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Research article - Peer-reviewed, 2008

Three-way data analysis of a wheat growing experiment using near infrared spectral data

Geladi, Paul; Manley, Marena


An agricultural growing experiment cultivating 10 cultivars at five localities produced whole wheat flour samples that were analysed by Fourier transform near infrared (FT-NIR) spectroscopy. This produced a three-way data array: locality x cultivar x wavelength. By taking smoothing first derivatives and removing a noisy part of the spectra meaningful PARAFAC (PARAllel FACtor analysis) models could be produced. Two factors could be interpreted spectroscopically, showing that cultivar properties are related in a not so trivial way to average wheat hardness values and that locality variations are straightforwardly related to average protein content. Copyright 0 2008 John Wiley & Sons, Ltd.


Parallel Factor Analysis; three-way array; ANOVA layout; near infrared spectra; wheat cultivars; localities; wheat hardness; protein content

Published in

Journal of Chemometrics
2008, Volume: 22, number: 3-4, pages: 247-251