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Maturation of seeds of Caesalpinia echinata Lam. (Brazilwood), an endangered leguminous tree from the Brazilian Atlantic Forest BABT
Borges,Igor Ferrari; Giudice Neto,João Del; Bilia,Denise Augusta Camargo; Figueiredo-Ribeiro,Rita de Cássia Leone; Barbedo,Claudio José.
The present work describes changes during the maturation process of seeds of Caesalpinia echinata Lam. Individual flowers were tagged in the day of their anthesis and the pods were collected directly from the branches from 32 to 65 days after flowering (DAF). Results obtained suggested that physiological maturity of C. echinata seeds occurred ca. 60-65 DAF, immediately before shedding, when seeds had 30-40% water content.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Harvesting; Pau-brasil pernambuco physiological maturity seed germination.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000800001
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Partitioning of water soluble carbohydrates in vegetative tissues of Lolium multiflorum Lam. ssp. italicum cv. Lema Braz. J. Plant Physiol.
Sandrin,Carla Zuliani; Domingos,Marisa; Figueiredo-Ribeiro,Rita de Cássia Leone.
In temperate grasses, fructans are the major storage polysaccharides, being accumulated mainly in mature leaf sheaths, and also in the roots. The partitioning of carbohydrates within different organs regulates plant growth and development. The aim of the present work was to analyze the partitioning of water soluble carbohydrates in five different parts (elongating leaf blades, expanded leaf blades, upper and lower segments of the stubble, and roots) of plants of L. multiflorum cv. Lema, in order to contribute to an understanding of soluble carbohydrates distribution in these plants. Soluble carbohydrates and total fructose were analyzed in plants cultivated during 4 months in a glasshouse, by colorimetric, TLC and HPAEC-PAD techniques. Results showed that...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fructan; Grass; Italian ryegrass; Sugars.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000200006
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Reserve carbohydrates and lipids from the seeds of four tropical tree species with different sensitivity to desiccation BABT
Mello,Juliana Iura de Oliveira; Barbedo,Claudio José; Salatino,Antonio; Figueiredo-Ribeiro,Rita de Cássia Leone.
Considering the importance of water content for the conservation and storage of seeds, and the involvement of soluble carbohydrates and lipids for embryo development, a comparative study was carried out among the seeds of Inga vera (ingá), Eugenia uniflora (pitanga), both classified as recalcitrant, and Caesalpinia echinata (brazilwood) and Erythrina speciosa (mulungu), considered as orthodox seeds. Low concentrations of cyclitols (0.3-0.5%), raffinose family oligosaccharides (ca. 0.05%) and unsaturated fatty acids (0-19%) were found in the seeds of ingá and pitanga, while larger amounts of cyclitols (2-3%) and raffinose (4.6-13%) were found in brazilwood and mulungu, respectively. These results, in addition to higher proportions of unsaturated fatty acids...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Desiccation tolerance; Fatty acids; Seeds; Starch; Sugars.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400019
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