Effect of rootstocks on volatile composition of Merlot wines

Abstract

BackgroundScion physiology and grape quality are impacted by rootstock choice. There is little available information about the effects of rootstock on wine volatile composition, particularly when comparing grafted with own‐rooted grapevines. This field trial was aimed at studying the influence of rootstock choice on volatile composition of Merlot wines.ResultsWines made from grapes harvested from own‐rooted grapevines had the lowest content of (E)‐3‐hexenol, diethyl succinate and total ethyl esters and the highest content of 1‐pentanol, 1‐hexanol, (Z)‐3‐hexenol, diethyl malate and acetovanillone. Rootstocks such as 99R and 140Ru led to a higher content of total ethyl esters in wines followed by 110R, 1103P and Gravesac. According to odor activity values, Merlot wines were characterized by roses, sweat, cheese and banana aromas.ConclusionsThis work provides valuable information about the potential impact of rootstocks on wine volatile composition for Merlot wines. © 2020 Society of Chemical Industry

Strategies in vineyard establishment to face global warming in viticulture: a mini review

“…25 Rootstocks, varieties and clones Reductions in sugar accumulation and higher levels of acidity may be obtained using rootstocks, new varieties, or selecting genotypes capable of maintaining stem water potential under warm conditions, such as the isohydric grapevine varieties. 15,[72][73][74][75][76][77][78][79][80] Rootstocks may influence the grafted scion phenology, and droughttolerant rootstocks are expected to enable the scion to grow and yield when water supply is limited. [81][82][83] Some rootstocks induce earlier phenology and ripening, whereas others induce a longer cycle.…”

“…26,85 However, precise data about this effect are scarce in the scientific literature, and most of them are related to the edaphoclimatic planting conditions. 74,81 With respect to thermal stress in viticulture, rootstocks selection should be considered, since under these situations 110 Richter, 140-Ruggeri, and 1103 Paulsen are reported to be well adapted. 86 Plant material is one of the strategies with the greatest potential for modification of the reproductive cycle of the grapevine.…”

“…Rootstocks have a slight influence on phenology, and it is estimated that, between the latest and the earliest ones, there may be a delay of ripening of between 2 and 6 days 26,85 . However, precise data about this effect are scarce in the scientific literature, and most of them are related to the edaphoclimatic planting conditions 74,81 . With respect to thermal stress in viticulture, rootstocks selection should be considered, since under these situations 110 Richter, 140‐Ruggeri, and 1103 Paulsen are reported to be well adapted 86 …”

Effects of Rootstocks on Blade Nutritional Content of Two Minority Grapevine Varieties Cultivated under Hyper-Arid Conditions in Northern Chile

“…Chilean viticulture has been developed for centuries with ungrafted vineyards because there is no presence of phylloxera (Daktulosphaira vitifoliae) [16][17][18]. Due to this, there is limited local experience in the use of rootstocks in viticulture for wine grapes [16,[19][20][21][22]. However, during the last years, plant-parasitic nematodes have become a main productive constraint in the Chilean viticulture [23].…”

“…However, during the last years, plant-parasitic nematodes have become a main productive constraint in the Chilean viticulture [23]. Rootstock adoption in Chile is justified not only by the resistance against nematodes or the need to replace old or unproductive vineyards, but also by the need to overcome soil and water restraints, especially in the arid Northern Chile [16,19,21,24].…”