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Genetic Resources and Crop Evolution

, Volume 60, Issue 1, pp 377–383 | Cite as

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

  • Nair Dahmer
  • Maria Teresa Schifino-Wittmann
  • Divanilde Guerra
  • Roberto Luis Weiler
Notes on Neglected and Underutilized Crops

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.

Keywords

Genetic diversity Leguminosae Mimosa scabrella Mimosoideae Multipurpose trees 

Notes

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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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  • Nair Dahmer
    • 1
    • 2
  • Maria Teresa Schifino-Wittmann
    • 1
  • Divanilde Guerra
    • 1
  • Roberto Luis Weiler
    • 1
  1. 1.Depto. de Plantas Forrageiras e AgrometeorologiaUFRGS/FAPorto AlegreBrazil
  2. 2.Departamento de Biologia Vegetal, Instituto de BiologiaUniversidade Estadual de CampinasCampinasBrazil

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