Inverse Effects of Gibberellin on Peroxidase Activity and Growth in Dwarf Strains of Peas and Corn.

Abstract

Peroxidase activities of internodes of light grown peas and leaf sheaths of corn were determined by the use of pyrogallol and upon a protein N basis. In both the corn and peas the dwarf plants showed a higher peroxidase activity than the non-dwarf. Gibberellic acid (GA) at a dose of 1 [mu]g/plant produced an increase in growth and decrease in peroxidase activity in the dwarf peas and corn. GA was without effect in non-dwarf peas but in non-dwarf corn the growth was increased although the peroxidase activity was not significantly affected.