Breaking dormancy and vigor tests on (Dimorphandra gardneriana Tulasne) SEEDS

• Autor(a) principal: Ursulino, Marina Matias
• Data de Publicação: 2019
• Outros Autores: Alves, Edna Ursulino, Araújo, Paulo Costa, Alves, Magnólia Martins, Ribeiro, Thiago de Souza, Silva, Rosemere dos Santos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/10460
• topic: Faveira; Viability; Scarifcation; Medicinal; Faveira; Viabilidade; Escarificação; Medicinal

The objective of this study was to evaluate the effciency of different methods of overcoming of dormancy in Dimorphandra gardneriana Tulasne seeds, aiming to provide technical and scientifc knowledge to enable the creation of a protocol for germination. In an experiment conducted at ‘Laboratório de Análise de Sementes’, Centro de Ciências Agrárias, Universidade Federal da Paraíba (CCA-UFPB), in a completely randomized experimental design, seeds of fava d’anta were subjected to the following treatments: control consisting of non-carifed seeds mechanically scarifed with sandpaper Nº 120, mechanically scarifed 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 scarifcation 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 scarifcation 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.