African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Effects of pre-germination treatments on Copaifera langsdorffii seeds

Camila Andrade Silva*
  • Camila Andrade Silva*
  • Instituto Federal de Rondônia, Zip Code 76878-899, Ariquemes, Brazil.
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Alexsandro Lara Teixeira
  • Alexsandro Lara Teixeira
  • Embrapa Rondônia, Zip Code 76815-800, Porto velho, Brazil.
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Rosa Luxemburgo Albuquerque Gomes
  • Rosa Luxemburgo Albuquerque Gomes
  • Faculdade de Rondônia, Zip Code 76815-800, Porto Velho, Brazil.
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Fabio Renato Oliveira Marques
  • Fabio Renato Oliveira Marques
  • Faculdade de Rondônia, Zip Code 76815-800, Porto Velho, Brazil.
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Aline Aparecida Smychniuk da Silva
  • Aline Aparecida Smychniuk da Silva
  • Instituto Nacional de Pesquisas da Amazônia, Zip Code 69067-375, Manaus, Brazil.
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Ana Carolina Andrade Silva
  • Ana Carolina Andrade Silva
  • Universidade Federal de Viçosa, Zip Code 36570-000, Viçosa, Brazil.
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  •  Received: 08 March 2016
  •  Accepted: 15 September 2016
  •  Published: 06 October 2016

Abstract

Copaifera langsdorffii has been intensely exploited, since it attracts several interests, and is now on the list of endangered species. Due to this risk of extinction, seedling production of this species has important economic and social value. The aim of this study was to evaluate seed germination of C. langsdorffii subjected to different pre-germination treatments for breaking seeddormancy: i) control; ii) immersion in sulfuric acid (98%) for 2 min; iii) immersion in sulfuric acid for 10 min; iv) removal of the seed coat; v) immersion in distilled water for 24 h; and vi) immersion in boiling water at 80°C for 2 minutes. In the period of 34 days after setting up the experiment, there was 70% germination of the seeds subjected to the method of immersion in sulfuric acid (98%) for 10 minutes, 63% of seeds in which the seed coats were removed, and below 27% in the rest. In this context, it may be concluded that the method of immersion in sulfuric acid for 10 min proved to be more effective and advantageous for overcoming dormancy.

Key words: Arboreal species, Copaiba, germination, dormancy.