Rootstock effects on grape anthocyanins, skin and seed proanthocyanidins and wine color and phenolic compounds from Vitis vinifera L. Merlot grapevines

Abstract

BACKGROUND Rootstocks affect vegetative and reproductive parameters of the scion. However, limited knowledge exists on the effects of the adoption of a specific rootstock on grape and wine phenolic composition, which contribute to certain sensory attributes such as color, body and astringency of wine. These compounds are mainly affected by the variety, viticultural management and rootstock. The aim of this work was to study the influence of eight rootstocks on grape anthocyanin content, skin and seed proanthocyanidins and wine chromatic characteristics obtained from Merlot vines. RESULTS Grapevines grafted onto SO4 rootstock, in general, presented a higher concentration of total proanthocyanidins in skins and seeds compared to the rest of the rootstocks, whereas grapevines grafted onto Gravesac presented a lower concentration of proanthocyanidins in skins and seeds. These differences were found in the wines developed from grapevines grafted onto SO4. Wines from grapevines grafted onto SO4, 140 Ruggeri, Gravesac and 4453 M rootstocks presented, in general, better chromatic characteristics and a higher anthocyanin and tannin content than the rest of the samples. CONCLUSION This work gives additional information concerning the influence of rootstock on grape and wine phenolic composition. © 2018 Society of Chemical Industry

Rootstock-Mediated Effects on Cabernet Sauvignon Performance: Vine Growth, Berry Ripening, Flavonoids, and Aromatic Profiles

“…Contrarily, a recent study showed that ‘Merlot’ grafted onto SO4, 101-14, and 110R presented higher concentrations of proanthocyanidins in skins in one growing season. The differences in the rootstock effects on flavan-3-ols may be affected by scion cultivars and climatic differences, and further studies are necessary to understand this [31]. Notably, in this study, Ganzin 1 slightly reduced almost all the individual flavan-3-ol concentrations, indicating that Ganzin 1 tended to inhibit the accumulation of flavan-3-ols in grape skins.…”

“…In 2015, except for SO4, all the rootstocks showed slight positive effects on anthocyanin accumulation. Notably, ‘Merlot’ and ‘Shiraz’ grafted onto 110R both possessed higher concentrations of anthocyanins than ungrafted grapevines in the previous studies [31,32]. However, in 2016, anthocyanin concentrations were slightly reduced by rootstocks, except 5BB and 110R, which exhibited a negligible influence.…”

Quality and antioxidant potential of ‘BRS Magna’ grapes harvested in the first half of the year under different training systems and rootstocks in a tropical region

“…'IAC 572' and 'IAC 766' are considered vigorous rootstocks. Gutiérrez-Gamboa et al (2018) emphasizes that vigorous rootstocks give rise to a long vegetative cycle to the graft, delaying ripening. Results of this study suggest a faster ripening related to higher degradation of organic acids and higher accumulation of soluble solids in berries harvested from plants grafted on 'IAC 572'.…”

Physicochemical characteristics, phenolic profile, and antioxidant capacity, of Syrah tropical wines: Effects of vineyard management practices

“…These differences indicate that grape growing practices have a significant influence on wine phenolic composition, as suggested by Gutiérrez-Gamboa et al (2019). Other factors that can affect this parameter include climatic and processing conditions.…”