SciELO - Scientific Electronic Library Online

vol.32 issue3Osmotic priming methodologies in relation to the physiological performance of rangpur lime seeds (Citrus limonia Osbeck)Tetrazolium test for evaluating triticale seed viability author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista Brasileira de Sementes

Print version ISSN 0101-3122


CORTE, Viviana Borges; BORGES, Eduardo Euclydes de Lima e; GONCALVES, José Francisco de Carvalho  and  SILVA, Mirian Sousa. Alterations in the lipid and soluble sugar content of melanoxylon brauna seeds during natural and accelerated ageing. Rev. bras. sementes [online]. 2010, vol.32, n.3, pp.152-162. ISSN 0101-3122.

The decay of seeds is irreversible and at best can only be delayed by applying techniques that reduce the velocity of the metabolic reactions involved. There is little information on the biochemistry of tropical forest tree seeds related to their storability. It was investigated the influence of the composition of lipids and soluble sugars of two storage compartments, the cotyledons and the embryonic axis, of Melanoxylon brauna Schot. (Leguminosae- Caesalpinioideae), a hardwood known as black brauna, seeds stored at 20 ºC for 0, 3, 6, 9 and 12 months (natural ageing) and for 0, 24, 48, 72 and 96 hours at 40 ºC (accelerated ageing). The levels of fatty acids and monosaccharides varied differentially in each of the embryo storage compartments. Changes in oligosaccharide levels were similar for both types of ageing, diminishing in both compartments. Ageing can be attributed to the significant decrease of oligosaccharides and the increase of glucose in both types of ageing and both embryo compartments.

Keywords : carbohydrates; forest; lipids; native species; storage.

        · abstract in Portuguese     · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License