Abstract
Because of their chemical and physical similarities, plant uptake of S and Se are closely related. Barley (Hordeum vulgare L.) and rice (Oryza sativa L.) were grown in greenhouse solution culture to examine the synergistic interactions between SO4 and Se6+ in plant uptake. In the presence of low concentrations of solution SO4, shoot and root yields were decreased with additions of Se6+. However, when SO4 was present in elevated concentrations, no Se-induced yield reduction occurred. A synergistic interaction between SO4 and Se6+ caused an increase in the shoot S concentrations with increasing concentrations of Se6+ at low SO4 solution concentrations. At elevated SO4 concentrations, no synergism was osberved. Selenium had a lesser effect on the S concentration in plant roots.
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Mikkelsen, R.L., Wan, H.F. The effect of selenium on sulfur uptake by barley and rice. Plant Soil 121, 151–153 (1990). https://doi.org/10.1007/BF00013109
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DOI: https://doi.org/10.1007/BF00013109