Gibberellic acid reduces clusters rot of ‘Sauvignon blanc’ grapes

Silva, Pricila Santos da; Kirinus, Marines Batalha Moreno; Barreto, Caroline Farias; Lamela, Carlos; Malgarim, Marcelo Barbosa; Mello-Farias, Paulo

doi:10.1590/0100-29452019486

Cited by 7 publications

(4 citation statements)

References 17 publications

(11 reference statements)

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“…Relative to the control, the 25 mg L −1 GA 3 treatment decreased CI-1 by 36.1% and 41.5% and CI-2 by 31.5% and 39.7% in 2019 and 2020 respectively, in accordance with previous studies. 2,28 Moreover, under standard management practices, we did not observe bunch rot in the GA 3 treatment groups in either year, although compact bunches are generally more susceptible to diseases.…”

Section: Grape Physicochemical Parametersmentioning

confidence: 58%

Modification of wine phenolic profiles by gibberellic acid application in ‘Cabernet Gernischt’ grapevines before anthesis

Song

Zhang

Gao³

et al. 2022

J Sci Food Agric

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BACKGROUND Vitis vinifera L. ‘Cabernet Gernischt’ grapes from the Yantai wine region of China usually form dense clusters and contain low phenolic content. We applied five concentrations (ranged from 5 to 25 mg L−1) of gibberellic acid (GA3) to ‘Cabernet Gernischt’ before anthesis to decrease cluster compactness in two consecutive vintages. Yield indices, grape maturity, and wine phenolic compounds were determined. RESULTS GA3 application significantly reduced cluster compactness, bunch weight, and yield per vine, but it did not significantly improve fruit ripening. The levels of total phenolics, total tannins, and total anthocyanins in wine were enhanced by GA3 application, with 10 and 15 mg L−1 GA3 treatments consistently producing a significant increase in the concentrations of mavidin, cyanidin, and their derivatives. Specifically, trans‐resveratrol was consistently significantly increased by 15 mg L−1 GA3 application. Principal component analysis of phenolic compounds demonstrated the differences among wines produced from GA3 treatment groups and the control. CONCLUSION Overall, wine phenolic profiles could be significantly modified by application of low concentrations of GA3 before anthesis. Application of high levels of GA3 is not recommended due to significant yield decrease. © 2022 Society of Chemical Industry.

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Section: Grape Physicochemical Parametersmentioning

confidence: 58%

Modification of wine phenolic profiles by gibberellic acid application in ‘Cabernet Gernischt’ grapevines before anthesis

Song

Zhang

Gao³

et al. 2022

J Sci Food Agric

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“…The effects of a GA 3 application vary depending on the grape cultivar, application dose and time, and the environmental conditions during the application. Earlier research revealed that a GA 3 treatment before flowering can significantly promote the elongation of grape inflorescences when the concentration exceeds 2 mg L −1 25 . Additionally, treatment with a high GA dose may result in the production of seedless and short wine grape berries 14 .…”

Section: Resultsmentioning

confidence: 99%

“…Earlier research revealed that a GA 3 treatment before flowering can significantly promote the elongation of grape inflorescences when the concentration exceeds 2 mg L −1 . 25 Additionally, treatment with a high GA dose may result in the production of seedless and short wine grape berries. 14 Moreover, the optimal GA 3 application time for elongating the stem to reduce cluster compactness is 3 weeks before the initiation of flowering.…”

Section: Effect Of the Gibberellin Application Before Flowering On Th...mentioning

confidence: 99%

Effects of gibberellin applications before flowering on the phenotype, ripening, and flavonoid compounds of Syrah grape berries

et al. 2022

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BACKGROUND Vitis vinifera L. cv. Syrah grapevines in most Chinese viticulture regions generally have compact clusters that increase the susceptibility to diseases and inhibit coloration of the inner berries. Gibberellic acid (GA3) is a plant growth regulator that is widely used during grape cultivation to elongate the rachis, control fruit set, and decrease cluster compactness. In this study, Syrah grapevines were treated with GA3 before flowering in 2019 and 2020 to determine the optimal GA3 treatment concentrations and times for decreasing bunch compactness, while minimizing the negative effects on the wine grape cluster weight. RESULTS Pre‐flowering GA3 applications at 3, 5, and 7 mg L−1, especially treatment at 20 days before flowering, decreased Syrah grape bunch compactness by decreasing the fruit set rate and promoting bunch elongation, with minimal adverse effects on the healthy grape cluster weight in both years. The 7 mg L−1 GA3 treatment at 20 days before flowering significantly increased reducing sugar, total phenolic, tannin, and total anthocyanin contents of Syrah grape berries in 2019 and 2020. Moreover, high‐performance liquid chromatography–electrospray ionization–tandem mass spectrometry, hierarchical cluster, and principal component analysis results indicated GA3 applications before flowering (3, 5, and 7 mg L−1) significantly affected the accumulation of different anthocyanins in Syrah grape berries. Notably, the application of 7 mg L−1 GA3 at 20 days before flowering resulted in the highest anthocyanin content. CONCLUSION Pre‐flowering gibberellin application can decrease bunch compactness and improve the quality of Syrah grape berries. These findings reflect the potential utility of gibberellin treatments for decreasing cluster compactness and increasing the quality of wine grapes. © 2022 Society of Chemical Industry.

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“…The results obtained in the present work differ from those of other authors, who studied the effect of gibberellic acid on the reduction of Botrytis bunch rot. In Southern Brazil, Silva et al (2019) concluded that spraying 2 to 8 ppm gibberellic acid at pre-flowering was efficient in controlling B. cinerea on 'Sauvignon Blanc'. Hed et al (2011), however, reported that the control of the fungus Botrytis sp.…”

Section: Resultsmentioning

confidence: 99%

Techniques to modify cluster architecture and their effect on the viticultural performance of the Sauvignon Blanc cultivar

Brighenti

Munhoz

Würz

et al. 2020

Pesq. agropec. bras.

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The objective of this work was to evaluate the effect of different techniques to modify grape cluster architecture on the incidence and severity of botrytis bunch rot, as well as on the viticultural performance of the 'Sauvignon Blanc' grapevine (Vitis vinifera). Associated with fungicides, four treatments were tested: control, 30 ppm gibberellic acid sprayed at full bloom, 1,000 ppm prohexadione calcium sprayed at full bloom, and berry thinning at the stage of beginning of berry touch. The experiment was carried out in the 2015, 2016, and 2017 vintages. Clusters were treated with fungicides during the stages of full bloom, beginning of berry touch, veraison, and around 15 days before harvest. Berry thinning does not cause losses in the yield and quality of 'Sauvignon Blanc', and, despite having little effect on cluster architecture, is effective in reducing the incidence and severity of Botrytis cinerea. Prohexadione calcium improves grape phenolic maturation, is effective in reducing the incidence and severity of B. cinerea, and reduces cluster compactness by decreasing berry diameter. The application of gibberellic acid spray at full bloom is not recommended because it decreases yield and bud fertility and increases berry susceptibility to B. cinerea infection.

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Gibberellic acid reduces clusters rot of ‘Sauvignon blanc’ grapes

Cited by 7 publications

References 17 publications

Modification of wine phenolic profiles by gibberellic acid application in ‘Cabernet Gernischt’ grapevines before anthesis

Modification of wine phenolic profiles by gibberellic acid application in ‘Cabernet Gernischt’ grapevines before anthesis

Effects of gibberellin applications before flowering on the phenotype, ripening, and flavonoid compounds of Syrah grape berries

Techniques to modify cluster architecture and their effect on the viticultural performance of the Sauvignon Blanc cultivar

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