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vol. 12, nr. 2 (2008)
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Effect of cadmium ions on apparent surface area of barley roots (Hordeum vulgare L.)
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Natalia Hrebelna1, Alicja Szatanik-Kloc2, Zofia Sokołowska2
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1 Department of Ecology and Biology, Lviv State Agrarian University, ul. V. Velukogo 1, Dublyany, Ukraine |
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2 Institute of Agrophysics, Polish Academy of Sciences, ul. Doświadczalna 4, 20-290 Lublin |
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vol. 12 (2008), nr. 2,
pp. 337-345
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abstract:
The aim of investigations was to determine the influence of intensity and cadmium stress time on changes of apparent surface area of the roots. Spring barley roots variety Peas were studied. The plants were taken from the Dublany research field of the Lvov State Agrarian University. Cadmium was added to the soil (leached forest-meadow chernozem) in the form of CdCl2 at concentrations of 0, 3, 15, 30 mg Cd+2 per kg of the soil. From the isotherms, apparent surface area was calculated using BET theory. The apparent surface area of the roots of the emergence stage and full maturity stage were studied. Under the influence of Cd+2 ions, apparent surface area decreased. Significant difference of the surface area was also observed for roots in the emergence stage and with cadmium concentration of 3 mg per kg of soil. Visible changes of the surface area (for all stress doses) were observed for roots in the full maturity stage. Stress time influenced significantly the surface area changes. It is probably connected with changes of physiological processes in the plant under influence of protracted stress and with tolerance mechanisms of cadmium stress.
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keywords:
apparent surface area, cadmium, roots
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original in:
Polish
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