The effect of toxic elements on the microanatomy of the leaves of the <i>Salix alba</i> L.

The effects of a heavy metal containing wastewater sediment on two cultivars white willow were investigated in pot experiment. Our aim was to examine the effect toxic elements microanatomical parameters leaves tested plant. We examined following parameters: stomatic density, stoma width and length, lamina thickness, adaxial abaxial epidermis mesophyll palisad spongy parenchyma main vein length. experiment had results: with presence elements, thickness increased, within this, there significant growth parenchyma. length decreased, so did extent xylem cavities. collenchymal stock leaf venation increased. number stomas but size decreased. As result element contamination, Ca-oxalate crystals increased mesophyll.