Influence of Growth Regulating Substances on Absorption and Translocation of Calcium in Pea and Bean1

Abstract

Abstract The influence of some growth hormones and regulators on the pattern of 45 Ca absorption and translocation was determined on young pea and bean plants. GA 3 (20 ppm) and TIBA (30 ppm) depressed 45 Ca absorption in both species. IAA (20 ppm) and SADH (1500 ppm) increased 45 Ca translocation to bean shoots, but depressed translocation to pea shoots. None of the substances materially altered retention of 45 Ca in the roots of either species. When differences in translocation to the shoots were observed, they were not correlated with growth responses evoked by the growth regulators.