Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/950565
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dc.contributor.authorREIS, R. C. R.pt_BR
dc.contributor.authorDANTAS, B. F.pt_BR
dc.contributor.authorPELACANI, C. R.pt_BR
dc.date.accessioned2013-03-11T23:31:47Z-
dc.date.available2013-03-11T23:31:47Z-
dc.date.created2013-02-22pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationRevista Brasileira de Sementes, v. 34, n. 4, p. 580-588, 2012.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/950565pt_BR
dc.descriptionSome environmental factors, including water availability, may influence seed germination. This study investigated the germination of E. velutina seeds submitted to different osmotic potentials and mobilization of reserves during water-stress. Scarified seeds were arranged in paper rolls and soaked in solutions of Polyethylene Glycol (PEG) prepared in osmotic potentials 0.0, -0.2, -0.4, -0.6, and -0.8 MPa and kept into a seed germinator, at 25 °C, and 12/12 h photoperiod (L/D), during 10 days. The percentage, mean time, mean speed, germination speed index; as well as the germination uniformity coefficient were assessed. During germination process the total soluble sugars, reducing sugars, soluble protein, and total amino acids were quantified in the cotyledon, hypocotyl and radicle of soaked seeds and cotyledons of quiescent seeds (control). There was influence of osmotic potential on E. velutina seed germination. The germination percentage remained at high levels until -0.6 MPa and above this osmotic potential there has been no germination. The mobilization of stored reserves of carbon and nitrogen in E. velutina seeds was also influenced by water-stress. There was sensitiveness between -0.2 and -0.6 MPa; however, the degradation and the mobilization of reserves was slower when the osmotic potential decreased.eng
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectStresse hídricopt_BR
dc.subjectProteínas solúveiseng
dc.subjectCarbono de reservaeng
dc.titleMobilization of reserves and germination of seeds of Erythrina velutina Willd. (Leguminosae - Papilionoideae) under different osmotic potentials.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2013-03-11T23:31:47Zpt_BR
dc.subject.thesagroRecurso naturalpt_BR
dc.subject.thesagroCaatingapt_BR
dc.subject.thesagroGerminaçãopt_BR
dc.subject.thesagroMulungupt_BR
dc.subject.thesagroSementept_BR
dc.subject.nalthesaurusNatural resourceseng
dc.subject.nalthesaurusWater stresseng
dc.subject.nalthesaurusErythrina velutinaeng
riaa.ainfo.id950565pt_BR
riaa.ainfo.lastupdate2013-03-11pt_BR
dc.contributor.institutionRENATA CONDURU RIBEIRO REIS; BARBARA FRANCA DANTAS, CPATSA; CLAUDINÉIA REGINA PELACANI.pt_BR
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