The Relationship between Salinity and Cadmium Stress in Barley |
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Authors: | I Smýkalová B Záme?níková |
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Institution: | (1) Department of Chemistry, Faculty of Agronomy, Czech University of Agriculture, CZ-16521 Praha, Czech Republic;(2) Department of Botany and Plant Physiology, Faculty of Agronomy, Czech University of Agriculture, CZ-16521 Praha, Czech Republic |
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Abstract: | Distribution of cadmium between roots and shoots of barley was manipulated by the cadmium concentration (0.01 and 0.005 mM
Cd2+), pH (4.6 and 5.9) as well as treatment duration. The prolongation of treatment increased dry mass and content of cadmium
in plants. The cadmium is accumulated mainly in roots. Presence of both, 0.005 mM Cd2+ and 100 mM NaCl in medium at pH 5.9 (Cd-NaCl plants) resulted in the most severe growth inhibition of plants, but about one
half accumulation of cadmium in roots then in a case of only Cd-treated plants. In the Cd-NaCl plants, the net photosynthetic
and transpiration rates were less reduced then in a case of only NaCl-treated plants. The treatments also influenced uptake
of Ca, Cd, Cu, K, Mg, Na and Zn predominantly in roots.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | growth Hordeum vulgare nutrient uptake transpiration photosynthesis |
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