Liečivé rastliny v meniacich sa environmentálnych podmienkach

Vliv abiotických a biotických stresorů na vlastnosti rostlin 11.5.2005
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Effect of copper(II) chelates on maize (Zea mays L.)
Key words: copper – chelate – Zea mays L. – inhibition – S-donor ligands – plant growth
Summary
Toxic effects of three pyruvideneglycinatocopper (II) chelates with additional S-donor
ligands: thiourea, ethylenethiourea and N-(2-chlorophenyl)thiourea (([Cu(pyrgly)(tu)(H 2 O)]
(II), [Cu(pyrgly)(ettu)(H 2 O)] (III) and [Cu(pyrgly)(chftu)] (IV)) on some production
characteristics (root and shoot length, cumulative shoot length, dry mass of roots stems and
leaves) of maize (Zea mays L.) plants cultivated in hydroponic solutions were studied. The
obtained results were compared with those obtained for CuCl 2 (I). In roots, stems and leaves
of maize plants cultivated in the presence of 100 μmol dm -3 of the studied chelates copper
content was determined using anodic stripping voltammetry. The majority of the
accumulated Cu was allocated in roots. The translocation of Cu into above-ground parts of
plant (stem, leaves) depended on the structure of additional S-donor ligand. The most
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