Aspen Bibliography

Effects of gibberellic acid and an inhibitor of gibberellin action on suckering from Aspen root cuttings

Document Type

Article

Journal/Book Title/Conference

Canadian Journal of Forest Research

Volume

3

Issue

1

First Page

39

Last Page

44

Publication Date

1973

Abstract

The effect of gibberellic acid (GA3) on suckering from trembling aspen (Populustremuloides Michx.) roots was determined by treating two kinds of root cuttings, one that produced suckers from primordia newly initiated or in an early stage of development (EP roots) and another that produced suckers primarily from relatively large, visible primordia (LP roots). Also investigated was the effect of an inhibitor of gibberellin action, a substituted pyrimidine, on outgrowth of suckers from LP roots. All concentrations (25–400 mg/l) of GA3 stimulated shoot outgrowth from LP roots. In contrast, GA3 inhibited shoot development in EP roots. The role of endogenous gibberellin in sucker outgrowth was indicated by the inhibition of shoot elongation by the inhibitor of gibberellin action.

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