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In forest nurseries, seedlings are obtained through vegetative methods, in order to faithfully transmit traits from the parent plants to the offspring. Grafting was used as vegetative propagation method for obtaining ornamental trees, decorating through beautiful colored specimens as well as by their boosting flowering and fructification, traits that might be put in good used by territorial planning. The current research aimed to study the production of Picea pungens var. argentea saplings using the side-veneer-grafting method. Grafting was performed on spruce rootstocks of two categories of age (two years and three years), and respectively for three categories of diameter (4 mm, 6 mm and 8 mm). It was noted that the successful grafting percentage varied depending on the diameter of the rootstock. Thus, it appeared that the best grip was recorded for the two years rootstocks of small size (M1-90%), followed by M2 and M3 with a grip percentage of 85%, while for the seedlings of three years, lower values were recorded: M1-83%, M2-80% respectively M3-72%.

Research on a Production by Vegetative Seedlings in the Nursery Picea Pungens Mihai Viteazu