Semiquantitative estimates of Al and other cations in the leaf tissues of some Al-accumulating species using electron probe microanalysis |
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Authors: | M. Haridasan Peter G. Hill Douglas Russell |
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Affiliation: | (1) Departamento de Biología Vegetal, Universidade de Brasília, Caixa Postal 153081, Brasília, DF, Brazil;(2) Grant Institute of Geology, University of Edinburgh, EH9 3JW Edinburgh, UK |
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Abstract: | Electron probe microanalysis of transverse sections was used to provide semiquantitative estimates of Al and other cations in the leaf tissues of some Al-accumulating plants of the cerrado vegetation of central Brazil. Concentrations of Al were generally higher than those of other cations in the phloem elements of these plants growing on dystrophic as well as fertile acid soils. When one of the Al-accumulating species,Vochysia thyrsoidea, was grown in a calcareous soil, the concentration of Al in the phloem elements of leaves was lower than that of Ca and K though the cotyledons showed higher concentrations of Al than those of other cations. |
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Keywords: | Aluminium-accumulating plants Cerrado vegetation EPMA Ion contents |
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