Institute, Naoussa, Greece. The cuttings were collected from the base of annual shoots and used the same day.Abstract. The influence of some external factors [cultivar, indole-butyric acid (IBA) concentration, IBA dipping of shoot tip and base, preheating of cuttings, collecting date, time of cutting collection, mother tree age, cultivar, length of and diameter of cutting] on rooting of peach-nectarine hardwood shoots in the field were examined. It was found that the best IBA concentration for rooting differed among peach cultivars. Rooting of cuttings whose bases only were immersed in IBA solution was higher than those that had both base and tip immersed. In addition, a higher percentage of rooting shoots was achieved with preheating of cuttings before planting. The best length for cuttings varied between cultivars and the best diameter was 10-13 mm. Cuttings collected between 25 October and 13 November (1997 and 1998) showed the highest percentage of rooting shoots. There was also a higher percentage of rooting GF677 hardwood shoot cuttings collected from 7-year-old mother trees compared with those collected from 1-year-old mother trees.

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In this study, the adaptation of 49 quince (Cydonia oblonga)

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In Greece, GF677 (peach × almond hybrid) peach rootstock is widely used where replant diseases are a problem. In this study, the influence of orientation, rooting substrate, wounding, and jar environment on the rooting success of GF677 hardwood cuttings was examined. The best rooting was achieved by vertical positioning of the cuttings and the lowest by oblique and horizontal positions. The cutting lengths of 20 and 30 cm were better than 10 cm. Perlite was the best substrate for rooting, whereas cuttings in peat gave no rooting. "Doublesplit" wounding of cuttings increased the rooting percentage by over 29% compared with a nonwounded control. Rooting of wounded and nonwounded cuttings was achieved only in damp perlite (20% moisture) and loosely closed jars. No rooting or callusing was observed in cuttings held in the tightly closed jars.