摘要：The paper shows results of research of different light intensity impact on stomata number (stomata density - SD) and stomata area (stomata pore surface -SPS). There were analysed two Paulownia species -Paulownia elongata and Paulownia fortune that grew under low and high light intensity. Basic testing hypothesis was related to characteristics of stomata between open and shaded treatment for each of analysed species, and to differences between stomata characteristics for each of species inside the treatment, as well. Due to results of t-test, average values of SD and SPS differed statistically significant for each of analysed species between various light treatments. Species differed statistically significant in average values of analysed stomata characteristics just in treatment with low light intensity. Based on three-way ANOVA results, all sources of phenotypic variability were statistically significant. Interaction between light treatment and species was statistically significant, as well, that shows different species response inside the treatment. Differences between species for analysed stomata characteristics depend on light intensity.
