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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 29, No. 1, 2019, pp. 105-115
Bioline Code: cf19009
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 29, No. 1, 2019, pp. 105-115

 en Breaking dormancy and vigor tests on (Dimorphandra gardneriana Tulasne) SEEDS
Ursulino, Marina Matias; Alves, Edna Ursulino; Araњjo, Paulo Costa; Alves, Magnѓlia Martins; Ribeiro, Thiago de Souza & Silva, Rosemere dos Santos

Abstract

The objective of this study was to evaluate the efficiency of different methods of overcoming of dormancy in Dimorphandra gardneriana Tulasne seeds, aiming to provide technical and scientific knowledge to enable the creation of a protocol for germination. In an experiment conducted at ‘Laboratѓrio de Anсlise de Sementes’, Centro de Ciъncias Agrсrias, Universidade Federal da Paraэba (CCA-UFPB), in a completely randomized experimental design, seeds of fava d’anta were subjected to the following treatments: control consisting of non-carified seeds mechanically scarified with sandpaper NК 120, mechanically scarified seeds with sandpaper and soaked in distilled water for 6, 12, 18 and 24 hours, seeds subjected to blunt the region opposite to the hilum of nail with pliers, seeds subjected to blunt the region opposite to the hilum of nail with pliers and put on immersion in water distilled for 6, 12, 18 and 24 hours, chemical scarification with concentrated sulfuric acid for 5, 10 and 15 minutes. After the treatments, the seeds were tested for germination and vigor (emergence, speed of germination and emergence, length and dry weight of roots and hypocotyl). Mechanical scarification with sandpaper and lopping followed by immersion in distilled water for six hours favor the percentage of seed germination and the seedling emergence of Dimorphandra gardneriana and treatments using sulfuric acid dramatically reduced the strength of these seeds.

Keywords
Faveira; Viability; Scarification; Medicinal

 
 pt Superaчуo de dormъncia e vigor em sementes de Fava-d’Anta (Dimorphandra gardneriana Tulasne)
Ursulino, Marina Matias; Alves, Edna Ursulino; Araњjo, Paulo Costa; Alves, Magnѓlia Martins; Ribeiro, Thiago de Souza & Silva, Rosemere dos Santos

Resumo

O objetivo neste trabalho foi avaliar a eficiъncia de diferentes mщtodos para a superaчуo da dormъncia em sementes Dimorphandra gardneriana Tulasne, visando fornecer conhecimentos tщcnico-cientэficos que permitam a criaчуo de um protocolo de germinaчуo. Em um experimento realizado no Laboratѓrio de Anсlise de Sementes do Centro de Ciъncias Agrсrias da Universidade Federal da Paraэba (CCA-UFPB), em delineamento experimental inteiramente ao acaso, as sementes de fava-d’anta foram submetidas aos seguintes tratamentos: testemunha que consistiu de sementes nуo escarificadas, sementes escarificadas mecanicamente com lixa nА120, sementes escarificadas mecanicamente com lixa e submetidas р embebiчуo em сgua destilada por 6, 12, 18 e 24 horas, sementes submetidas ao desponte na regiуo oposta ao hilo com alicate de unha, sementes submetidas ao desponte na regiуo oposta ao hilo com alicate de unha e postas em embebiчуo em сgua destilada por 6, 12, 18 e 24 horas, escarificaчуo quэmica com сcido sulfњrico concentrado por 5, 10 e 15 minutos. Apѓs a aplicaчуo dos tratamentos as sementes foram submetidas a testes de germinaчуo e vigor (emergъncia, эndice de velocidade de germinaчуo e de emergъncia, comprimento e massa seca de hipocѓtilo e raэzes). A escarificaчуo mecтnica com lixa e o desponte seguido de imersуo em сgua destilada por seis horas favorecem a porcentagem de germinaчуo de sementes e emergъncia de plтntulas de Dimorphandra gardneriana, e os tratamentos utilizando сcido sulfњrico reduziram drasticamente o vigor destas sementes.

Palavras-chave
Faveira; Viabilidade; Escarificaчуo; Medicinal

 
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Alternative site location: http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/index

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