Development of NIRS equations for food grain quality traits through exploitation of a core collection of cultivated sorghum

De Alencar Figueiredo Lucio Flavio, Davrieux Fabrice, Fliedel Geneviève, Rami Jean-François, Chantereau Jacques, Deu Monique, Courtois Brigitte, Mestres Christian. 2006. Development of NIRS equations for food grain quality traits through exploitation of a core collection of cultivated sorghum. Journal of Agricultural and Food Chemistry, 54 (22) : 8501-8509.

Résumé : A sorghum core collection representing a wide range of genetic diversity and used in the framework of a sorghum breeding and genetics program was evaluated by near-infrared reflectance spectroscopy (NIRS) to predict food grain quality traits: amylose content (AM), protein content (PR), lipid content (LI), endosperm texture (ET), and hardness (HD). A total of 278 sorghum samples were scanned as whole and ground grain to develop calibration equations. Laboratory analyses were performed on NIRS sample subsets that preserved the core collection racial distribution. Principal component analysis performed on NIRS spectra evidenced a level of structure following known sorghum races, which underlined the importance of using a wide range of genetic diversity. Performances of calibration equations were evaluated by the coefficient of determination, bias, standard error of laboratory (SEL), and ratio of performance deviation (RPD). Ground grain spectra gave better calibration equations than whole grain. PR equation (RPD of 5.7) can be used for quality control. ET, LI, and HD equations (RPD of 2.9, 2.6, and 2.6, respectively) can be used for screening steps. Even with a small SEL in whole sample analysis, a RPD of 1.8 for AM confirmed that this variable is not easy to predict with NIRS.

Classification Agris : F30 - Génétique et amélioration des plantes
Q04 - Composition des produits alimentaires
U30 - Méthodes de recherche

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

Auteurs et affiliations

• De Alencar Figueiredo Lucio Flavio, CIRAD-AMIS-UMR PIA (FRA)
• Davrieux Fabrice, CIRAD-CP-UPR Qualité produits pérennes (FRA)
• Fliedel Geneviève, CIRAD-FLHOR-UPR Qualité des aliments (FRA)
• Rami Jean-François, CIRAD-AMIS-UMR PIA (FRA) ORCID: 0000-0002-5679-3877
• Chantereau Jacques, CIRAD-CA-UPR Agrobiodiversité en savane (FRA)
• Deu Monique, CIRAD-AMIS-UMR PIA (FRA)
• Courtois Brigitte, CIRAD-AMIS-UMR PIA (FRA) ORCID: 0000-0003-2118-7102
• Mestres Christian, CIRAD-FLHOR-UPR Qualité des aliments (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/535305/)

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