Promeristem

Promeristem

 

the least differentiated primary formative tissue of plants.

References in periodicals archive ?
After the establishment of the primary form, the tissue of the blastozone -the promeristem (Sussex & Steeves, 1967, Esau, 1977:272, Saehs, 1991:131)--enters a phase of accelerated growth with the effect of declining cell dimensions in the so-called transition zone Popham, 1951, Esau, 1965:96, Stevenson, 1976).
Based on an analysis of the strong differences among shoot apical layers in cellular staining properties, ultrastructure, and cytochemistry, the authors interpret the apical cell and the surface layer of prismatic cells to be a single-layered promeristem (strictly defined as the only self-perpetuating layer of undifferentiated meristematic cells in the apex).
Shoot organization in the Filicales: The promeristem.