ONTOGENY OF STOMATA IN SOME CRUCIFERAE

摘要

The ontogeny of stomata was investigated in 12 species of Cruciferae. The three subsidiary cells as well as the guard cells originate from the same protodermal cell and thus the ontogeny conforms to the syndetocheilic type. The mature stomata are anisocytic. Sometimes, the subsidiary cells undergo a transverse and (or) vertical division and the mature stoma shows four to five subsidiary cells.