The objective of work was to evaluate the vegetative growth and yield of yellow passion fruit grafted on three rootstocks in area without description of premature death of plants. The experiment was carried in Adamantina, SP, Brazil, from April 2006 to June 2007, adopting the experimental design in randomized blocks in a 3 x 2 factorial scheme and an additional treatment, with four replicates. The studied factors were three rootstocks: Passiflora edulis, P. alata and P. gibertii, in two types of grafting, hypocotyledonary and conventional, by cleft grafting method and one additional treatment, no grafted. It was used the yellow passion fruit (Passiflora edulis Sims) as graft. The variables evaluated were: rootstocks and grafts stem diameter, internode length, secondary branches length, tertiary branches number, fruits number, fruits weight, aerial portion fresh and dry weight. It was observed that the three studied species can be used as rootstocks for the yellow passion fruit, with different levels of compatibility. The specie P. edulis demonstrated to greater compatibility as rootstock. Plants grafted on P. gibertii presented lower vigor, fruits with lower weight and lower yield. The hypocotyledonary grafting resulted bigger mass of fruits an greater yield in yellow passion fruit.
Passifloraceae; yellow passion fruit; graft; fructification