Abstract

ABSTRACT Leaf primordia of branchlet apices of the halophyte Tamarix aphylla have been found to bear external salt glands at different developmental stages. Further light and electron microscopic observations revealed that all these stages from initiation of salt glands up to their final differentiation also occur in fully-expanded mature leaves. In T. aphylla, unlike the species of other families, external leaf glands are not permanent on leaves, but by the time some glands mature and disintegrate, some others initiate and develop. The biological significance of this situation is discussed.

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