Comportamento Da Cultivar Niágara Rosada Enxertada Sobre Diferentes Porta-Enxertos No Sul De Santa Catarina, Brasil

Abstract

RESUMO A videira ‘Niagara Rosada’ é a principal cultivar de uva de mesa plantada no Sul do Brasil. Para avaliar a qualidade da uva produzida, foi conduzido um experimento com aNiagara Rosada nos seguintes porta-enxertos: ‘Jales’, ‘Tropical’, ‘Campinas’, ‘VR 043-43’, ‘R-99’, ‘Paulsen 1103’, ‘Schwarzmann’,‘Traviú’, ‘Golias’, ‘Gravesac’, ‘RR 101-14’, ‘Dog Ridge’, ‘VR 044-4’, ‘Kobber5BB’ e ‘SO4’, mais o pé-franco. Foram avaliados a fenologia, o vigor, a sobrevivência das plantas ea produção (produtividade, tamanho do cacho e número de cachos por planta). Os diferentes porta-enxertos não influenciam na fenologia da planta. O maior vigor foi observado para o ‘Dog Ridge’, seguido do‘Campinas’, ‘Paulsen 1103’ e ‘VR 043-43’. As maiores mortalidades de planta ocorreram para pé-franco (56%), ‘Traviú’ (50%) e ‘Schwarzmann’(41%). Os porta-enxertos ‘Paulsen 1103’, ‘Campinas’ e ‘Golias’, além de altaprodutividade, apresentam cachos maiores e mais compactos.

Shoot topping of ‘Niagara Rosada’ grapevine grafted onto different rootstocks

“…The 'IAC 572' rootstock is considered to be more vigorous than the 'IAC 766' (Maia and Camargo, 2012), yet it was found a higher amount of mass and wider clusters on the 'Niagara Rosada' grapevines grafted on the 'IAC 766', as well as a higher amount of mass on berries that were also longer and wider. These results are similar to those observed by Bruna and Back (2015) when studying the effect of these same rootstocks on the physical characteristics of 'Niagara Rosada' grapes. On the other hand, other authors present a higher amount of mass on clusters from 'Niagara Rosada' grapes grafted on 'IAC 572' rootstock compared to those grafted on 'IAC 766' (Alvarenga et al, 2002).…”

“…The difference in vigor between rootstocks had no significant influence over the number of clusters, yield and grapevines productivity, as it was observed in other studies (Alvarenga et al, 2002;Tecchio et al, 2014;Bruna and Back, 2015). The highest vigor from 'IAC 572' rootstocks when compared to 'IAC 766' favors the production of 'Niagara Rosada' (Mota et al, 2009).…”

“…The agronomic and physiological characteristics of grapevines, such as yield, vigor, size of clusters and berries, sugar and fruits acidity content and other important compounds for their quality can also be influenced by rootstocks (Dias et al, 2012;Pozzan et al, 2012;Bruna and Back, 2015). The choice of rootstock in viticulture depends on the soil conditions of each producing region and, within a region, it can undergo many variations.…”

“…Several studies have been carried out aiming to assess the 'Niagara Rosada' grapevines on different rootstocks, making its influence over vegetative growth, productivity, plants nutritional aspects and the clusters characteristics very clear (Alvarenga et al, 2002;Mota et al, 2009;Tecchio et al, 2011;Bruna and Back, 2015). However, there are few studies on the effect of rootstocks on phenolic compounds content and grapes antioxidant activity.…”

“…Adequate vigor, without excessing or lacking productivity, must be seek by adopting suitable production techniques for each combination, such as pruning, green pruning and special winter pruning with a higher number of buds on more vigorous plants (Alvarenga et al, 2002;Bruna and Back, 2015).…”