Activity of gibberellin A₁₇ in 13 bioassay systems

Abstract

The activity of gibberellin A 17 (GA 17 ) was relatively low in the bioassay systems in which it was tested. The dock leaf senescence assay was the most sensitive of those used, followed by the oat mesocotyl, dwarf rice, and barley half-seed assays. In the cucumber hypocotyl, lettuce hypocotyl, excised pea epicotyl, oat leaf, and d-1 maize mutants, the activity of GA 17 was only marginal. In the intact dwarf pea, d-2, d-3, and d-5 maize mutant assays no activity was recorded.