Despite the advances on minicutting techniques for clonal silviculture, little progress has been made considering recalcitrant species, especially for the handling in minicuttings practices. The objective was to evaluate the influence of the architecture of minicuttings in the production of four clones of Eucalyptus seedlings. Evaluations in the three phases of seedlings production were performed: 1) Survival at 30 days in the greenhouse; 2) Rooting at 45 days in the shade house; and 3) Final exploitation at 60 days in the rustication area. The rooting rates was calculated based on the surviving rates at 30 days. The experimental design was randomized blocks with treatment in a factorial scheme 3 x 4, with three types of minicutting architecture: 1) whole leaf (100%); 2) cut leaf (50%); and 3) minicutting in the form of a "christmas tree" (sub apical leaves cut in ¾ and basal leaves left uncut) and four clones of Eucalyptus (E. dunnii, E. saligna), and two clones of E. urophylla x E. globulus. We used 100 plants per block with four replications. The results have shown that the production of seedlings was affected by the type of architecture adopted in the minicuttings. The architecture that showed the best results in the evaluations were "christmas tree" and whole leaf.
Nursery; Cloning; Rooting
