Abstract
The effects of batatasin III and its analogs on gibberellic acid (GA3)-dependent α-amylase induction in embryoless barley seeds and on cress root-growth were examined. Batatasin III was most effective and caused 68% inhibition of α-amylase induction at 4×10-4 M, but its potency was low compared with that of abscisic acid. In the cress test, p-hydroxybibenzyl had high activity.