THE OBTAINING OF PICEA CULTIVARS BY CUTTINGS

Abstract: The resinous species belonging to the Picea sort could be obtained both generative (by seeds) and vegetative (by cuttings and grafting) propagation method. This paper presents an experiment concerning the vegetative propagation, the cutting method, of a Picea cultivar. The experiment was made in the march this year in one of the USAMV greenhouses, being used as factors the substrate, the rooting promoter and the cutting type. The vegetative propagation method is made on purpose to transmit constantly the specific characters of the mother plant, and also to obtain faster and easier the propagation material. Concerning the vegetative propagation methods, the spruce can be obtained by grafting and cutting. Even the literature says that the spruce can naturally propagate by layering, this method is not used for obtaining the propagation material. The cutting method is used to the small cultivars or to the cultivars that are not producing the seeds, like our case. In other situations this propagation method is used to keep some plant features which cannot be transmitted by seeds. Occasionally on some species ’ twigs can appear mutations, a good example bein