Dry Matter and Leaf Structure in Young Wheat Plants as Affected by Cadmium, Lead, and Nickel |
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| Authors: | G Kova?evi? R Kastori LJ Merkulov |
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| Institution: | (1) Institute of Biology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Yugoslavia;(2) Institute of Field and Vegetable Crops and Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Yugoslavia |
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| Abstract: | The effects of 1 mM cadmium, lead and nickel on dry mass, Cd, Pb, and Ni contents, and changes in leaf structure in young
wheat plants were studied. In leaves, Cd content was highest, followed by Pb and Ni, in roots Cd content was also highest,
but followed by Ni and Pb. Roots accumulated considerably larger amounts of the three heavy metals than leaves. Largest reductions
of leaf and root mass were obtained with Cd. Pb and Ni effects were almost equal. Ni excess had a strong negative effect on
mesophyll thickness, while Cd mostly reduced the number and size of vascular bundles and vessel diameter. High Pb reduced
the diameter of vessels causing their different deformations.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | anatomy epidermis heavy metals mesophyll Triticum aestivum vascular bundles |
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