Abstract
The effects of abscisic acid (ABA) form, concentration, and application timing on bud cold hardiness, phenology, and fruiting performance of Merlot grapevines (Vitis vinifera) were evaluated in a three-year field trial with site locations in British Columbia and Ontario, Canada, and in Washington and Idaho, United States. Solutions containing natural S-ABA (ABA N ) and a purported long-lived ABA analogue 8'-acetylene ABA (ABA A ) at differing concentrations were applied to the vine canopy at veraison or post-harvest. Postharvest foliar applications of ABA N at concentrations greater than or equal to 5000 ppm tended to advance leaf abscission and increase autumn bud cold hardiness. Postharvest foliar applications of ABA A at 1000 ppm tended to delay budbreak in the spring following application and increase spring bud cold hardiness. Fruit yield and basic composition were affected little by the ABA treatments. Bud hardiness was enhanced by ABA N mostly in autumn and by ABA A mostly in the spring, indicating that the suitability of ABA forms for reducing bud damage would depend on when injurious cold events are more likely.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Postharvest foliar ABA N at 5000 ppm or more tended to advance leaf abscission.
- Taxon
- Vitis vinifera
Vitis viniferae0 - Material
- Merlote0
- Treatment
- Postharvest foliar applications of ABA N at concentrations greater than or equal to 5000 ppme1
- Outcome
- leaf abscissione1
- Direction
- advancee1
- Qualifier
- tended toe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merlot grapevines (Vitis vinifera)”
e1“Postharvest foliar applications of ABA N at concentrations greater than or equal to 5000 ppm tended to advance leaf abscission and increase autumn bud cold hardiness”
Claim · model-written summary
Postharvest foliar ABA N at 5000 ppm or more tended to increase autumn bud cold hardiness.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Merlote0
- Treatment
- Postharvest foliar applications of ABA N at concentrations greater than or equal to 5000 ppme1
- Outcome
- autumn bud cold hardinesse1
- Direction
- increasee1
- Qualifier
- tended toe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merlot grapevines (Vitis vinifera)”
e1“Postharvest foliar applications of ABA N at concentrations greater than or equal to 5000 ppm tended to advance leaf abscission and increase autumn bud cold hardiness”
Claim · model-written summary
Postharvest foliar ABA A at 1000 ppm tended to delay spring budbreak.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Merlote0
- Treatment
- Postharvest foliar applications of ABA A at 1000 ppme2
- Outcome
- budbreake2
- Direction
- delaye2
- Qualifier
- tended toe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merlot grapevines (Vitis vinifera)”
e2“Postharvest foliar applications of ABA A at 1000 ppm tended to delay budbreak in the spring following application and increase spring bud cold hardiness”
Claim · model-written summary
Postharvest foliar ABA A at 1000 ppm tended to increase spring bud cold hardiness.
- Taxon
- Vitis viniferaVitis viniferae0
- Material
- Merlote0
- Treatment
- Postharvest foliar applications of ABA A at 1000 ppme2
- Outcome
- spring bud cold hardinesse2
- Direction
- increasee2
- Qualifier
- tended toe2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merlot grapevines (Vitis vinifera)”
e2“Postharvest foliar applications of ABA A at 1000 ppm tended to delay budbreak in the spring following application and increase spring bud cold hardiness”
Claim · model-written summary
ABA treatments had little effect on fruit yield and basic composition.
- Taxon
- Vitis viniferaVitis viniferae0
- Treatment
- ABA treatmentse3
- Outcome
- Fruit yield and basic compositione3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Merlot grapevines (Vitis vinifera)”
e3“Fruit yield and basic composition were affected little by the ABA treatments”
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
application · tolerance: abiotic · Vitis vinifera (wine grape)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.