Canopy Management of Table Grapes Cultivar in Tropical Conditions

P. Leão, M. Lima
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引用次数: 2

Abstract

The production of some seedless table grapes under tropical conditions presents low bud fertility on the main canes and low yield, which leads to the need of pruning in the lateral shoots. The objective of this study was to evaluate the influence of the canopy management for the formation of lateral shoots associated with density of canes on the yield and quality of grapes “Sugraone” in the São Francisco Valley. The experiment was carried out over two growing seasons (2011-2012) in a commercial vineyard of Sugraone in Petrolina, Pernambuco state, Brazil. The treatments consisted of two canopy managements (shoot topping associated to elimination of lateral shoots and shoot topping and formation of lateral shoots) combined with two to three densities of canes after pruning (1.8, 2.8 and 3.8 canes/m). The formation of “lateral shoots” increased yield and number of clusters per plant during two consecutive growing seasons, besides using 2.8 varas/m resulted in highest yields only in 2011 growing season. The variables mass bunch, mass berry, soluble solids (SS), soluble sugar, titratable acidity (TA) and pulp firmness were not affected by treatments, while the attributes related to color, as like brightness and hue angle of the skin, and total extractable polyphenols content were influenced by canopy management, especially in the 2012 growing season. Shoot topping to induce formation of laterals shoots associated with density of 2.8 canes/m increased the yield of seedless grapes cultivar Sugraone grown in the São Francisco Valley, not significantly affecting the quality of the grape.
热带条件下鲜食葡萄品种的冠层管理
在热带条件下生产的一些无籽鲜食葡萄,主要表现为主藤芽育性低,产量低,需要对侧枝进行修剪。摘要本研究旨在评价奥弗朗西斯科谷葡萄“Sugraone”产量和品质在冠层管理下与甘蔗密度相关的侧枝形成的影响。该试验在巴西伯南布哥州Petrolina的Sugraone商业葡萄园进行了两个生长季节(2011-2012)。这些处理包括两种冠层管理(顶梢与消除侧枝和顶梢与形成侧枝),以及修剪后两到三种密度(1.8、2.8和3.8条/m)。在连续两个生长季节,“侧芽”的形成增加了单株的产量和簇数,2.8 varas/m的产量仅在2011年生长季节达到最高。果束质量、果实质量、可溶性固形物(SS)、可溶性糖、可滴定酸度(TA)和果肉硬度等指标不受处理的影响,而果皮亮度、色相角、总可提取多酚含量等与颜色有关的指标受冠层管理的影响,尤其是在2012年生长季。在奥弗朗西斯科谷种植的无核葡萄品种糖格罗内(Sugraone),在密度为2.8条/m的情况下,根尖打顶诱导侧枝形成的效果显著,但对葡萄品质影响不显著。
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