Effect of Kerosene on Movement of 2,4-Dichlorophenoxyacetic Acid and some Derivatives Through Destarched Bean Plants in Darkness

Abstract
It was found that 2,4-D acid, its butyl ester, or its polypropylene butyl ether ester when applied in kerosene solution to 1 leaf of a destarched bean plant moved out of the leaf and into the stem, even when the plants were kept in darkness. Movement of the growth-regulator was shown by significant differences in stem curvature and inhibition of growth of tri-foliolate leaves in plants treated with the growth-regulator in kerosene as compared with those treated with kerosene only. Autoradiograms made from plants which had been treated with C14.tagged 2,4-D in kerosene demonstrated that the radioactive material definitely moves from the treated leaves of destarched plants through the petioles to the stems in darkness.