Abstract
Effects of different deficit irrigation strategies on vine water status, canopy and cluster temperatures, fruit total phenolics, and the color of white table grapes (Vitis vinifera L., cv. Muscat of Alexandria) were compared to a well-irrigated control in 2004 from veraison to harvest at the Okayama University Experimental Vineyard, Japan. The treatments included: (1) well-irrigated control: re-irrigation when the soil moisture tension reached 15 kPa; (2) regulated deficit irrigation (RDI): re-irrigation 4 to 7 days after reaching a soil moisture tension of 15 kPa; (3) fixed partial root-zone wetting (FPRW): one part of the root system was re-irrigated when the soil moisture tension reached 15 kPa; and (4) alternate partial root-zone wetting (APRW): one part of the root system was re-irrigated when the soil moisture tension reached 15 kPa, and every week the irrigated part was switched. As the stress developed in RDI vines, leaf water potential and transpiration rate decreased and canopy and cluster temperatures increased as compared with the control. In contrast, both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control. At harvest, fruits from all treatments had higher skin total phenolics and CIELAB a＊ values than the control. RDI fruit had higher total soluble solids (TSS), a similar acidity, and smaller size compared with the control. FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control.
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Claims 18
Claim · model-written summary
RDI decreased leaf water potential and transpiration rate versus control.
- Taxon
- Vitis vinifera L.
Vitis viniferat0 - Treatment
- RDIe0
- Outcome
- leaf water potential and transpiration ratee0
- Direction
- decreasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the stress developed in RDI vines, leaf water potential and transpiration rate decreased and canopy and cluster temperatures increased as compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
RDI increased canopy and cluster temperatures versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- RDIe0
- Outcome
- canopy and cluster temperaturese0
- Direction
- increasede0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As the stress developed in RDI vines, leaf water potential and transpiration rate decreased and canopy and cluster temperatures increased as compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
FPRW maintained similar water potential and canopy and cluster temperatures versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- FPRWe0
- Outcome
- leaf water potential and canopy and cluster temperaturese0
- Direction
- similare0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
APRW maintained similar water potential and canopy and cluster temperatures versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- APRWe0
- Outcome
- leaf water potential and canopy and cluster temperaturese0
- Direction
- similare0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
FPRW lowered leaf transpiration versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- FPRWe0
- Outcome
- leaf transpiration ratee0
- Direction
- lesse0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
APRW lowered leaf transpiration versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- APRWe0
- Outcome
- leaf transpiration ratee0
- Direction
- lesse0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
RDI raised skin phenolics and CIELAB a＊ values versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- RDIe1
- Outcome
- skin total phenolics and CIELAB a＊ valuese0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits from all treatments had higher skin total phenolics and CIELAB a＊ values than the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
e1“As the stress developed in RDI vines, leaf water potential and transpiration rate decreased and canopy and cluster temperatures increased as compared with the control”
Claim · model-written summary
FPRW raised skin phenolics and CIELAB a＊ values versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- FPRWe1
- Outcome
- skin total phenolics and CIELAB a＊ valuese0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits from all treatments had higher skin total phenolics and CIELAB a＊ values than the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
e1“both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control”
Claim · model-written summary
APRW raised skin phenolics and CIELAB a＊ values versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- APRWe1
- Outcome
- skin total phenolics and CIELAB a＊ valuese0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits from all treatments had higher skin total phenolics and CIELAB a＊ values than the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
e1“both FPRW and APRW vines had similar leaf water potential and canopy and cluster temperatures, but less leaf transpiration rate as compared with the control”
Claim · model-written summary
RDI raised TSS versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- RDIe0
- Outcome
- total soluble solids (TSS)e0
- Direction
- highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI fruit had higher total soluble solids (TSS), a similar acidity, and smaller size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
RDI fruit had similar acidity versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- RDIe0
- Outcome
- aciditye0
- Direction
- similare0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI fruit had higher total soluble solids (TSS), a similar acidity, and smaller size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
RDI fruit was smaller than control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- RDIe0
- Outcome
- sizee0
- Direction
- smallere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDI fruit had higher total soluble solids (TSS), a similar acidity, and smaller size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
FPRW fruit had slightly higher TSS versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- FPRWe0
- Outcome
- TSSe0
- Direction
- slightly highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
APRW fruit had slightly higher TSS versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- APRWe0
- Outcome
- TSSe0
- Direction
- slightly highere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
FPRW fruit had lower acidity versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- FPRWe0
- Outcome
- aciditye0
- Direction
- lowere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
APRW fruit had lower acidity versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- APRWe0
- Outcome
- aciditye0
- Direction
- lowere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
FPRW fruit had similar size versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- FPRWe0
- Outcome
- sizee0
- Direction
- similare0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”
Claim · model-written summary
APRW fruit had similar size versus control.
- Taxon
- Vitis vinifera L.Vitis viniferat0
- Treatment
- APRWe0
- Outcome
- sizee0
- Direction
- similare0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FPRW and APRW fruits had slightly higher TSS, lower acidity, and a similar size compared with the control”
t0“white table grapes (Vitis vinifera L., cv. Muscat of Alexandria)”