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Propagation of pistachio by cuttings.
Cuttings of pistachio (P. vera L.) were taken on five dates, June 8, August 4, and November 20, 1973, and January 20 and March 20, 1974. After treatment with NAA, IBA, cytokinin, and ethephon the cuttings were placed either in the greenhouse or lathhouse and root development was studied. The rooting percentage of pistachio cuttings was zero in all experiments. However, in one experiment, cuttings which were treated with ethephon at concentration of 100 ppm, 500 ppm, and 1000 ppm produced callus tissue under mist propagation, but failed to initiate any roots.