Initiation of Mitosis and Cell Division by Kinetin and Indoleacetic Acid in Excised Tobacco Pith Tissue

Kinetin Induces Chromosomal Abnormalities in African Blue Lily (Agapanthus praecox ssp. minimus) Grown in In Vitro

“…Nevertheless, specific involvement of cytokinins in other aspects of cell cycle is yet to be uncovered (D'Agostino & Kiebe 1999). Kinetin especially was proposed to exert stimulatory effect on seed germination and affect mitotic activity (Das et al 1956;Haber & Luippold 1960;Reynolds & Thompson 1973), parallel to our findings in the current investigation. Soh and Yang (1993) showed that low concentrations of cytokinins, specifically kinetin and BAP increased mitosis activity and caused mitotic aberrations in Allium cepa.…”

Structural Physiological, and Biochemical Gradients in Tobacco Pith Tissue

“…Thus, when explants are removed for tisstue cultture, no lparticularl precautions are stipulated re-garding the regioil in the plant froml which the tissue is taken. The variability noted in the results of some bioaassav-s based on Ipith has usually been .attributed to variations in technical p)rocedtures an(l occasionally to polyploidv aand asynchronous cultuires (2,18). However, such explanations cannot be tiniversallr applied.…”

Progressive Change in Organ-Forming Capacity of Tobacco Callus During Single Subculture Period

“…The occurrence of polyploidy and other aneuploid conditions in plant tissue cultured in vitro has been reported by many workers (Demoise et al 1969;Torrey 1967;Blakely et al 1964;Cooper et al 1964;Fox 1963;Partanen 1963;Mitra et al 1960Mitra et al , 1961Das et al 1956;Partanen et al 1955;Naylor et al 1954). Some of these studies also correlated chromosomal changes with organ-forming capacity (Partanen et al 1955;Fox 1963;Torrey 1967).…”