The antagonism of (2-Chlorethyl) trimethylammonium chloride and indole 3-acetic acid in epicotyl and axillary buds growth in the pea seedlings

The 0·03–0·06% indole-3-acetic acid (IAA) in lanoline paste smeared on the cut surface of decapitated epicotyl of the pea seedling inhibited the growth of the axillary buds of the cotyledons. 0·03–0·06% solution of (2-Chlorethyl) trimethylammonium chloride (CCC) considerably weakened the inhibitory effect of IAA when applied simultaneously to the roots. In a similar way CCC diminishes even the growth inhibition of intact pea epicotyls caused by 0·06% IAA lanoline paste. 0·03% solution of CCC administered to the roots of the decapitated pea seedlings significantly increased growth of the axillary buds. This effect may play a role in the demonstrated antagonism between the low concentration of CCC and IAA.