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O marmeleiro pertence à família Rosaceae. Atualmente, tem sido utilizado como porta-enxerto de pereira devido sua característica ananizante. O floroglucinol é um composto fenólico, potencializador da auxina. O presente trabalho foi conduzido em telado com nebulização intermitente e teve como objetivo avaliar a capacidade de enraizamento de estacas lenhosas de marmeleiro, tratadas com floroglucinol (zero, 1500 e 3000 mg.L-1), para indução de raízes. As cultivares testadas foram Pineapple, Meliform, Alongado, Radaelli, Portugal, Inta e MC. As estacas foram preparadas com 12 cm e ½ folha na parte superior, acondicionadas em caixas plásticas contendo vermiculita média. O delineamento utilizado foi o de blocos ao acaso, em arranjo fatorial (3 x 7), com 3 repetições e 5 estacas por parcela. As variáveis analisadas foram percentagem de enraizamento, número de raízes e percentagem de estacas brotadas. Observou-se que, independentemente da concentração testada, o floroglucinol não promoveu a indução do enraizamento de estacas lenhosas. A cultivar MC apresentou melhor percentagem de enraizamento, número de raízes e percentagem de estacas brotadas. The quince belongs from the family Rosaceae. Now, it has been used as rootstock tree door-graft because it induce dwarf plants. The floroglucinol is a phenolic compost, which effects is by increased the auxine and that tends to induce and to increase hardwoody cuttings. The present work was carried out in a greenhouse with intermittent mist writh the objective to determine the best quince cultivars in relation to its capacity of rooting hardwoody cuttings, and the best floroglucinol concentration for the root induction. The cultivars Pineapple, Meliform, Prolonged, Radaelli, Portugal, Inta and MC were used. They were submitted to three treatments of different floroglucinol concentrations (zero, 1500 and 3000 mg.L-1). The cuttings with 12 cm and ½ leaf in the superior part were conditioned in plastic boxes contends medium vermiculita. The experimental design used random blocks in the factorial arrangement (3 x 7), with 3 repetition and 5 cuttings for replication (15 cuttings for treatments). The analyzed variables were determination of the percentage of rooting, number of roots and percentage of cuttings shottings. It was observed that, independently of the tested concentration, the floroglucinol, did not induce the rooting of hardwoody cuttings of the cultivars tested. Cultivar MC presented better percentage of rooting, number of roots and percentage of shottings

ENRAIZAMENTO DE ESTACAS LENHOSAS DE CULTIVARES DE MARMELEIRO (Cydonia oblonga) TRATADAS COM FLOROGLUCINOL