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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
10/09/2014 |
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Data da última atualização: |
25/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVES, A. A. C.; SETTER, TIM L. |
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Afiliação: |
ALFREDO AUGUSTO CUNHA ALVES, CNPMF; TIM L. SETTER, Cornell University. |
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Título: |
Response of Cassava Leaf Area Expansion to Water Deficit: Cell Proliferation, Cell Expansion and Delayed Development. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Annals of Botany, n. 94, p. 605-613, 2014. |
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ISSN: |
0305-7364 |
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DOI: |
10.1093/aob/mch179 |
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Idioma: |
Inglês |
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Conteúdo: |
Background and Aims Cassava (Manihot esculenta) is an important food crop in the tropics that has a high growth rate in optimal conditions, but also performs well in drought-prone climates. The objectives of this work were to determine the effects of water deficit and rewatering on the rate of expansion of leaves at different developmental stages and to evaluate the extent to which decreases in cell proliferation, expansion, and delay in development are responsible for reduced growth. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Key Results Leaf expansion and development were nearly halted during stress but resumed vigorously after rewatering. In advanced-stage leaves (Group 1) in which development was solely by cell expansion, expansion resumed after rewatering, but not sufficiently for cell size to equal that of controls at maturity. In Group 2 (cell proliferation), relative expansion rate and cell proliferation were delayed until rewatering, but then recovered partially, so that loss of leaf area was due to decreased cell numbers per leaf. In Group 3 (early meristematic development) final leaf area was not affected by stress, but development was delayed by 4?6 d. On a plant basis, the proportion of loss of leaf area over 26 d attributed to leaves at each developmental stage was 29, 50 and 21 % in Group 1, 2 and 3, respectively. Conclusions Although cell growth processes were sensitive to mild water deficit, they recovered to a large extent, and much of the reduction in leaf area was caused by developmental delay and a reduction in cell division in the youngest, meristematic leaves. MenosBackground and Aims Cassava (Manihot esculenta) is an important food crop in the tropics that has a high growth rate in optimal conditions, but also performs well in drought-prone climates. The objectives of this work were to determine the effects of water deficit and rewatering on the rate of expansion of leaves at different developmental stages and to evaluate the extent to which decreases in cell proliferation, expansion, and delay in development are responsible for reduced growth. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Key Results Leaf expansion and development were nearly halted during stress but resumed vigorously after rewatering. In advanced-stage leaves (Group 1) in which development was solely by cell expansion, expansion resumed after rewatering, but not sufficiently for cell size to equal that of controls at maturity. In Group 2 (cell proliferation), relative expansion rate and cell proliferation were delayed until rewatering, but then recovered partially,... Mostrar Tudo |
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Thesagro: |
Irrigação; Mandioca; Manihot Esculenta; Seca. |
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Thesaurus Nal: |
Cassava; Plant-water relations. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02797naa a2200229 a 4500
001 1994756
005 2023-05-25
008 2014 bl uuuu u00u1 u #d
022 $a0305-7364
024 7 $a10.1093/aob/mch179$2DOI
100 1 $aALVES, A. A. C.
245 $aResponse of Cassava Leaf Area Expansion to Water Deficit$bCell Proliferation, Cell Expansion and Delayed Development.$h[electronic resource]
260 $c2014
520 $aBackground and Aims Cassava (Manihot esculenta) is an important food crop in the tropics that has a high growth rate in optimal conditions, but also performs well in drought-prone climates. The objectives of this work were to determine the effects of water deficit and rewatering on the rate of expansion of leaves at different developmental stages and to evaluate the extent to which decreases in cell proliferation, expansion, and delay in development are responsible for reduced growth. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Key Results Leaf expansion and development were nearly halted during stress but resumed vigorously after rewatering. In advanced-stage leaves (Group 1) in which development was solely by cell expansion, expansion resumed after rewatering, but not sufficiently for cell size to equal that of controls at maturity. In Group 2 (cell proliferation), relative expansion rate and cell proliferation were delayed until rewatering, but then recovered partially, so that loss of leaf area was due to decreased cell numbers per leaf. In Group 3 (early meristematic development) final leaf area was not affected by stress, but development was delayed by 4?6 d. On a plant basis, the proportion of loss of leaf area over 26 d attributed to leaves at each developmental stage was 29, 50 and 21 % in Group 1, 2 and 3, respectively. Conclusions Although cell growth processes were sensitive to mild water deficit, they recovered to a large extent, and much of the reduction in leaf area was caused by developmental delay and a reduction in cell division in the youngest, meristematic leaves.
650 $aCassava
650 $aPlant-water relations
650 $aIrrigação
650 $aMandioca
650 $aManihot Esculenta
650 $aSeca
700 1 $aSETTER, TIM L.
773 $tAnnals of Botany$gn. 94, p. 605-613, 2014.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido; Embrapa Uva e Vinho. |
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Data corrente: |
03/08/2009 |
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Data da última atualização: |
14/11/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
GOMES NETO, H.; SILVA, J. B. P. da; HALLWASS, F.; PEREIRA, G. E.; GUERRA, C. C. |
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Afiliação: |
Humberto Gomes Neto, UFPE; João Bosco Paraíso da Silva, UFPE; Fernando Halwass, UFPE; GIULIANO ELIAS PEREIRA, CNPUV; CELITO CRIVELLARO GUERRA, CNPUV. |
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Título: |
Metabolic profiles of Brazilian tropical wines determined by H NMR spectroscopy and chemometrics. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: SYMPOSIUM IN VINO ANALYTICA SCIENTIA, 6., 2009, Angers, França. Program and Abstracts... [S.l.]: Group ESA, 2009. |
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Páginas: |
p. 92. |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical wines are a new concept of vitiviniculture that is being developped principally in Brazi1. This new Brazilian frontier is located Northeast region in Pemambuco State, closed to the Equator line (between 8-9° latitude of the south hemisphere). Comparing these conditions with other Brazilian and worldwide vineyards, grapes present different characteristics, producing typical wines called "wines of sun", presenting differences between them according to the month of production. In this region it is possible to harvest grapes alI months in the year, and one vine produces two-three harest by year, depending of the cycle of each cultivar, and grapevines are irrigated by drip. This characteristic is due to the singularity of the hot climate and soils of this region, being the second great producer region of fine wines of Brazil, afier Rio Grande do Sul (Sollth of Brazil). |
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Palavras-Chave: |
Brasil; Espectroscopia; Perfil metabólico; Região tropical; Vitivinicultura; Wine. |
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Thesagro: |
Composição Química; Enologia; Vinho. |
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Thesaurus NAL: |
Grapes. |
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Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/204755/1/11494-2009-P.92.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/17463/1/Giuliano.pdf
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Marc: |
LEADER 01735nam a2200289 a 4500
001 1544076
005 2019-11-14
008 2009 bl uuuu u00u1 u #d
100 1 $aGOMES NETO, H.
245 $aMetabolic profiles of Brazilian tropical wines determined by H NMR spectroscopy and chemometrics.
260 $aIn: SYMPOSIUM IN VINO ANALYTICA SCIENTIA, 6., 2009, Angers, França. Program and Abstracts... [S.l.]: Group ESA$c2009
300 $ap. 92.
520 $aTropical wines are a new concept of vitiviniculture that is being developped principally in Brazi1. This new Brazilian frontier is located Northeast region in Pemambuco State, closed to the Equator line (between 8-9° latitude of the south hemisphere). Comparing these conditions with other Brazilian and worldwide vineyards, grapes present different characteristics, producing typical wines called "wines of sun", presenting differences between them according to the month of production. In this region it is possible to harvest grapes alI months in the year, and one vine produces two-three harest by year, depending of the cycle of each cultivar, and grapevines are irrigated by drip. This characteristic is due to the singularity of the hot climate and soils of this region, being the second great producer region of fine wines of Brazil, afier Rio Grande do Sul (Sollth of Brazil).
650 $aGrapes
650 $aComposição Química
650 $aEnologia
650 $aVinho
653 $aBrasil
653 $aEspectroscopia
653 $aPerfil metabólico
653 $aRegião tropical
653 $aVitivinicultura
653 $aWine
700 1 $aSILVA, J. B. P. da
700 1 $aHALLWASS, F.
700 1 $aPEREIRA, G. E.
700 1 $aGUERRA, C. C.
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Embrapa Uva e Vinho (CNPUV) |
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