Improving Rooting of Carnation and Poinsettia Cuttings with Succinic Acid-2,2-Dimethylhydrazide1

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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.

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