Training systems and rootstocks on yield and agronomic performance of ‘Syrah’ grapevine in the Brazilian semiarid

Abstract

The Vale do São Francisco stands out among the main Brazilian wine regions, and ‘Syrah’ is a grape cultivar very important to produce red wines. The objective of this study was to evaluate the influence of training systems and rootstocks on the yield and other agronomic variables of ‘Syrah’ grapevines during eight consecutive harvests in the tropical semiarid environment in the Vale do São Francisco. An experiment was carried out in Petrolina, state of Pernambuco, with ‘Syrah’ trained to lyre and espalier systems and grafted on IAC 572, IAC 766, IAC 313, SO4, 1103 Paulsen and Harmony rootstocks. A randomized block design with four replicates and split plots was used. There was a significant interaction between the training system and rootstock for yield, number of clusters and foliar mass. The lyre system increased yield, cluster number and Ravaz index, favoring the development of more balanced grapevines. The IAC 572 rootstock promoted greater vigor by reducing yield, cluster number, bud fertility and Ravaz index. The other rootstocks were similar to each other in most variables. Net photosynthesis, stomatal conductance and instantaneous efficiency of water use were not influenced by the training system and the rootstock. The results obtained evidenced the influence of the training system associated to the rootstock on agronomic variable and yield of ‘Syrah’, recommending lyre training and grafting on 1103 Paulsen or IAC 313 in the semi-arid tropical conditions of the Vale do São Francisco.

Trellis systems and rootstocks affect the quality and antioxidant potential of ‘BRS Cora’ grapes in rainy seasons under semiarid conditions

“…Along with this, other factors, such as water and nutrient absorption, benefit from a more effective root system distribution, derived from the use of certain rootstocks, which may regulate plant growth and crop yield (Jin et al 2016). The 'IAC 766' , which is less vigorous than 'IAC 572' ( Leão and Chaves 2019), may allow greater water and nutrient absorption, thus increasing the berry weight of 'BRS Cora' grapes regardless of the trellis system adopted. Berry resistance to compression was affected by the trellis systems, and berries from grapevines trained to lyre and VSP showed the lowest resistance to compression: 9.35 and 9.39 N, respectively (Table 2).…”

Influence of the rootstock variety on the vegetative and uvological measures of grapes

“…As a result of research was found of resistance to phylloxera and nematodes, and also had a strong effect on rootstocks affect the compatibility of grafted components [2], the adaptation of the cultigen to environment, is highly topical issue in a changing climate. The different ability of rootstocks to absorb nutritional chemicals and moisture [3], xerophytism and salt resistance [4] are reflected in the vegetative growth of the grape bush and the accumulation of biomass [5], the passage of phenological phases of growing [6,7], yield [8,9], the nutrient content in plants organs [10 -12]. Depending on the variety of rootstock, changes the chemical composition of berries (acidity, sugar degree, content of phenolic substances, etc.)…”