Untersuchungen über Beziehungen zwischen Zellteilung und Morphogenese bei Gewebekulturen von Daucus carota III. Der Einfluss des Kinetins auf die Ultrastruktur der Zellen.

A previous paper reported a close correlation between cell division as influenced by kinetin and respiration, i.e. a high kinetin induced cell division rate corresponds with low oxygen consumption of the explants. This earlier observation was now confirmed. No significant differences between the ultrastructure of mitochondria of explants cultured with kinetin and those of explants cultured without kinetin could be observed, although the number of mitochondria per cell seems to be increased in explants cultured without kinetin. However, also the number of ribosomes in cells of explants cultured without kinetin seems to be increased as compared with those treated with kinetin. Kinetin apparently has no significant influence on the ultrastructure of cell organells under the conditions employed. [ABSTRACT FROM AUTHOR]