This work aimed to monthly evaluate the influence of seasons of the year on 'Hass' and 'Fortuna' avocado grafting, during twelve months. Plants from the Active Germplasm Bank of Universidade Estadual Paulista, Jaboticabal (SP), Brazil were studied. The experimental design used was completely randomized, in a factorial arrangement 2 x 12 ('Hass' and 'Fortuna' and the months) between March 2005 and February 2006, with 10 unities per plat, repeated four times. The evaluations, 90 days after the beginning of the experiment, were realated to the percentage, total development of the combinations (graft-scion), number of buds, diameters above, below and at the grafting. The most indicated season for grafting is, in general, between November and December for both avocado cultivars.
Persea americana Mill; cloning; propagation
