SciELO - Scientific Electronic Library Online

 
vol.33 número4Armazenamento de sementes de citrumelo 'Swingle' em diferentes estádios de maturação submetidas a tratamentos fungicidasRendimento e qualidade de sementes de arroz irrigado em função da adubação com boro índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista Brasileira de Sementes

versão impressa ISSN 0101-3122

Resumo

POZITANO, Marina  e  ROCHA, Sandra Cristina dos Santos. Physical characterization and germination of Senna macranthera seeds. Rev. bras. sementes [online]. 2011, vol.33, n.4, pp.777-784. ISSN 0101-3122.  http://dx.doi.org/10.1590/S0101-31222011000400020.

Poor knowledge of the physical traits of forest species seeds causes difficulties in developing methodologies for their assessment and preservation. Senna macranthera (Collad.) Irwin et Barn. is a leguminous pioneer plant that belongs to the Caesalpinioideae. It is popularly known as "fedegoso" and its seeds have tegumentary dormancy. In this study, physical characterization of fedegoso seeds was obtained by evaluating the Sauter mean diameter, sphericity, densities (real, apparent and bulk), porosity, dynamic angle of repose and weight of 1000 seeds: 3.3 mm; 0.52; 1397.2 kg.m-³; 1371.9 kg.m-³; 884.4 kg.m-³; 1.81%; 10º and 41.05 g, respectively. S. macranthera seeds were packed in plastic bags and stored in a conventional refrigerator at 5 ºC for 280 days and analyzed periodically for germination and moisture content. The seeds were chemically scarified by immersion in concentrated sulphuric acid for 20 minutes to break dormancy. The germination tests showed that seeds remained viable during storage.

Palavras-chave : fedegoso; density; porosity; sphericity; viability.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons