Anatomical features of bald cypress - exotic for meliorative afforestation

Dusan Jokanovic,Katarina Lazarevic,Radoslav Lozjanin,Aleksandar Andjelkovic,Nikolic Jokanovic

doi:10.2298/gsf1919061j

Dusan Jokanovic, Katarina Lazarevic + Show 3 more

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https://doi.org/10.2298/gsf1919061j

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Abstract

The paper deals with height and density of woody rays per mm2 by bald cypress stems at two alluvial sites in Serbia (Veliko ratno ostrvo and Backa Palanka). Overall 6 stems (3 at one and 3 at another locality) were harvested. After that discs were made and they served for permanent anatomical preparations making. All necessary measurements were performed on these preparations. Inside each growth ring was selected 6 visible fields (3 at early- and 3 at latewood zone) and within all fields density of woody rays per mm2 was calculated. According to simple equation number of woody rays per mm2 was determined. As for height of woody rays, it was calculated by parenchyma cells counting. Researched bald cypress features were measured depending on 3 factors: cambial age, stem height and zone inside growth ring. As for relation between number and height of woody rays, there is obvious inverse - greater density of woody rays means they are shorter. The scope of the paper was to establish how height and number of woody rays per mm2 change depending on 3 observed factors - age, stem height and zone inside growth rings.

Highlights

Bald cypress is a deciduous conifer that belongs to Taxodiaceae F
Based on conducted research, it can be deduced going from the base to the breast height that woody rays height gradually rises independing on zone inside growth rings and locality
As for relation between number of woody rays and stem height, we can observe decreasing tendency in earlywood, unlike in latewood where occurs increasing of woody rays density going from the base to the breast height independing on researched locality

Summary

Introduction

Bald cypress is a deciduous conifer that belongs to Taxodiaceae F. W. Neger family (Vu ki ćević, 1987). It was introduced in Europe in the middle of 17th century and was used at first like ornamental species and for forest plantations establishing, as well (V i d akovi ć, 1982). At the area of central and western Europe bald cypress was not desirable forest species for two reasons – unsuitable climate conditions and selection of not good enough sites for planting. A greater number of bald cypress stems was recorded in populations situated on Veliko ratno ostrvo and Bačka Palanka. As for Bačka Palanka, there is the only seed stand of bald cypress in Serbia. Individuals of bald cypress are present in the area of Novi Sad, Vršac, Kraljevo, Vrnjačka banja and Topčider Park in Belgrade

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