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Fe K-edge XANES spectra of grain samples from A. kotschyi acc. 3790, T. aestivum L. IITR26, T. aestivum Cv. WH291, and T. aestivum Cv. WL711 and reference Fe compounds with octahedral coordination and valence states Fe2+ and Fe3+: Fe(II) glutathione (GSH), Fe(II) sulphate, Fe(II) oxalate, Fe(II) phytate, Fe(III) citrate, Fe(III) sulphate, Fe(III) phosphate, and Fe(III) phytate) (this figure is available in colour at JXB online).
