Vol. 50

Title:
Root Formation in Relationship to Auxin Uptake in Cuttings Treated by the Dilute Soak, Quick Dip, and Talc Methods

Author:
R.L. Geneve

pp: 409-412

Abstract:
INTRODUCTION

Although many factors can influence the success of adventitious root formation in stem cuttings, auxin remains as a consistent treatment for increasing rooting. The initial observations that auxin promotes root formation date to the 1930s. Since that time, three systems have gained acceptance for delivery of auxin to cuttings. These are talc, quick dip, and dilute soak methods (Blazich, 1988). Quick dip exposes cuttings to auxin in a solvent solution for 1 to 5 sec, while the dilute soak is an aqueous auxin solution with application times up to 48 h. Auxin delivery in talc was developed in the 1930s as an alternative to quick dips and lanolin paste (Loach, 1988). It has generally been suggested that quick dip applications are more effective in promoting root formation than either dilute soak or talc (Bonaminio, 1983). One reason may be the difference in uptake mechanics for these different methods. In general, it appears that auxin in talc or aqueous solutions are

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