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Toxic trace elements effects on seed germination of four Brazilian Savanna tree species

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The toxic effects of arsenic (0, 10, 50, 100 mg L−1), cadmium (0, 0.1, 0.3, 0.7, 1.1 mg L−1) and zinc (0, 50, 80, 120, 200 mg L−1) on seed germination of four Brazilian Savanna tree species (Anadenanthera peregrina, Cecropia hololeuca, Handroantrus serratifolius, and Myracrodruon urundeuva) was studied. Seeds of the different species varied in their ability to germinate under trace element stress. The deleterious effects of As were notable. We verified a possible As-tolerance of M. urundeuva seeds at concentrations up to 10 mg L−1 and, unlike the other species tested, seeds of this plant were highly sensitive to Cd. Zn had negative effects on seed germination even at low doses, except for A. peregrina. Germination induction at the highest Cd doses and with 50 mg L−1 Zn was observed in C. hololeuca and A. peregrina seeds, respectively.
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Document Type: Research Article

Publication date: October 1, 2012

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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