Protein mobilization of germinating seeds of Vicia faba L. cv. Eresen 87 was studied by SDS-PAGE. The protein mobilization started after the 3rd day in normal seeds and continued more slowly in detached cotyledons. Plant growth regulators were not affected the protein mobilization in detached cotyledons. The dry weight of the embryonic axis increased, whereas it decreased in cotyledons during the germination. © 2007 Asian Network for Scientific Information.