KAŠPAR M.: Analysis of xylogenis and floemogenesis of Norway Spruce (Picea abies (L.) Karst.) during two growing seasons. The thesis deals is focused on finding and evaluating the creation of wood and phloem of Norway spruce during the vegetation period 2015 and 2016 at the reasearch area Rájec-Němčice. Six representative trees were selected on the surface and samples were taken periodically. Permanent microscopic slides were prepared and examined for the samples obtained. The activity of cambium, the different phases of differentiation of wood and bast elements and the rate of growth using Gompertz function were evaluated. The data collected for each year were compared with each other and compared with the results of other authors. Growth variations were noted within two growing seasons. Statistically significant differences were seen in the number of kambia cells, whether in dormancy or during the active period. There were statistically significant differences at the time of termination of the individual cell phases. The different values of the years also resulted from the results of the Gompertz function. Generally speaking, in 2016 the growth dynamics was more intense and the number of cells generated was higher than in the previous year.