Climate, soil, and viticultural factors differentially affect the sub-regional variations in biochemical compositions of grape berries

文献类型： 外文期刊

第一作者： Wang, Haiqi

作者： Wang, Haiqi;Liu, Huaifeng;Wang, Haiqi;Yao, Xuenan;Liu, Menglong;Xu, Xiaobo;Wang, Yongjian;Kong, Junhua;Kuang, Yangfu;Fan, Peige;Liang, Zhenchang;Dai, Zhanwu;Yao, Xuenan;Liu, Menglong;Xu, Xiaobo;Wang, Yongjian;Kong, Junhua;Fan, Peige;Liang, Zhenchang;Dai, Zhanwu;Yao, Xuenan;Liu, Menglong;Xu, Xiaobo;Wang, Yongjian;Kong, Junhua;Kuang, Yangfu;Fan, Peige;Liang, Zhenchang;Dai, Zhanwu;Chen, Weiping;Xu, Zehua

作者机构：

关键词： Ningxia; Terroir; Grape quality; Stable carbon isotopes; Vitis vinifera L

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.2； 五年影响因子：4.6 ）

ISSN： 0304-4238

年卷期： 2025 年 339 卷

页码：

收录情况： SCI

摘要： Terroir leaves its influence on the flavor build-up in grape berries by triggering biochemical reactions that ultimately shape the typicality of the produced wines. However, the complex relationship between terroir, carbon stable isotopic composition, and the biochemical composition of grapes remains poorly understood. To fill these gaps, grape berries were harvested at maturity from two grape cultivars, Cabernet Sauvignon and Merlot ( Vitis vinifera L.), across 32 sites within the Eastern Foothills of the Helan Mountains region over two vintages. The climate and soil data for these sites were collected, and cultivation practices were surveyed. In parallel, the grape quality indicators were measured at maturity to explore their variations among sub-regions and the correlations between terroir factors and grape quality. Moreover, the carbon stable isotopes (delta 13C) were measured to evaluate the water status of vines at different sites. Results indicated that organic acids and anthocyanins exhibited a strong vintage effect, with the cooler vintage exhibiting higher levels of these compounds relative to the warmer vintage. Specifically, the Hongsipu sub-region, with a cooler climate, consistently demonstrated higher anthocyanin concentrations than other sub-regions in both vintages of the study. Further analysis revealed that the cultivar Cabernet Sauvignon displayed a higher ratio of di-hydroxylated to tri-hydroxylated anthocyanins in the cooler year, whereas Merlot exhibited the opposite trend. The Mantel test identified several critical factors influencing anthocyanin concentration, including total soil phosphorus (Tp), total soil potassium (Tk), soil thickness (Thickness), precipitation (April-September precipitation, Pre4-9), April-September average temperature (4-9 Tave), April-September active accumulated temperature (4-9 Aa), April-June active accumulated temperature (4-6 Aa), July-September active accumulated temperature (7-9 Aa), temperature diurnal range (May, July, August, September, DR-5 and DR 7-9), trellis system, vine density, and delta 13 C. Finally, structural equation modeling (SEM) was used to analyze and summarize the relationships between terroir factors, anthocyanin concentration, and delta 13 C. The results indicated that June and September precipitation had a positive impact on anthocyanin concentrations, while soil total potassium content had a negative impact. On the other hand, the July to September temperature diurnal range, trellis system, vine perimeter, and canopy height were the main drivers of delta 13 C, which further influenced grape anthocyanin concentrations. This research contributes to a scientific foundation for grape cultivation in the Eastern Foothills of the Helan Mountains and provides valuable insights for practices in other regions.

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