Evaluation of parameters affecting the rooting of hardwood cuttings in Ceratoni...

• Author(s): Cabrita, R. ; Graça, J. ; Schwab, L. ; Martins-Loução, M. A.
• Date: 1987
• Persistent ID: http://hdl.handle.net/10451/4348
• Origin: Repositório da Universidade de Lisboa
• Subject(s): Carob; Ceratonia siliqua; Hardwood cuttings; Propagation
• Document Type: Conference Object
• Language: English

Description

Comunicação apresentada no II Simposium Internacional sobre La Garrafa, de 29 de Setembro a 1 de Outubro de 1987 em Valência. Vegetative propagation by rooted cuttings will be a useful tool in reflorestation only when rooting problems are overcome. Intensive studies on promoter factors of rool induction will be necessary. This paper represents a systematic study of different parameters affecting the rooting of carob shoot cuttings. Seasonal effects, hormonal treatment efficiency and cultivars were examined. Hardwood cuttings of carob were excised both on March and April. An acclimatization period under freeze conditions followed by an hormone treatment of 4000 and 8000 mg/1 indole butiric acid was tested. After this treatment cuttings were inserted in a rooting bench with expanded clay as substrate and maintaining inside the greenhouse for a two month period. Splitting the lower segment of the cutting, prior to placing them on the clay have no significant results on rooting. On cuttings harvested on March, the response seems to be conditioned principally by the hormonal concentration, in spite of those from April where cultivar seems to have the most influence on rooting ability. Rooted plantlets present a high mortality after transplnatation to a soil mixture under greenhouse conditions.