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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/05/2018 |
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Data da última atualização: |
17/06/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LIMA, A. T.; CUNHA, P. H. de J. da; DANTAS, B. F.; MEIADO, M. V. |
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Afiliação: |
AYSLAN TRINDADE LIMA, UNIVERSIDADE FEDERAL DE SERGIPE; PAULO HENRIQUE DE JESUS DA CUNHA, UNIVERSIDADE FEDERAL DE SERGIPE; BARBARA FRANCA DANTAS, CPATSA; MARCOS VINICIUS MEIADO, UNIVERSIDADE FEDERAL DE SERGIPE. |
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Título: |
Does discontinuous hydration of Senna spectabilis (DC.) H.S. Irwin & Barneby var. excelsa (Schrad.) H.S. Irwin & Barneby (Fabaceae) seeds confer tolerance to water stress during seed germination? |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Seed Science, , v. 40, n. 1, p. 36-43, 2018. |
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DOI: |
10.1590/2317-1545v40n1182838 |
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Idioma: |
Inglês |
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Conteúdo: |
Seed hydration memory is the ability of seeds to retain biochemical and physiological changes caused by discontinuous hydration. This study aimed to determine if Senna spectabilis (DC.) H.S. Irwin & Barneby var. excelsa (Schrad.) H.S.Irwin & Barneby (Fabaceae) present seed memory and evaluate the effects of hydration and dehydration cycles (HD) on the seed germination of this species when submitted to conditions of water stress. Seeds underwent HD cycles (0, 1, 2 and 3 cycles) corresponding to the hydration times X (6 hours), Y (16 hours) and Z (24 hours), determined from the imbibition curve, with 5 hours of dehydration and submitted to water stress conditions. Germination was evaluated at 0.0, -0.1, -0.3, -0.6 and -0.9 MPa, obtained with polyethylene glycol 6000 solution. Germinability (%), mean germination time (days) and hydrotime (MPa d-1) were calculated. The seeds of S. spectabilis var. excelsa are sensitive to the low osmotic potentials tested in this study, however, when submitted to the HD cycles of 16 hours hydration (time Y), the tolerance to water stress conditions is increased. In addition, the observed benefits on the evaluated germination parameters show that S. spectabilis var. excelsa present seed hydation memory. |
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Palavras-Chave: |
Bioma; Estresse hídrico; Planta da Caatinga; Senna spectabilis. |
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Thesagro: |
Canafístula; Germinação; Semente. |
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Thesaurus Nal: |
Natural resources. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02134naa a2200265 a 4500
001 2091955
005 2024-06-17
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1590/2317-1545v40n1182838$2DOI
100 1 $aLIMA, A. T.
245 $aDoes discontinuous hydration of Senna spectabilis (DC.) H.S. Irwin & Barneby var. excelsa (Schrad.) H.S. Irwin & Barneby (Fabaceae) seeds confer tolerance to water stress during seed germination?$h[electronic resource]
260 $c2018
520 $aSeed hydration memory is the ability of seeds to retain biochemical and physiological changes caused by discontinuous hydration. This study aimed to determine if Senna spectabilis (DC.) H.S. Irwin & Barneby var. excelsa (Schrad.) H.S.Irwin & Barneby (Fabaceae) present seed memory and evaluate the effects of hydration and dehydration cycles (HD) on the seed germination of this species when submitted to conditions of water stress. Seeds underwent HD cycles (0, 1, 2 and 3 cycles) corresponding to the hydration times X (6 hours), Y (16 hours) and Z (24 hours), determined from the imbibition curve, with 5 hours of dehydration and submitted to water stress conditions. Germination was evaluated at 0.0, -0.1, -0.3, -0.6 and -0.9 MPa, obtained with polyethylene glycol 6000 solution. Germinability (%), mean germination time (days) and hydrotime (MPa d-1) were calculated. The seeds of S. spectabilis var. excelsa are sensitive to the low osmotic potentials tested in this study, however, when submitted to the HD cycles of 16 hours hydration (time Y), the tolerance to water stress conditions is increased. In addition, the observed benefits on the evaluated germination parameters show that S. spectabilis var. excelsa present seed hydation memory.
650 $aNatural resources
650 $aCanafístula
650 $aGerminação
650 $aSemente
653 $aBioma
653 $aEstresse hídrico
653 $aPlanta da Caatinga
653 $aSenna spectabilis
700 1 $aCUNHA, P. H. de J. da
700 1 $aDANTAS, B. F.
700 1 $aMEIADO, M. V.
773 $tJournal of Seed Science,$gv. 40, n. 1, p. 36-43, 2018.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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