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Agronomy 2019, 9(4), 164; https://doi.org/10.3390/agronomy9040164

Anthocyanin Accumulation and Color Development of ‘Benitaka’ Table Grape Subjected to Exogenous Abscisic Acid Application at Different Timings of Ripening

1
Agricultural Research Center, Department of Agronomy, Londrina State University, Londrina, PR 86057-970, Brazil
2
Embrapa Grape and Wine, Tropical Station Unit., Bento Gonçalves, RS 95700-000, Brazil
*
Author to whom correspondence should be addressed.
Received: 14 January 2019 / Revised: 4 February 2019 / Accepted: 9 February 2019 / Published: 28 March 2019
(This article belongs to the Special Issue Viticulture and Winemaking under Climate Change)
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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. View Full-Text
Keywords: Vitis vinifera L.; production system; S-ABA; rate of anthocyanin accumulation; CIRG; bioactive compounds Vitis vinifera L.; production system; S-ABA; rate of anthocyanin accumulation; CIRG; bioactive compounds
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Shahab, M.; Roberto, S.R.; Ahmed, S.; Colombo, R.C.; Silvestre, J.P.; Koyama, R.; de Souza, R.T. Anthocyanin Accumulation and Color Development of ‘Benitaka’ Table Grape Subjected to Exogenous Abscisic Acid Application at Different Timings of Ripening. Agronomy 2019, 9, 164.

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