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	Provedor de dados Scientia Agricola (1) Autor Carvalho,José Edmar Urano de (1) Cruz,Eniel David (1) Queiroz,Rafaela Josemara Barbosa (1) Palavra-chave Amazonian region (1) Hard seed (1) Physical dormancy (1) Seeds coat impermeability (1) Tropical species (1) Tipo do documento Info:eu-repo/semantics/report (1) Ano 2007 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Scarification with sulphuric acid of Schizolobium amazonicum Huber ex Ducke seeds - FABACEAE Scientia Agricola Cruz,Eniel David; Carvalho,José Edmar Urano de; Queiroz,Rafaela Josemara Barbosa. Seed coat impermeability to water occurs in many species, including Schizolobium amazonicum Huber ex Ducke. To promote germination in seeds with coat impermeability the use of sulphuric acid (H2SO4) is recommended. The objective of this study was to identify a better time for the scarification with sulphuric acid for S. amazonicum seeds. The effect of scarification with sulphuric acid for 20, 40 and 60 min on germination and speed germination was studied for seeds that were either sowed immediately after scarification or after a 24-hour period of immersion in water. Seeds were sown on a mix of sand and sawdust (1:1). The experimental design was completely randomized with four replications of 50 seeds. The statistical analysis of germination was carried out... Tipo: Info:eu-repo/semantics/report Palavras-chave: Tropical species; Amazonian region; Hard seed; Seeds coat impermeability; Physical dormancy. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300017 Registros recuperados: 1 Primeira ... 1 ... Última

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