The Effect of Gibberellic Acid Treatment on the Alpha-Amylase Development in Wheat Seeds Pre-heated at High Temperatures.

Gibberellin has a stimulatory effect on the germination and on the development of alpha-amylase (dextrinizing amylase) in cereal grains. The response of wheat seeds pre-heated at 100°C. (under dry) and at 60°C. (wet) to gibberellin was investigated. The stimulatory effect of gibberellin was altered by the heat treatment, and under certain conditions gibberellin did not serve as a stimulant at all. This suggested that the origin of alpha-amylase or factors affecting its formation promoted by gibberellin treatment might be different from those in natural germination, or the functions of exogenous and endogenous gibberellin on the development of alpha-amylase were not similar