Abstract

Changes of both insoluble carbohydrates and RNA are described in the root apical meristem of Ceratopteris thalictroides(L.) Brongn. The apical cell exhibits more carbohydrate granules than its neighboring cells in the actively growing root. There are no marked differences in RNA content between the apical cell and itsderivatives in both young and old roots. The division tole as well as theirphysiological roles of the apical cell,based upon the high amount of insoluble carbohydrates in the growing toor, compared th the low amount in old root,were discrssed.