Influence of cold storage period and auxin treatment on the subsequent rooting of carnation cuttings

• Published in: Scientia horticulturae Vol. 65; no. 1; pp. 73 - 84
• Main Authors: Garrido, G., Cano, E.A., Amao, M.B., Acosta, M., Sánchez-Bravo, J.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.1996; Elsevier
• Subjects: Agronomy. Soil science and plant productions; Auxins; Biological and medical sciences; Carnation cuttings; Cold storage; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Rooting; Vegetative propagation. Micropropagation; Vegetative propagation. Sowing and planting. Harvesting; IAA; Auxins; IBA; Rooting; Cold storage; ORP; Carnation cuttings; NAA; Vegetative propagation; Auxin; 1-Naphthaleneacetic acid; Growth regulator treatment; Dianthus caryophyllus; Caryophyllaceae; Refrigerated storage; Cutting(agronomy); Dicotyledones; Angiospermae; Flower crop; Plant growth substance; Spermatophyta; Intraspecific comparison; Cultivar
• ISSN: 0304-4238; 1879-1018
• DOI: 10.1016/0304-4238(95)00860-8

The influence of the duration of cold storage and a subsequent auxin treatment on the rooting of cuttings from three carnation cultivars (‘Oriana’, ‘Elsy’ and ‘Virginie’) was studied. When cuttings were stored for short periods (2 weeks), auxin (indole-3-butyric acid plus naphthale-neacetic acid) treatment stimulated the rooting in ‘Oriana’ and ‘Elsy’ but produced no effect in ‘Virginie’. However, no significant auxin effect was observed in any variety when cuttings were stored for long periods (12 weeks). Increasing the storage period from 2 to 10 weeks (in ‘Oriana’) or to 8 weeks (in ‘Elsy’) was as effective as the auxin treatment in stimulating the rooting. The onset of rooting in untreated ‘Virginie’ cuttings was delayed as the storage period increased from 2 to 8 weeks. The stimulation of the rooting by auxin treatment or storage in ‘Oriana’ and ‘Elsy’ meant a reduction of about 4 days in the time required to reach optimal rooting. Neither the percentage of rooting nor the quality of rooted plants was modified at the end of the rooting period, irrespective of auxin treatment or storage. Changes in the endogenous auxin levels and auxin sensitivity during storage might account for the results obtained.