Abstract
Table grape varieties do not reach commercially acceptable colour levels in some growing seasons in viticultural areas. This situation has led to the consideration of applications that can enhance grape coloration. The study examined the effects of abscisic acid on 'Spil Karası' grape clusters and berries at harvest time and after harvest. A single application of 400 mg L⁻¹ ABA was made during the veraison period to evaluate its effects on berry coloration and post-harvest quality. Cluster weight losses were measured on days 7 and 15, while titratable acidity (TA), Brix, and fruit and rachis colour analyses were conducted on days 15 and 30 after harvest. The research results indicated that the application of ABA (abscisic acid) was not effective in terms of the parameters examined during harvest time analyses. The weight loss due to ABA application on the 15th day was 1.1% higher compared to the control. The ABA treatment group exhibited higher Lightness (L) values compared to the control group 30 days after harvest. The control group recorded the lowest Hue values at the same time point. However, this group displayed a high Chroma value. Conversely, the ABA treatment group showed a low Chroma (C) value during the same analysis period. Also the lowest L values were determined in ABA treatment and control groups 30 days after harvest in rachis.
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Claims 8
Claim · model-written summary
ABA was ineffective for the examined harvest parameters.
- Taxon
- grapet0
- Treatment
- application of ABA (abscisic acid)e0
- Outcome
- parameters examinede0
- Direction
- not effectivee0
- Qualifier
- during harvest time analysese0
Not reportedComparator
Verbatim
e0“the application of ABA (abscisic acid) was not effective in terms of the parameters examined during harvest time analyses”
t0“grape”
Claim · model-written summary
ABA increased day-15 weight loss by 1.1% relative to control.
Verbatim
e0“The weight loss due to ABA application on the 15th day was 1.1% higher compared to the control.”
t0“grape”
Claim · model-written summary
ABA-treated grapes had higher Lightness at 30 days after harvest than controls.
Verbatim
e0“The ABA treatment group exhibited higher Lightness (L) values compared to the control group 30 days after harvest.”
t0“grape”
Claim · model-written summary
Controls had the lowest Hue at the same 30-day time point.
Verbatim
e0“The control group recorded the lowest Hue values at the same time point.”
t0“grape”
Claim · model-written summary
The control group had high Chroma.
Verbatim
e0“However, this group displayed a high Chroma value.”
t0“grape”
Claim · model-written summary
ABA-treated grapes had low Chroma during the same analysis period.
Verbatim
e0“Conversely, the ABA treatment group showed a low Chroma (C) value during the same analysis period.”
t0“grape”
Claim · model-written summary
ABA-treated rachises had the lowest L values 30 days after harvest.
Verbatim
e0“Also the lowest L values were determined in ABA treatment and control groups 30 days after harvest in rachis.”
t0“grape”
Claim · model-written summary
Control rachises had the lowest L values 30 days after harvest.
Verbatim
e0“Also the lowest L values were determined in ABA treatment and control groups 30 days after harvest in rachis.”
t0“grape”
The same questions in other papers
(+)-abscisic acid · quality: postharvest · VitisPositive and negative results
2 papers in the same direction as this paper · 12 in the opposite direction
- positive
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See all 15 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.