Abstract
A better physiological and productive performance of cv. Montepulciano versus cv. Sangiovese under well-watered conditions has been recently assessed. The objective of this study was to verify that this behaviour is maintained when a pre-veraison deficit irrigation (vines held at 40% pot capacity from fruit-set to veraison) followed by re-watering (pot capacity reported at 90%). Single leaf assimilation rate and stomatal conductance, diurnal and seasonal whole-canopy net CO2 exchange (NCER) and water use efficiency were always higher in Sangiovese under deficit irrigation. Due to water shortage Montepulciano displayed a more compact growing habit due to decreased shoot and internode length. Sangiovese showed excellent recovery upon re-watering as NCER resulted to be higher than the pre-stress period; however, this might also relate to early and severe basal leaf yellowing and shedding. Early deficit irrigation affected xylem characteristics of Montepulciano more than in Sangiovese; vessel density increased (37 vs 29%, respectively, compared with well-watered vines) and the hydraulic conductance decreased more (-13 vs -3% respectively) compared with well-watered vines. Yield components and technological maturity were similar in the two cultivars, whereas Montepulciano grapes had lower anthocyanins and phenolics. Higher physiological and productive efficiency under non-limiting water conditions showed by Montepulciano compared with Sangiovese was basically reversed when both cultivars were subjected to an early deficit irrigation.
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Claims 11
Claim · model-written summary
Under deficit irrigation, Sangiovese had higher leaf assimilation, stomatal conductance and canopy net CO2 exchange than Montepulciano.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Material
- Sangiovesee0
- Treatment
- deficit irrigatione0
- Outcome
- Single leaf assimilation rate and stomatal conductance, diurnal and seasonal whole-canopy net CO2 exchange (NCER)e0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single leaf assimilation rate and stomatal conductance, diurnal and seasonal whole-canopy net CO2 exchange (NCER) and water use efficiency were always higher in Sangiovese under deficit irrigation”
t0“Vitis vinifera”
Claim · model-written summary
Under deficit irrigation, Sangiovese had higher water use efficiency.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Sangiovesee0
- Treatment
- deficit irrigatione0
- Outcome
- water use efficiencye0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water use efficiency were always higher in Sangiovese under deficit irrigation”
t0“Vitis vinifera”
Claim · model-written summary
Water shortage reduced Montepulciano shoot and internode length, giving a compact habit.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Montepulcianoe0
- Treatment
- water shortagee0
- Outcome
- shoot and internode lengthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Due to water shortage Montepulciano displayed a more compact growing habit due to decreased shoot and internode length”
t0“Vitis vinifera”
Claim · model-written summary
Following rewatering, Sangiovese canopy net exchange exceeded its prestress level.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Sangiovesee0
- Treatment
- re-wateringe0
- Outcome
- NCERe0
- Direction
- highere0
- Comparator
- pre-stress periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sangiovese showed excellent recovery upon re-watering as NCER resulted to be higher than the pre-stress period”
t0“Vitis vinifera”
Claim · model-written summary
Montepulciano vessel density increased 37% relative to well-watered vines under early deficit irrigation.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Montepulcianoe1
- Treatment
- Early deficit irrigatione1
- Outcome
- vessel densitye0
- Direction
- increasede0
- Value
- 37e0
- Comparator
- well-watered vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vessel density increased (37 vs 29%, respectively, compared with well-watered vines)”
e1“Early deficit irrigation affected xylem characteristics of Montepulciano more than in Sangiovese”
t0“Vitis vinifera”
Claim · model-written summary
Sangiovese vessel density increased 29% relative to well-watered vines under early deficit irrigation.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Sangiovesee1
- Treatment
- Early deficit irrigatione1
- Outcome
- vessel densitye0
- Direction
- increasede0
- Value
- 29%e0
- Comparator
- well-watered vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vessel density increased (37 vs 29%, respectively, compared with well-watered vines)”
e1“Early deficit irrigation affected xylem characteristics of Montepulciano more than in Sangiovese”
t0“Vitis vinifera”
Claim · model-written summary
Montepulciano hydraulic conductance fell 13% relative to well-watered vines.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Montepulcianoe1
- Treatment
- Early deficit irrigatione1
- Outcome
- hydraulic conductancee0
- Direction
- decreasede0
- Value
- -13e0
- Comparator
- well-watered vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hydraulic conductance decreased more (-13 vs -3% respectively) compared with well-watered vines”
e1“Early deficit irrigation affected xylem characteristics of Montepulciano more than in Sangiovese”
t0“Vitis vinifera”
Claim · model-written summary
Sangiovese hydraulic conductance fell 3% relative to well-watered vines.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Sangiovesee1
- Treatment
- Early deficit irrigatione1
- Outcome
- hydraulic conductancee0
- Direction
- decreasede0
- Value
- -3%e0
- Comparator
- well-watered vinese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hydraulic conductance decreased more (-13 vs -3% respectively) compared with well-watered vines”
e1“Early deficit irrigation affected xylem characteristics of Montepulciano more than in Sangiovese”
t0“Vitis vinifera”
Claim · model-written summary
Yield components and technological maturity were similar between cultivars.
- Taxon
- Vitis viniferaVitis viniferat0
- Outcome
- Yield components and technological maturitye0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield components and technological maturity were similar in the two cultivars”
t0“Vitis vinifera”
Claim · model-written summary
Montepulciano grapes had lower anthocyanins and phenolics.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Montepulcianoe0
- Organ / stage
- grapese0
- Outcome
- anthocyanins and phenolicse0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Montepulciano grapes had lower anthocyanins and phenolics”
t0“Vitis vinifera”
Claim · model-written summary
Montepulciano’s higher physiological and productive efficiency under ample water was reversed under early deficit irrigation.
- Taxon
- Vitis viniferaVitis viniferat0
- Material
- Montepulcianoe0
- Outcome
- physiological and productive efficiencye0
- Direction
- reversede0
- Comparator
- Sangiovesee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher physiological and productive efficiency under non-limiting water conditions showed by Montepulciano compared with Sangiovese was basically reversed when both cultivars were subjected to an early deficit irrigation”
t0“Vitis vinifera”
The same questions in other papers
irrigation · physiology: water · Vitis vinifera (wine grape)Positive and negative results
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See all 22 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.