Abstract
Beyond climatic conditions, qualitative performance is led by the intrinsic characteristics of the genotype. The aim of this study was to investigate the relationship between vine water status and exogenous abscisic acid (ABA) application on berry composition of the cultivars Cannonau, Merlot and Sangiovese. The experiment, carried out in 2016 and 2017, consisted of comparing two levels of irrigation treatments, full irrigation versus a non-irrigation treatment. Within each treatment, two sub-treatments were set up: (i) 4 mL L−1 of exogenous ABA applied at veraison to clusters only and subsequently repeated after six days; (ii) a control (untreated vines). The application of different irrigation regimes confirmed that the response to water stress is highly cultivar-dependent. Berry composition was influenced differently among cultivars by water stress. In terms of metabolites, positive influences were observed with Cannonau. No significant effects were observed by spraying exogenous ABA directly on grapes. Moreover, no significant interactions were found between the application of water stress and ABA. Exogenous ABA application did not appear to be a viticultural practice capable of influencing must composition in environments characterized by severe environmental conditions such as heat and drought.
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Claims 5
Claim · model-written summary
Berry composition responded differently to water stress among the three grape cultivars.
Not reportedComparator
Verbatim
e0“Berry composition was influenced differently among cultivars by water stress.”
Claim · model-written summary
Water stress had positive effects on metabolites in Cannonau grapes.
Not reportedComparator
Verbatim
e0“In terms of metabolites, positive influences were observed with Cannonau.”
e1“The application of different irrigation regimes confirmed that the response to water stress is highly cultivar-dependent.”
Claim · model-written summary
Spraying exogenous ABA directly on grape clusters had no significant effect on berry composition.
- Taxon
- grapese0
- Treatment
- spraying exogenous ABA directly on grapese0
- Outcome
- berry compositione1
- Direction
- No significant effectse0
Not reportedComparator
Verbatim
e0“No significant effects were observed by spraying exogenous ABA directly on grapes.”
e1“The aim of this study was to investigate the relationship between vine water status and exogenous abscisic acid (ABA) application on berry composition of the cultivars Cannonau, Merlot and Sangiovese.”
Claim · model-written summary
No significant interaction between water stress and ABA application was detected for berry composition.
Verbatim
e0“no significant interactions were found between the application of water stress and ABA.”
e1“The aim of this study was to investigate the relationship between vine water status and exogenous abscisic acid (ABA) application on berry composition of the cultivars Cannonau, Merlot and Sangiovese.”
Claim · model-written summary
The authors conclude that exogenous ABA is unlikely to alter grape must composition in hot, dry environments.
- Treatment
- Exogenous ABA applicatione0
- Outcome
- must compositione0
- Qualifier
- environments characterized by severe environmental conditions such as heat and droughte0
Not reportedTaxon
Verbatim
e0“Exogenous ABA application did not appear to be a viticultural practice capable of influencing must composition in environments characterized by severe environmental conditions such as heat and drought.”
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