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 | Acesso ao texto completo restrito à biblioteca da Embrapa Uva e Vinho. Para informações adicionais entre em contato com cnpuv.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
10/02/2006 |
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Data da última atualização: |
13/11/2019 |
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Autoria: |
VALLONE, R. C.; NIJENSOHN, L.; CAVAGNARO, J. B.; MERLO, E. E.; MAFFEI, J. A. |
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Título: |
Validation of a simple biological indicator of plant water status to determine irrigation timing of grapevines (Vitis vinifera, L). |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Acta Horticulturae, The Hague, n. 646, p. 77-89, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
The ability to manipulate wincgrape quality in response to scasonal water deficits through use of the rclative transpiration index (RTI) was evaluated during two consecutive years in container-grown Shiraz grapevines installed inside a commcrcial vineyard. The RTI (Relative Transpiration Index) assesses water loss from plants expcricncing water deficits relatíve to that from well watered controls and was used as an indicator of the plant water stress and for irrigation timing. The treatments were: TI: no stress, T2: moderatc stress from fruit set to veraíson (FV) and T3: moderate stress from veraíson to harvest (VH). Midday (LWPm) and predawn (LWPp) leaf water potential were also measured. The effects of the treatments on the yield components, vegetative and reproductívc growth and specific phenolic compounds of the berries were determined. There was no significant effect of the trcatmcnt during FV and moderate stress was rcachcd in T3 "ines during VII according to RTI and LWPp -críterla. In T2 and T3 the main shoots showed reduced growth due mainly to a reduction in node number, Shoot growth rate was rcduced by water deflcit by 20 and 30% during FV and VII periods respectivcly, In relation to TI, the pruning weight of T2 and T3 was 43.7% and 49.3% less. No significant differences among treatments were found in the yícld components but the weight loss in ripening berries was more evídcnt in T3. The number of cIusters initiated was not affectcd. No significant differcnces in polyphcnolic content was obscrved among treatmcnts, nor in dcgree of tannins polymerization ? Nevertheless, a relative incrcase in flavonol content was observcd during harvest 2000 due to the effcct of late rcstriction and in harvest 2001 a relative increase in anthocyanins, flavonols, proanthocyanidins and also in flavonol monomers due to modcrate stress during preveraison was obscrved, During the two scasons the RTI behaved as a sensitivo and accurate indicator of the plant water availahility and a sim pIe tool for irrigation timing. MenosThe ability to manipulate wincgrape quality in response to scasonal water deficits through use of the rclative transpiration index (RTI) was evaluated during two consecutive years in container-grown Shiraz grapevines installed inside a commcrcial vineyard. The RTI (Relative Transpiration Index) assesses water loss from plants expcricncing water deficits relatíve to that from well watered controls and was used as an indicator of the plant water stress and for irrigation timing. The treatments were: TI: no stress, T2: moderatc stress from fruit set to veraíson (FV) and T3: moderate stress from veraíson to harvest (VH). Midday (LWPm) and predawn (LWPp) leaf water potential were also measured. The effects of the treatments on the yield components, vegetative and reproductívc growth and specific phenolic compounds of the berries were determined. There was no significant effect of the trcatmcnt during FV and moderate stress was rcachcd in T3 "ines during VII according to RTI and LWPp -críterla. In T2 and T3 the main shoots showed reduced growth due mainly to a reduction in node number, Shoot growth rate was rcduced by water deflcit by 20 and 30% during FV and VII periods respectivcly, In relation to TI, the pruning weight of T2 and T3 was 43.7% and 49.3% less. No significant differences among treatments were found in the yícld components but the weight loss in ripening berries was more evídcnt in T3. The number of cIusters initiated was not affectcd. No significant differcnces in ... Mostrar Tudo |
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Palavras-Chave: |
Baga; Transpiração relativa. |
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Thesagro: |
Composto Fenólico; Crescimento; Irrigação; Uva; Viticultura. |
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Categoria do assunto: |
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Marc: |
LEADER 02802naa a2200253 a 4500
001 1540965
005 2019-11-13
008 2004 bl uuuu u00u1 u #d
100 1 $aVALLONE, R. C.
245 $aValidation of a simple biological indicator of plant water status to determine irrigation timing of grapevines (Vitis vinifera, L).$h[electronic resource]
260 $c2004
520 $aThe ability to manipulate wincgrape quality in response to scasonal water deficits through use of the rclative transpiration index (RTI) was evaluated during two consecutive years in container-grown Shiraz grapevines installed inside a commcrcial vineyard. The RTI (Relative Transpiration Index) assesses water loss from plants expcricncing water deficits relatíve to that from well watered controls and was used as an indicator of the plant water stress and for irrigation timing. The treatments were: TI: no stress, T2: moderatc stress from fruit set to veraíson (FV) and T3: moderate stress from veraíson to harvest (VH). Midday (LWPm) and predawn (LWPp) leaf water potential were also measured. The effects of the treatments on the yield components, vegetative and reproductívc growth and specific phenolic compounds of the berries were determined. There was no significant effect of the trcatmcnt during FV and moderate stress was rcachcd in T3 "ines during VII according to RTI and LWPp -críterla. In T2 and T3 the main shoots showed reduced growth due mainly to a reduction in node number, Shoot growth rate was rcduced by water deflcit by 20 and 30% during FV and VII periods respectivcly, In relation to TI, the pruning weight of T2 and T3 was 43.7% and 49.3% less. No significant differences among treatments were found in the yícld components but the weight loss in ripening berries was more evídcnt in T3. The number of cIusters initiated was not affectcd. No significant differcnces in polyphcnolic content was obscrved among treatmcnts, nor in dcgree of tannins polymerization ? Nevertheless, a relative incrcase in flavonol content was observcd during harvest 2000 due to the effcct of late rcstriction and in harvest 2001 a relative increase in anthocyanins, flavonols, proanthocyanidins and also in flavonol monomers due to modcrate stress during preveraison was obscrved, During the two scasons the RTI behaved as a sensitivo and accurate indicator of the plant water availahility and a sim pIe tool for irrigation timing.
650 $aComposto Fenólico
650 $aCrescimento
650 $aIrrigação
650 $aUva
650 $aViticultura
653 $aBaga
653 $aTranspiração relativa
700 1 $aNIJENSOHN, L.
700 1 $aCAVAGNARO, J. B.
700 1 $aMERLO, E. E.
700 1 $aMAFFEI, J. A.
773 $tActa Horticulturae, The Hague$gn. 646, p. 77-89, 2004.
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| 4227. |  | CARVALHO, P. E. R. Espécies arbóreas brasileiras. Brasília, DF: Embrapa Informação Tecnológica; Colombo: Embrapa Florestas, 2003-2014. 5 v. (Coleção espécies arbóreas brasileiras, v. 1-5). O v. 2 foi publicado em 2006. O v. 3 foi publicado em 2008. O v. 4 foi publicado em 2010. O v. 5 foi publicado em 2014.| Tipo: Autoria/Organização/Edição de Livros |
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