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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
20/09/2004 |
Data da última atualização: |
27/07/2017 |
Autoria: |
GAZZONI, D. L. |
Título: |
Dissecando os insetos. |
Ano de publicação: |
2004 |
Fonte/Imprenta: |
Cultivar, grandes culturas, Pelotas, v.6, n. 65,p. 42-43, set. 2004. |
Idioma: |
Português |
Palavras-Chave: |
Insetos. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00322naa a2200121 a 4500 001 1459385 005 2017-07-27 008 2004 bl uuuu u00u1 u #d 100 1 $aGAZZONI, D. L. 245 $aDissecando os insetos. 260 $c2004 653 $aInsetos 773 $tCultivar, grandes culturas, Pelotas$gv.6, n. 65,p. 42-43, set. 2004.
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
25/05/2018 |
Data da última atualização: |
25/05/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
LIMA, A. T.; CUNHA, P. H. de J. da; DANTAS, B. F.; MEIADO, M. V. |
Afiliação: |
AYSLAN TRINDADE LIMA, Mestrando da UFS; PAULO HENRIQUE DE JESUS DA CUNHA, UFS; BARBARA FRANCA DANTAS, CPATSA; MARCOS VINICIUS MEIADO, UFS. |
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? |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Journal of Seed Science, , v. 40, n. 1, p. 36-43, 2018. |
DOI: |
10.1590/2317-1545v40n1182838 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Bioma; Estresse hídrico; Planta da Caatinga; Senna spectabilis. |
Thesagro: |
Canafístula; Germinação; Semente. |
Thesaurus NAL: |
Natural resources. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02134naa a2200265 a 4500 001 2091955 005 2018-05-25 008 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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