The influence of rootstock on vigor and bud fertility of ‘BRS Tainá’ grape in the São Francisco Valley

Pub Date : 2023-06-02 DOI:10.1590/0100-29452023103

Carlos Roberto Silva de Oliveira, F. G. D. Silva, Ezildo Francisco Felinto Filho, Antônio Francisco de Mendonça Junior, C. Ulisses, P. Leão

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Abstract

Abstract ‘BRS Tainá’ is a new seedless table grape cultivar developed and recommended for the Submedium of São Francisco Valley, the main producing and exporting region of table grapes in Brazil. The objective of this study was to evaluate the influence of rootstock on vigor, bud fertility, sucrose and total soluble carbohydrates content in leaves of ‘BRS Tainá’ vine cultivated in semi-arid environmental conditions in the Brazilian Northeast. The treatments were represented by eight rootstocks: ‘101-14 MgT’, ‘IAC 313’, ‘IAC 572’, ‘IAC 766’, ‘Paulsen 1103’, ‘Ramsey’, ‘SO4’ and ‘Teleki 5C’. The experimental design was in randomized blocks with four replications, in split plots, the production cycles were considered as plots, and eight rootstocks as subplots. The following variables were evaluated: pruning weight, stem diameter, number of lateral bunches, bud fertility, sucrose and total soluble carbohydrates content in leaves. The ‘BRS Tainá’ vine had moderate canopy vigor and 54% of bud fertility. The carbohydrate content and sucrose in the leaves did not differ among treatments during pruning. Therefore, it is possible that there is no effect of the rootstock on the initial vegetative growth of ‘BRS Tainá’ vines, which vigor and bud fertility remained stable in the initial production cycles.

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砧木对旧金山谷‘BRS tain’葡萄活力和芽育性的影响

“BRS tain”是一种新的无核鲜食葡萄品种，推荐用于巴西鲜食葡萄的主要产区圣弗朗西斯科谷亚培养基。本研究旨在评价砧木对巴西东北部半干旱环境条件下栽培的‘BRS tain’植株活力、芽育性、叶片蔗糖和总可溶性碳水化合物含量的影响。以‘101-14 MgT’、‘IAC 313’、‘IAC 572’、‘IAC 766’、‘Paulsen 1103’、‘Ramsey’、‘SO4’和‘Teleki 5C’8个砧木为代表。试验设计为4个重复，随机分组，以生产周期为小区，8根砧木为小区。评估了以下变量:剪枝重量、茎粗、侧束数、芽育性、叶片中蔗糖和总可溶性碳水化合物含量。‘BRS tain’植株的冠层活力中等，芽育率为54%。叶片中碳水化合物和蔗糖含量在修剪过程中无显著差异。因此，砧木对‘BRS tain’藤的初始营养生长可能没有影响，在初始生产周期中，其活力和芽力保持稳定。

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