VARIABILITY OF MORPHO-ANATOMICAL CHARACTERISTICS OF BALD CYPRESS NEEDLES FROM TOPCIDER PARK (BELGRADE)

There have been analyzed morho-anatomical characteristics of bald cypress needles from Topcider Park (Belgrade). In order to perform the research, it was chosen 5 test stems and from all of them, 20 needles from branches and 20 needles from the trunk were taken. By descriptive statistic methods, one-factor variance analysis method (ANOVA) and LSD-test, 7 observed elements have been analyzed (needle length, needle width, needle thickness, central cylinder width, central cylinder thickness, mesophyll width and mesophyll thickness). As for anatomical structure of needles, it was related to tissue defining and differentation grade of parenchyma cells as tissues constructive elements. From anatomical point of view, the greatest difference between needles from the branches and from the trunk is related to their maturation grade. All in all, there were established some differences between these two needle types not only from morphological, but also from anatomical point of view.