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	Provedor de dados BABT (1) Ciência e Agrotecnologia (1) Autor Dias,Denise Cunha Fernandes dos Santos (1) Machado,Sílvia Rodrigues (1) Miranda,Rafaela Marques de (1) Nascimento,Warley Marcos (1) Picoli,Edgard Augusto de Toledo (1) Silva,Patrícia Pereira da (1) Teixeira,Simone de Pádua (1) Mais... Palavra-chave Reserve substances (2) Cotyledon (1) Embryo (1) Endosperm (1) Germination (1) Harvest (1) Histochemistry (1) Maturity (1) Ultrastructure (1) Vigor (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2017 (1) 2008 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Physiological quality, anatomy and histochemistry during the development of carrot seeds ( Daucus carota L.) Ciência e Agrotecnologia Miranda,Rafaela Marques de; Dias,Denise Cunha Fernandes dos Santos; Picoli,Edgard Augusto de Toledo; Silva,Patrícia Pereira da; Nascimento,Warley Marcos. ABSTRACT The adequate time for carrot seed harvest influences its physiological quality. The objective of this study was to evaluate physiological, anatomical and histochemical changes in carrot seeds harvested at different stages of development and to establish the most appropriate harvest time. Secondary umbels were harvested at 14, 21, 28, 35, 42, 49, 56 and 63 days after anthesis (DAA). For seed anatomical and histochemical characterization, sections were stained with Toluidine blue stain, Xylidine Ponceau, Lugol’s iodine, Sudan Black B and submitted to polarized light. Seed moisture content, seed dry matter, germination, first count, emergence percentage and emergence speed index of seedlings were evaluated. Cultivar Brasília carrot seeds at 14 DAA... Tipo: Info:eu-repo/semantics/article Palavras-chave: Maturity; Harvest; Reserve substances; Germination; Vigor. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200169 Storage sites in seeds of Caesalpinia echinata and C. ferrea (Leguminosae) with considerations on nutrients flow BABT Teixeira,Simone de Pádua; Machado,Sílvia Rodrigues. The seeds of Caesalpinia echinata and C. ferrea behaved as typical endospermic seeds, despite their different morphological classification (exendospermic seeds were described for C. echinata and endospermic seeds for C. ferrea). Then, the aim of this work was to compare, under ultrastructural and histochemical terms, the nature of the storage substances and their accumulation sites, as well as the nutrient flow in seeds of these species. Cotyledons in C. echinata accumulate carbohydrates, lipids and proteins, which are mobilized from the outer to the inner parts as revealed by the position of plasmodesmata. Endosperm in C. ferrea accumulates carbohydrates and in C. echinata accumulates substances during the initial embryogenic phases. Such tissue develops... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cotyledon; Embryo; Endosperm; Histochemistry; Reserve substances; Ultrastructure. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100016 Registros recuperados: 2 Primeira ... 1 ... Última

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