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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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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: |
25/05/2018 |
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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, Mestrando da UFS; PAULO HENRIQUE DE JESUS DA CUNHA, UFS; BARBARA FRANCA DANTAS, CPATSA; MARCOS VINICIUS MEIADO, UFS. |
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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 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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Registro original: |
Embrapa Semiárido (CPATSA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Meio Ambiente. |
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Data corrente: |
14/01/2008 |
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Data da última atualização: |
21/10/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
LIMA, L. M.; WATRIN, O. dos S.; PESSOA, M. C. P. Y.; PEREIRA, A. S.; CAMPINAS, D. do S. N.; FIGUEIREDO, R. de O.; COSTA, F. R. da. |
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Afiliação: |
Lilianne Maia Lima, bolsista CNPq/Embrapa; ORLANDO DOS SANTOS WATRIN, CPATU; MARIA CONCEICAO PERES YOUNG PESSOA, CNPMA; ANDERSON SOARES PEREIRA, CNPMA; Danielle do Socorro Nunes Campinas, bolsista CNPq/Embrapa; RICARDO DE OLIVEIRA FIGUEIREDO, CPATU; Francisco Ribeiro da Costa, UFPA. |
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Título: |
Simulação da movimentação de agrotóxicos no solo com o uso de geotecnologias, como instrumento para avaliação do potencial de risco de contaminação de águas subterrâneas na Amazônia Oriental. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 13., 2007, Florianópolis. Anais... São José dos Campos: INPE, 2007. |
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Páginas: |
p. 3397-3404. |
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Idioma: |
Português |
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Conteúdo: |
Pesticides use represents a great environmental risk with high economic cost. The objective of this study is to investigate groundwater contamination risk in a small watershed in northeastern Pará State, Brazil, coupling remote sensing, GIS techniques, and simulations. We have confirmed a high risk exposure to contamination by Dimethoate in 67.76 ha, which represents 1.67% of the total watershed area. According to these analyses, Dimethoate has the potential to reach 12.96 m depth in the soil. The groundwater in the study area has a high risk of exposure to contamination by this pesticide, as the water table depth ranges from 1.5 to 13.0 meters. The shallow water table together with soil and geological characteristics increases the potential risk of contamination of groundwater. |
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Palavras-Chave: |
Brasil; Microbacia hidrográfica. |
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Thesagro: |
Agrotóxico; Água; Águas subterrâneas; Contaminação; Microbacia; Recurso Hídrico; Sensoriamento Remoto; Simulação; Solo. |
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Thesaurus NAL: |
Amazonia. |
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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/94118/1/3397-3404.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/61478/1/2007AA001.pdf
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Marc: |
LEADER 01927nam a2200337 a 4500
001 1401738
005 2022-10-21
008 2007 bl uuuu u00u1 u #d
100 1 $aLIMA, L. M.
245 $aSimulação da movimentação de agrotóxicos no solo com o uso de geotecnologias, como instrumento para avaliação do potencial de risco de contaminação de águas subterrâneas na Amazônia Oriental.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 13., 2007, Florianópolis. Anais... São José dos Campos: INPE$c2007
300 $ap. 3397-3404.
520 $aPesticides use represents a great environmental risk with high economic cost. The objective of this study is to investigate groundwater contamination risk in a small watershed in northeastern Pará State, Brazil, coupling remote sensing, GIS techniques, and simulations. We have confirmed a high risk exposure to contamination by Dimethoate in 67.76 ha, which represents 1.67% of the total watershed area. According to these analyses, Dimethoate has the potential to reach 12.96 m depth in the soil. The groundwater in the study area has a high risk of exposure to contamination by this pesticide, as the water table depth ranges from 1.5 to 13.0 meters. The shallow water table together with soil and geological characteristics increases the potential risk of contamination of groundwater.
650 $aAmazonia
650 $aAgrotóxico
650 $aÁgua
650 $aÁguas subterrâneas
650 $aContaminação
650 $aMicrobacia
650 $aRecurso Hídrico
650 $aSensoriamento Remoto
650 $aSimulação
650 $aSolo
653 $aBrasil
653 $aMicrobacia hidrográfica
700 1 $aWATRIN, O. dos S.
700 1 $aPESSOA, M. C. P. Y.
700 1 $aPEREIRA, A. S.
700 1 $aCAMPINAS, D. do S. N.
700 1 $aFIGUEIREDO, R. de O.
700 1 $aCOSTA, F. R. da
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Embrapa Amazônia Oriental (CPATU) |
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