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Propaga??o vegetativa por miniestacas de preciosa (Aniba canellila (H. B.K) MEZ)

DOI: 10.1590/S0044-59672010000400007

Keywords: preciosa, auxin, juvenile material, minicutting.

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this study aimed to the rooting of minicuttings of juvenile material of preciosa (aniba canelilla (h.b.k) mez), through the use of concentrations of 0, 300 ppm, 600 ppm, 1200 ppm and 2000 ppm of acid indole-3-butirico (iba) in liquid form. the cuttings were obtained from seedlings of natural regeneration with approximately one years of age and shaped with 5 cm long and 0.4 - 0.6 mm in diameter. the experiment was conducted in a greenhouse, with intermittent mist system governed by 20 seconds to mist at intervals of 20 minutes. as substrate was used sand washed. weekly applications were made from fertilizer and foliar fungicide. the design used was completely randomized with five treatments and twenty-five repetitions, totaling 125 minicuttings. after 180 days after planting, the minicuttings were taken from the substrate and evaluated the following parameters: percentage of rooting, percentage of survival, percentage of calluses, dry weight of the sprouts, number, size and dry weight of roots. the results indicate that the rooting of minicuttings of juvenile material of preciosa independent of the use of the iba. however, the use of auxin in the concentration of 2000 ppm stimulated rooting (79.04%), survival (89.43%) and sprouted (64%) of minicuttings.


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