Performance of juice and wine grape cultivars in different training systems

Abstract The increase of rural tourism activities has led growers to use different grape cultivars for the production of wine and/or juice. Thus, the aim of this study was to evaluate the phytotechnical characteristics of grapevines and physicochemical characteristics of grape must obtained for Bordô, Isabel Precoce, BRS Violeta, Isabel and Concord cultivars in different training systems: vertical shoot position; Y-shaped trellis and V-shaped trellis with double spur cordon. The experimental design was randomized blocks for comparison of cultivars within each training system and analysis of the main components for productivity variables was carried out. BRS Violeta cultivar showed higher bunch weight values regardless of training system. Bordô cultivar showed lower yield values and soluble solids content in comparison to other cultivars. Isabel and Isabel Precoce cultivars in the evaluated training systems showed higher soluble solids content. Principal component analysis allowed verifying that in Y-shaped trellis and V-shaped trellis with double spur cordon training systems, cultivars were related to higher yield.

摘要
随着乡村旅游活动的持续增长，种植者开始选用不同的葡萄品种用于葡萄酒和/或果汁的生产。为此，本研究旨在评估不同栽培架式下，博尔多（Bordô）、早熟伊莎贝尔（Isabel Precoce）、BRS Violeta、伊莎贝尔（Isabel）以及康可（Concord）5个葡萄品种的葡萄植株栽培学特性，以及其所产葡萄醪（grape must）的理化特性。本研究涉及的栽培架式包括：垂直枝蔓定位架式（vertical shoot position）、Y形架以及双臂龙干V形架（V-shaped trellis with double spur cordon）。
实验采用随机区组设计，以比较各栽培架式内的品种差异，并针对产量相关性状开展主成分分析。结果表明：无论采用何种栽培架式，BRS Violeta品种的果穗重量均显著高于其余供试品种；博尔多品种的产量与可溶性固形物含量均低于其他供试品种；伊莎贝尔与早熟伊莎贝尔品种在本次评估的栽培架式中，可溶性固形物含量更高。主成分分析结果证实，在Y形架与双臂龙干V形架栽培架式下，供试品种与更高产量呈显著相关。