| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Semiárido. |
|
Data corrente: |
14/12/2009 |
|
Data da última atualização: |
06/10/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SILVA, E. C.; NOGUEIRA, R. J. M. C.; VALE, F. H. A.; ARAUJO, F. P. de; PIMENTA, M. A. |
|
Afiliação: |
ELIZOMAR C. SILVA; REJANE J. M. C. NOGUEIRA; FERNANDO H. A. VALE; FRANCISCO PINHEIRO DE ARAUJO, CPATSA; MARIANA A. PIMENTA. |
|
Título: |
Stomatal changes induced by intermittent drought in four umbu tree genotypes. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Brazilian Journal of Plant Physiology, Campos dos Goytacazes, v. 21, n. 1, p. 33-42, 2009. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Transpiration (E), diffusive resistance (rs) and anatomical parameters were measured in plants of four grafted umbu tree genotypes (GBUs 44, 48, 50 and 68) in order to evaluate alterations induced by intermittent drought and possible genotypic variations. Transpiration measurements were taken daily until stomatal closure by withholding water. Measurements were also taken, when the plants were re-watered and the watering was interrupted again. This cycle was repeated for a period of 31 days (stress period). The control plants were also irrigated daily. A regular pattern in the stomatal opening/closing mechanism was observed throughout the watering period, exhibiting intra-specific differences. Stomatal behavior of GBU 44 and GBU 68 were influenced by air temperature (Tar), relative humidity (RH) and vapor pressure deficit (VPD), whereas GBU 50 was influenced by photosynthetically active radiation (PAR). GBU 48 was not influenced by these environmental factors. Anatomical alterations in response to drought were observed in stomatal density (SD), reductions in the stomatal index (SI) and stomatal aperture size (SA). The anatomical features of the GBU 48 genotype remained unaltered. There was an inversion in tissue proportion in GBU 44 under stress conditions, reducing the spongy parenchyma and increasing palisade parenchyma thickness. The inverse occurred with GBU 68, while the remaining genotypes were unaltered. The results found in this study suggest that GBU 68 is the most drought-sensitive genotype and anatomical changes induced by intermittent drought are not enough to explain the physiological differences between genotypes. MenosTranspiration (E), diffusive resistance (rs) and anatomical parameters were measured in plants of four grafted umbu tree genotypes (GBUs 44, 48, 50 and 68) in order to evaluate alterations induced by intermittent drought and possible genotypic variations. Transpiration measurements were taken daily until stomatal closure by withholding water. Measurements were also taken, when the plants were re-watered and the watering was interrupted again. This cycle was repeated for a period of 31 days (stress period). The control plants were also irrigated daily. A regular pattern in the stomatal opening/closing mechanism was observed throughout the watering period, exhibiting intra-specific differences. Stomatal behavior of GBU 44 and GBU 68 were influenced by air temperature (Tar), relative humidity (RH) and vapor pressure deficit (VPD), whereas GBU 50 was influenced by photosynthetically active radiation (PAR). GBU 48 was not influenced by these environmental factors. Anatomical alterations in response to drought were observed in stomatal density (SD), reductions in the stomatal index (SI) and stomatal aperture size (SA). The anatomical features of the GBU 48 genotype remained unaltered. There was an inversion in tissue proportion in GBU 44 under stress conditions, reducing the spongy parenchyma and increasing palisade parenchyma thickness. The inverse occurred with GBU 68, while the remaining genotypes were unaltered. The results found in this study suggest that GBU 68 is the most d... Mostrar Tudo |
|
Palavras-Chave: |
Déficit hídrico; Densidade estomática; Diffusive resistance; Resistência difusiva; Stomatal density; Transpiração; Water deficit. |
|
Thesagro: |
Spondias Tuberosa; Umbu. |
|
Thesaurus Nal: |
Transpiration. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA-2010/42102/1/OPB2633.pdf
|
|
Marc: |
LEADER 02526naa a2200289 a 4500
001 1577924
005 2017-10-06
008 2009 bl uuuu u00u1 u #d
100 1 $aSILVA, E. C.
245 $aStomatal changes induced by intermittent drought in four umbu tree genotypes.$h[electronic resource]
260 $c2009
520 $aTranspiration (E), diffusive resistance (rs) and anatomical parameters were measured in plants of four grafted umbu tree genotypes (GBUs 44, 48, 50 and 68) in order to evaluate alterations induced by intermittent drought and possible genotypic variations. Transpiration measurements were taken daily until stomatal closure by withholding water. Measurements were also taken, when the plants were re-watered and the watering was interrupted again. This cycle was repeated for a period of 31 days (stress period). The control plants were also irrigated daily. A regular pattern in the stomatal opening/closing mechanism was observed throughout the watering period, exhibiting intra-specific differences. Stomatal behavior of GBU 44 and GBU 68 were influenced by air temperature (Tar), relative humidity (RH) and vapor pressure deficit (VPD), whereas GBU 50 was influenced by photosynthetically active radiation (PAR). GBU 48 was not influenced by these environmental factors. Anatomical alterations in response to drought were observed in stomatal density (SD), reductions in the stomatal index (SI) and stomatal aperture size (SA). The anatomical features of the GBU 48 genotype remained unaltered. There was an inversion in tissue proportion in GBU 44 under stress conditions, reducing the spongy parenchyma and increasing palisade parenchyma thickness. The inverse occurred with GBU 68, while the remaining genotypes were unaltered. The results found in this study suggest that GBU 68 is the most drought-sensitive genotype and anatomical changes induced by intermittent drought are not enough to explain the physiological differences between genotypes.
650 $aTranspiration
650 $aSpondias Tuberosa
650 $aUmbu
653 $aDéficit hídrico
653 $aDensidade estomática
653 $aDiffusive resistance
653 $aResistência difusiva
653 $aStomatal density
653 $aTranspiração
653 $aWater deficit
700 1 $aNOGUEIRA, R. J. M. C.
700 1 $aVALE, F. H. A.
700 1 $aARAUJO, F. P. de
700 1 $aPIMENTA, M. A.
773 $tBrazilian Journal of Plant Physiology, Campos dos Goytacazes$gv. 21, n. 1, p. 33-42, 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Semiárido (CPATSA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Cerrados. |
|
Data corrente: |
09/12/2019 |
|
Data da última atualização: |
09/12/2019 |
|
Tipo da produção científica: |
Resumo em Anais de Congresso |
|
Autoria: |
CARVALHO, R. V. de; OLIVEIRA, J. da S.; FALEIRO, F. G.; BARBIERI, N. da C.; LIMA, V. L. M.; GARLHADO, L. C. |
|
Afiliação: |
FABIO GELAPE FALEIRO, CPAC. |
|
Título: |
Uso de regulador vegetal para aumentar a germinação de sementes de cultivares de maracujazeiro azedo armazenadas por longo período em embalagens comerciais. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
In: SIMPÓSIO DE MELHORAMENTO DE PLANTAS, 2., 2018, Brasília, DF. O equilíbrio entre o passado e o futuro: resumos. Brasília, DF: Embrapa: UnB, 2018. |
|
Idioma: |
Português |
|
Palavras-Chave: |
Armazenamento de semente; Fisiologia de semente. |
|
Thesagro: |
Semente; Tratamento de Semente. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/206444/1/Uso-de-regulador-vegetal.pdf
|
|
Marc: |
LEADER 00829nam a2200205 a 4500
001 2116309
005 2019-12-09
008 2018 bl uuuu u00u1 u #d
100 1 $aCARVALHO, R. V. de
245 $aUso de regulador vegetal para aumentar a germinação de sementes de cultivares de maracujazeiro azedo armazenadas por longo período em embalagens comerciais.$h[electronic resource]
260 $aIn: SIMPÓSIO DE MELHORAMENTO DE PLANTAS, 2., 2018, Brasília, DF. O equilíbrio entre o passado e o futuro: resumos. Brasília, DF: Embrapa: UnB$c2018
650 $aSemente
650 $aTratamento de Semente
653 $aArmazenamento de semente
653 $aFisiologia de semente
700 1 $aOLIVEIRA, J. da S.
700 1 $aFALEIRO, F. G.
700 1 $aBARBIERI, N. da C.
700 1 $aLIMA, V. L. M.
700 1 $aGARLHADO, L. C.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Cerrados (CPAC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
