The regenerative potential in the root explants of in vivo grown Cattleya ’Almakee’ plants largely depend on the location of isolated explants from the main root and on the level&type of the growth regulators.Regeneration is affected by polarity all along the root axis of root.The regeneration is of basipetal gradient.The proximal explants responded to the presence of cytokinins(BAP/KN)in Mitra...

Recent studies have revealed important new details of how cytokinin-dependent mechanisms control plant growth. Intriguingly, cytokinins are involved in both maintaining meristems and promoting differentiation.

A promising carrier for the development of polymer systems with controlled release biologically active compounds is aminopolysaccharide chitosan. In present work, we studied possibility using chitosan films as a matrix N6-benzyladenine (BA), which natural cytokinin widely used in tissue culture. The aim this work was to develop biopolymer carriers containing phytohormones cytokinins that provid...

It is known that removal of the endosperm (deseeding) reduces subsequent auxin production in the oat coleoptile tip and the "regeneration of the physiological tip" (auxin production) in the decapitated coleoptile as determined by the quantities of auxin which are secreted into agar blocks and assayed by the Avena curvature test (10). This decrease in auxin production is associated with parallel...

Cytokinins are a structurally diverse group of N 6 -substituted purine derivatives capable of inducing plant cell division. The discovery of cytokinins by Folke Skoog and colleagues in the 1950s initially focused on kinetin, a synthetic compound derived from autoclaved salmon sperm DNA (Miller et al., 1955). Miller, Skoog, and others subsequently found that cytokinins are naturally occurring pl...

BACKGROUND AND AIMS The typical rootless linear shoots of aquatic carnivorous plants exhibit clear, steep polarity associated with very rapid apical shoot growth. The aim of this study was to determine how auxin and cytokinin contents are related to polarity and shoot growth in such plants. METHODS The main auxin and cytokinin metabolites in separated shoot segments and turions of two carnivo...