Changes in Mitotic Indices in Roots of Secale Exposed to Dimethyl Sulfoxide (DMSO)

Abstract

Rye root tips were exposed to different concentrations of DMSO. Mitotic indices were determined for the various treatments. As the concentration of DMSO increased from 1% to 11%, the mitotic index decreased from 20.6 to 0.6. The dosage response curve for 50% inhibition was near 3% DMSO.