Abstract
In colored table grapes, the anthocyanin contents are inhibited by the high temperature during ripening and berries suffer a lack of skin color, thus affecting their market value. In order to overcome this issue, a research study was planned to evaluate the influence of (S)-cis-abscisic acid (S-ABA) on rates of anthocyanin accumulation in table grapes when applied at different timings of ripening, and to quantify the gradual increase of berry color. The study was conducted in a commercial vineyard of ‘Benitaka’ table grapes (Vitis vinifera L.), grown under double annual cropping system in a subtropical area. The trials were carried out during two consecutive seasons (i.e., summer season of 2015 and off-season of 2016). The treatments used for the experiments contained 400 mg L−1 S-ABA applied at different timings of veraison (the onset of ripening), as follows: control (with no application); at pre-veraison (PRV); at veraison (V); and at post-veraison (POV). For all S-ABA treatments, a second application was performed 10 days after the first application. Berries were analyzed for weekly and daily anthocyanin accumulations, weekly and daily color index development (CIRG), total soluble solids (TSS) content, titratable acidity (TA), and maturation index (TSS/TA). Grapes subjected to exogenous application of S-ABA at any time of veraison, especially at PRV or at V, significantly increased the anthocyanin accumulation as well as berry color index development. Other chemical properties of grapes (i.e., TSS, TA, and TSS/TA evolution) were not affected by the use of S-ABA and followed a predictable pattern in relation to days of berries ripening.
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Claims 3
Claim · model-written summary
S-ABA application at any veraison timing, particularly pre-veraison or veraison, significantly increased berry anthocyanin accumulation.
- Taxon
- Grapese0
- Treatment
- exogenous application of S-ABAe0
- Outcome
- anthocyanin accumulatione0
- Direction
- increasede0
- Qualifier
- especially at PRV or at Ve0
Not reportedComparator
Verbatim
e0“Grapes subjected to exogenous application of S-ABA at any time of veraison, especially at PRV or at V, significantly increased the anthocyanin accumulation as well as berry color index development.”
Claim · model-written summary
S-ABA application at any veraison timing, particularly pre-veraison or veraison, significantly increased berry color index development.
- Taxon
- Grapese0
- Treatment
- exogenous application of S-ABAe0
- Outcome
- berry color index developmente0
- Direction
- increasede0
- Qualifier
- especially at PRV or at Ve0
Not reportedComparator
Verbatim
e0“Grapes subjected to exogenous application of S-ABA at any time of veraison, especially at PRV or at V, significantly increased the anthocyanin accumulation as well as berry color index development.”
Claim · model-written summary
S-ABA did not affect TSS, TA, or TSS/TA evolution during berry ripening.
Not reportedComparator
Verbatim
e0“Other chemical properties of grapes (i.e., TSS, TA, and TSS/TA evolution) were not affected by the use of S-ABA and followed a predictable pattern in relation to days of berries ripening.”
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