%0 Journal Article
%T Mobiliza£¿£¿o de ¨¢gua e conserva£¿£¿o da viabilidade de embri£¿es de sementes recalcitrantes de ing¨¢ (Inga vera Willd. subsp. affinis (DC.) T. D. Pennington)
%A Andr¨¦o
%A Yara
%A Nakagawa
%A Jo£¿o
%A Barbedo
%A Claudio Jos¨¦
%J Brazilian Journal of Botany
%D 2006
%I Scientific Electronic Library Online
%R 10.1590/S0100-84042006000200012
%X the water content of anhydrobiotic (orthodox) seeds is usually reduced to low values and its metabolism is reduced to a level that viability can be preserved for long periods. in contrast, typical non-anhydrobiotic (recalcitrant) seeds are intolerant to desiccation, possess lower longevity, and need a minimum water level to maintain viability, but the metabolism is still too active leading to a short seed longevity. in the present research "inga" seed embryos were stored in contact with polyethylene glycol 6000 (peg) solutions, at pre-defined water potential with the objective of improving storability and longevity. results indicated that germination of embryos kept in peg solution at -2.4 mpa was higher than 80% after 90 days of storage at 10 oc, while the germination of embryos kept at distilled water (0 mpa), at the same temperature, was lower than 60%.
%K osmotic potential
%K physiological quality
%K storage.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0100-84042006000200012&lng=en&nrm=iso&tlng=en