Breaking Bud Dormancy in Tea Crabapple [Malus hupehensis (Pamp.) Rehd.] with Cytokinins1
Open Access
- 1 January 1976
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 101 (1) , 28-30
- https://doi.org/10.21273/jashs.101.1.28
Abstract
A technique is described for forcing the buds of tea crabapple using cytokinins. Of the cytokinins tested, 6-benzylamino purine (BA) produced the best results at 2,000 ppm, 6-(benzylamino)-9-(2-tetrahydropyranyl)-9H-purine (PBA) was nearly as effective, and N6-[Δ2-isopentenyl]-adenosine (IPA) and N6-[Δ2 isopentenyl]-adenine (2ip) were ineffective. Depending on the cytokinin used, inclusion of 0.5 or 1.0% surfactant was required to insure consistent results. No differences were found among 8 surfactants tested. Dimethylsulfoxide (DMSO) was an excellent solvent for the cytokinins and slightly enhanced their effect. The treatment effect was not translocated from the site of application. This method was consistent, faster than 10 weeks of cold treatment, less phytotoxic than cytokinins applied in a lanolin fraction, and permitted rapid spray application of small quantities of solution.Keywords
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