Produção e qualidade de frutos de clones de videira 'Concord' sobre diferentes porta-enxertos

Abstract

Dentre as tradicionais cultivares utilizadas na elaboração de suco de uva, a 'Concord' tem se destacado pelo bom aroma e sabor que confere ao suco. Este trabalho objetivou avaliar a produção e qualidade dos frutos de seis clones de videira 'Concord'('22', '28', '49', '202', '211'e '225'), sobre três portaenxertos ('IAC 766', 'IAC 572' e '420-A'). O experimento foi realizado em Rolândia (PR), em esquema fatorial 6x3 (clones x porta-enxertos), em delineamento inteiramente casualizado, com cinco repetições e parcelas subdivididas em duas safras (2009/2010 e 2010/2011). As plantas foram conduzidas em sistema de pérgula, no espaçamento de 4,0 m x 2,0 m. O clone '22' sobre o 'IAC 766' destacou-se com médias superiores de produção, produtividade e número de cachos por planta, bem como menor acidez titulável (AT). O clone '211' sobre o 'IAC 572' apresentou menor AT e médias superiores para número de cachos por planta, teor de sólidos solúveis (SS) e relação SS/AT. O porta-enxerto '420-A' proporcionou aos clones de 'Concord' maiores teores de SS e maior relação SS/AT.

Yield performance of new juice grape varieties grafted onto different rootstocks under tropical conditions

“…Compared with 'IAC 572', 'IAC 766' provided lower pH and higher contents of soluble solids and titratable acidity for the grapes. In contrast to the results found in this study, 'IAC 766' and 'IAC 572' did not differ in affecting chemical attributes (pH, SS, TA and SS/ TA) of Concord grapes (Borges et al, 2014). Thus, the performance of rootstocks is not always uniform, and rootstocks must be tested for each cultivar and location.…”

“…'IAC 766' favored increases in mass, length, and width of bunches and berries, compared with those in 'IAC 572' (Table 2). Borges et al (2014) did not observe significant differences between 'IAC 766' and 'IAC 572' for number of bunches per vine and bunch mass for the 'Concord' variety, which indicates that different varieties respond differently to the use of the same rootstocks. In varieties of V. vinifera table grapes, the number of berries per bunch, berry diameter, berry mass and rachis mass showed great variability using the same rootstocks (Ibacache et al, 2016).The level of vigor conferred by different rootstocks to scions may be a fundamental factor in changing the physical attributes of grapes (Bascunán-Godoy et al, 2017).…”

Performance of juice and wine grape cultivars in different training systems

“…For Isabel Precoce, Isabel and Concord cultivars, intermediate bunch fresh weight values were obtained, ranging from 126 to 148.4g. Bunch fresh weight were similar to those reported in literature for Isabel cultivar (SANTOS et al, 2011;SATO et al, 2009;RIZZON and MIELE, 2006) and higher than those found for Concord cultivar (ANZANELLO et al, 2008;BORGES et al, 2014).…”

“…BRS Violeta cultivar showed high productivity in the CD system because it compensates the low number of bunches produced by vines by the greater bunch fresh weight. Yield values for 'Concord' observed in this study were higher than those reported by Borges et al (2014) for vines trained in pergola (10.9 t ha -1 ) in Rolândia -PR.…”

“…In the CD training system, no statistical difference was observed between Isabel Precoce and Isabel cultivars, which presented the highest soluble solids content, respectively 17.7 and 17.6 °Brix, while for BRS Violeta and Concord cultivars, which did not show averages differing statistically, values were 16.5 and 16.7 °Brix. For training systems with higher number of bunches, Borges et al (2014) observed soluble solids content of 12.4 °Brix for Concord cultivar in pergola; Ribeiro et al (2012) of 21.0 °Brix for Isabel Precoce cultivar in trellis system and Sato et al, (2009) 16.7 °Brix for Isabel cultivar in the Geneva Double Curtain system. Values obtained by Ribeiro et al (2012) were higher because vines were cultivated in Petrolina-PE, where water and thermal conditions, favor the accumulation of sugars in grapes.…”