - Agritrop (https://agritrop.cirad.fr/560005/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2021-06-24 ]