Influence of industrial SO2 and NO2 emissions on histological parameters of Robinia pseudoacacia L. Self-sown plants and underground
T. Jusipiva, O. Podolkina
Oles Gonchar National University of Dnipropetrovsk
72, Gagarin Ave., Dnipropetrovsk 49010, Ukraine
FR2008@ukr.net
The influence of industrial SO2 and NO2 emissions on histological parameters of Robinia pseudoacacia L. self-sown plant stem and one-year undergrowth stem under conditions of steppe Prydniprovya was studied. It was ascertained, that when affected by toxic gases, self-sown Robinia pseudoacacia plants have thicker cork, collenchyma, cortex and soft bast, though these parameters of undergrowth do not differ much from check characteristics. Xylem radius reduces in stems of virginal plants of all instars. Such undergrowth stem parameters as cork parenchyma depth, core diameter and central stem cylinder diameter also go down.
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Keywords: self-sown plant, undergrowth, histological parameters, toxic gases SO2 and NO2
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