Fine structure of Wolffia arrhiza

摘要: Light and electron microscopic studies of Wolffia arrhiza L. frond development during vegetative reproduction showed that the fronds were composed entirely chlorenchymous cells. Chloroplasts in epidermal cells other than guard unique they contained no starch. Cell division occurred only at proximal end daughter early their development. Meristematic chloroplasts with clearly defined grana. Proplastids, commonly observed meristematic apical regions plants, absent these plants.