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dc.creatorVieira, Carlos Vinicio-
dc.creatorSilva, Edvaldo A. Amaral da-
dc.creatorAlvarenga, Amauri Alves de-
dc.creatorCastro, Evaristo Mauro de-
dc.creatorToorop, Peter E.-
dc.date.accessioned2018-02-28T13:27:08Z-
dc.date.available2018-02-28T13:27:08Z-
dc.date.issued2010-12-
dc.identifier.citationVIEIRA, C. V. et al. Stress-associated factors increase after desiccation of germinated seeds of Tabebuia impetiginosa Mart. Plant Growth Regulation, [S.l.], v. 62, n. 3, p. 257–263, Dec. 2010.pt_BR
dc.identifier.urihttps://link.springer.com/article/10.1007/s10725-010-9496-3pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/28735-
dc.description.abstractImproved re-establishment of desiccation tolerance was studied in germinated seeds of Tabebuia impetiginosa Mart. by exposing to a polyethylene glycol solution prior to desiccation. The effects of different osmotic potentials and drying rates were studied. In addition, temporary temperature stress and exogenous abscisic acid were applied to evaluate their effect on desiccation tolerance of the protruded radicle. An osmotic potential of −1.7 MPa at 5°C followed by slow drying was most effective in the re-establishment of desiccation tolerance in protruded radicles with a length up to 3 mm. An osmotic potential of −1.4 or −2.0 MPa was less effective. Fast drying completely prevented the re-induction of desiccation tolerance. Cold shock or heat shock prior to osmotic treatment as well as abscisic acid added to the osmotic solution improved desiccation tolerance of protruded radicles. Surprisingly, survival of the germinated seed did not depend on re-establishment of desiccation tolerance in the protruded radicle. Even after the protruded radicle became necrotic and died, the production of adventitious roots from the hypocotyls allowed for survival and the development of high quality seedlings. Thus, T. impetiginosa appeared to be well adapted to the seasonally dry biome in which the species thrives via mechanisms that offer protection against desiccation in the young seedling stage.pt_BR
dc.languageen_USpt_BR
dc.publisherSpringerpt_BR
dc.rightsrestrictAccesspt_BR
dc.sourcePlant Growth Regulationpt_BR
dc.subjectAbscisic acidpt_BR
dc.subjectCold shockpt_BR
dc.subjectDesiccation tolerancept_BR
dc.subjectGerminated seedpt_BR
dc.subjectHeat shockpt_BR
dc.subjectOsmotic stresspt_BR
dc.titleStress-associated factors increase after desiccation of germinated seeds of Tabebuia impetiginosa Mart.pt_BR
dc.typeArtigopt_BR
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