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  • Author or Editor: Vernon Hoysler x
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Abstract

Dipping the basal inch of cuttings in 2500 ppm succinic acid 2,2-dimethylhydiazide (SADH) solutions for 15 sec promoted rooting of carnation (Dianthus caryophyllus L.) and poinsettia (Euphorbia pulcherrima Wild). Materials such as (2-chlorethyl)trimethylammonium chloride (chlormequat), N-pyrrolidino-succinamic acid (SAPL), gibberellic acid (GA), abscisic acid (ABA), 2-chloroethylphosphonic acid (ethephon) and ethylhydrogen 1-propylphosphonate (EHPP) either decreased or had little effect on rooting.

Open Access

Abstract

Herbaceous cuttings dipped momentarily in solutions of several concentrations of B-Nine produced significantly greater weight and numbers of adventitious roots than did untreated cuttings. Concentrations of 1000 ppm and 5000 ppm were effective, with 2500 ppm optimum. Conversely, similar treatments of Cycocel caused a marked depression of adventitious root production. As rate of Cycocel was increased, production of adventitious roots diminished, suggesting corroboration of research proposing Cycocel’s behavior as being that of an “anti-auxin”.

Open Access