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“Bracatinga” (Mimosa scabrella Bentham), a multipurpose tree growing in Southern Brazil: chromosome number and genetic variation

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Abstract

Mimosa scabrella Bentham, popularly known as “bracatinga” in Brazil, is a very important multipurpose tree especially in the southern region of the country, where it occurs naturally in plant associations called “bracatingais”. The species is presently in danger of losing genetic variability as it normally occurs in regions subjected to intense urbanization, industrialization, agriculture and cattle raising. Aiming at broadening the knowledge about the species we have investigated cytogenetic characteristics and genetic diversity among natural populations. The results show that all populations are tetraploid (2n = 4× = 52) and that there is a high genetic diversity among the populations. There is still time to avoid genetic erosion of M. scabrella if the areas where the species occurs are protected.

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Acknowledgments

To Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil, for financial support. To Dr. Miguel Dall′Agnol, Departamento de Plantas Forrageiras e Agrometeorologia, for allowing the utilization of his laboratory facilities.

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Author notes

  1. Nair Dahmer

    Present address: Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, Cidade Universitária “Zeferino Vaz”, Caixa Postal 6109, Campinas, SP, 13.083-970, Brazil

Authors and Affiliations

  1. Depto. de Plantas Forrageiras e Agrometeorologia, UFRGS/FA, C.P. 15100, Porto Alegre, RS, 91501-970, Brazil

    Nair Dahmer, Maria Teresa Schifino-Wittmann, Divanilde Guerra & Roberto Luis Weiler

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  1. Nair Dahmer
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  2. Maria Teresa Schifino-Wittmann
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  3. Divanilde Guerra
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  4. Roberto Luis Weiler
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Correspondence to Maria Teresa Schifino-Wittmann.

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Dahmer, N., Schifino-Wittmann, M.T., Guerra, D. et al. “Bracatinga” (Mimosa scabrella Bentham), a multipurpose tree growing in Southern Brazil: chromosome number and genetic variation. Genet Resour Crop Evol 60, 377–383 (2013). https://doi.org/10.1007/s10722-012-9931-6

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  • DOI: https://doi.org/10.1007/s10722-012-9931-6

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