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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
22/02/2013 |
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Data da última atualização: |
13/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
REIS, R. C. R.; DANTAS, B. F.; PELACANI, C. R. |
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Afiliação: |
RENATA CONDURU RIBEIRO REIS; BARBARA FRANCA DANTAS, CPATSA; CLAUDINÉIA REGINA PELACANI. |
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Título: |
Mobilization of reserves and germination of seeds of Erythrina velutina Willd. (Leguminosae - Papilionoideae) under different osmotic potentials. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Revista Brasileira de Sementes, v. 34, n. 4, p. 580-588, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Some 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. |
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Palavras-Chave: |
Carbono de reserva; Proteínas solúveis; Stresse hídrico. |
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Thesagro: |
Caatinga; Germinação; Mulungu; Recurso natural; Semente. |
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Thesaurus Nal: |
Erythrina velutina; Natural resources; Water stress. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/78727/1/Barbara.pdf
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Marc: |
LEADER 02187naa a2200277 a 4500
001 1950565
005 2023-06-13
008 2012 bl uuuu u00u1 u #d
100 1 $aREIS, R. C. R.
245 $aMobilization of reserves and germination of seeds of Erythrina velutina Willd. (Leguminosae - Papilionoideae) under different osmotic potentials.$h[electronic resource]
260 $c2012
520 $aSome 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.
650 $aErythrina velutina
650 $aNatural resources
650 $aWater stress
650 $aCaatinga
650 $aGerminação
650 $aMulungu
650 $aRecurso natural
650 $aSemente
653 $aCarbono de reserva
653 $aProteínas solúveis
653 $aStresse hídrico
700 1 $aDANTAS, B. F.
700 1 $aPELACANI, C. R.
773 $tRevista Brasileira de Sementes$gv. 34, n. 4, p. 580-588, 2012.
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