Effect of rootstock on cluster quality of 'Niagara Rosada' table grape

The aim of this paper was to evaluate the cluster quality of 'Niagara Rosad a' table grape (Vitis labrusca L.) grafted on different rootstocks and eval uated during seven crops, at Taubate, SP, Brazil. The clusters harvested in plants grafted with 'IAC 313', 'IAC 766' and 'Traviu' presented size (leng th and width), mass and number of berries significantly higher than those v erified in plants grafted with 'Kober 5BB' and 'Schwarzmann'. The berry pre sented mass significantly higher in the 'IAC 766' and 'Traviu' if compared to the 'Schwarzmann'. Fruit soluble solid content was higher in 'Kober 5BB' (15.46 degrees Brix) and 'Schwarzmann' (15.28 degrees Brix) if compared to the 'IAC 313' (14.18 degrees Brix).