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Use of Near-Infrared Reflectance Spectroscopy for Selecting for High Stearic Acid Concentration in Single Husked Achenes of Sunflower

Instituto de Agricultura Sostenible, Apartado 4084, E-14080 Córdoba, Spain

View larger version (35K): [in a new window]   Fig. 1. Histograms of palmitic, stearic, oleic, and linoleic acid concentration (g kg–1) in a calibration set of 2510 sunflower seeds (husked achenes).

View larger version (23K): [in a new window]   Fig. 2. Scatter plots of NIRS estimation of concentrations of individual fatty acids vs. GLC values in a set of 503 intact sunflower seeds (husked achenes).

View larger version (35K): [in a new window]   Fig. 3. Histograms of GLC values for stearic acid concentration in single sunflower seeds previously analyzed for stearic acid by NIRS in a non-destructive way. GLC analyses were conducted to monitor the performance of selection for high stearic concentration on the basis of NIRS information, with a selection cut-off of 260 g kg–1.