Abstract

Micropropagation of the actinorhizal plant Comptonia peregrina of the Myricaceae was achieved successfully by the induction of root buds in excised root culture with cytokinin (1.0 μM benzyladenine). Excised root segments with initiated root buds were subcultured in Woody Plant Medium (WPM) lacking growth regulators, developing extensive callus which subsequently gave rise to multiple adventitious buds. Shoot elongation was facilitated by transfer of calluses to more aerated conditions. Root initiation was induced on shoots by brief treatment with auxin (<1 μM indolebutyric acid) and transfer to WPM for plantlet development. Controlled light and aeration in liquid medium were critical conditions for successful micropropagation.

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