Abstract
The purpose of this study was to develop a method to increase freezing tolerance of field-grown grapevines using foliar application of abscisic acid (ABA). The specific objectives were to evaluate the morphological and physiological changes of field-grown Vitis vinifera Cabernet franc grapevines in response to exogenous ABA application and to determine an optimum timing for foliar application of ABA that results in enhanced freezing tolerance. Cabernet franc grapevines grown at two locations were treated with 400 and 600 mg/L ABA at different stages of development corresponding to veraison and 20, 30, 40, and 55 days postveraison. ABA did not affect yield components or basic fruit chemical composition. However, it enhanced anthocyanin concentration, advanced dormancy, decreased bud water content, and ultimately increased freezing tolerance under simulated freezing events. The increased freezing tolerance by ABA was confirmed by assessing bud injury following natural freezing events of −19°C and −23°C in two locations. The effectiveness of ABA may have been enhanced by application timing, which was optimum at veraison and 20 to 30 days postveraison. Results suggest that ABA application has the capacity to enhance dormancy and increase freezing tolerance and can be used as a prophylactic tool to protect against winter injury of grape cultivars grown in cold regions.
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Claims 8
Claim · model-written summary
Foliar ABA did not affect yield components or basic fruit chemical composition of grapevines.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Treatment
- ABAe1
- Outcome
- yield components or basic fruit chemical compositione1
- Direction
- did not affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e1“ABA did not affect yield components or basic fruit chemical composition”
Claim · model-written summary
Foliar ABA enhanced anthocyanin concentration in grapevine fruit.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- 400 and 600 mg/L ABAe0
- Outcome
- anthocyanin concentratione2
- Direction
- enhancede2
- Setting
- two locationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e0“Cabernet franc grapevines grown at two locations were treated with 400 and 600 mg/L ABA”
e2“it enhanced anthocyanin concentration, advanced dormancy, decreased bud water content, and ultimately increased freezing tolerance under simulated freezing events”
Claim · model-written summary
Foliar ABA advanced dormancy of grapevines.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- 400 and 600 mg/L ABAe0
- Outcome
- dormancye2
- Direction
- advancede2
- Setting
- two locationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e0“Cabernet franc grapevines grown at two locations were treated with 400 and 600 mg/L ABA”
e2“it enhanced anthocyanin concentration, advanced dormancy, decreased bud water content, and ultimately increased freezing tolerance under simulated freezing events”
Claim · model-written summary
Foliar ABA decreased bud water content of grapevines.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- 400 and 600 mg/L ABAe0
- Outcome
- bud water contente2
- Direction
- decreasede2
- Setting
- two locationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e0“Cabernet franc grapevines grown at two locations were treated with 400 and 600 mg/L ABA”
e2“it enhanced anthocyanin concentration, advanced dormancy, decreased bud water content, and ultimately increased freezing tolerance under simulated freezing events”
Claim · model-written summary
Foliar ABA increased freezing tolerance of grapevines under simulated freezing events.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- 400 and 600 mg/L ABAe0
- Outcome
- freezing tolerancee2
- Direction
- increasede2
- Qualifier
- under simulated freezing eventse2
- Setting
- two locationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e0“Cabernet franc grapevines grown at two locations were treated with 400 and 600 mg/L ABA”
e2“it enhanced anthocyanin concentration, advanced dormancy, decreased bud water content, and ultimately increased freezing tolerance under simulated freezing events”
Claim · model-written summary
Foliar ABA increased freezing tolerance of grapevines after natural freezing events of −19°C and −23°C, assessed by bud injury.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- ABAe3
- Outcome
- freezing tolerancee3
- Direction
- increasede3
- Value
- −19°C and −23°Ce3
- Qualifier
- assessing bud injurye3
- Setting
- two locationse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e3“The increased freezing tolerance by ABA was confirmed by assessing bud injury following natural freezing events of −19°C and −23°C in two locations”
Claim · model-written summary
Application timing at veraison and 20 to 30 days postveraison may have enhanced the effectiveness of ABA on grapevines.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- application timinge4
- Outcome
- effectiveness of ABAe4
- Direction
- enhancede4
- Qualifier
- optimum at veraison and 20 to 30 days postveraisone4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e4“The effectiveness of ABA may have been enhanced by application timing, which was optimum at veraison and 20 to 30 days postveraison”
Claim · model-written summary
ABA application can be used as a prophylactic tool to protect grapevines against winter injury in cold regions.
- Taxon
- Vitis viniferaVitis viniferat0
- Treatment
- ABA applicatione5
- Outcome
- prophylactic tool to protect against winter injurye5
- Setting
- cold regionse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Field-Grown Vitis vinifera Cabernet franc Grapevines”
e5“Results suggest that ABA application has the capacity to enhance dormancy and increase freezing tolerance and can be used as a prophylactic tool to protect against winter injury of grape cultivars grown in cold regions”
The same questions in other papers
(+)-abscisic acid · tolerance: abiotic · Vitis vinifera (wine grape)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
(+)-abscisic acid · quality: general · Vitis vinifera (wine grape)Results agree
3 papers in the same direction as this paper
- no effect
- no effect
- no effect
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.