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The use of native plants enriches the landscape projects, conserves the local flora, creates a local identity and promotes the symbiosis between native fauna and flora. The objective of the present study was to evaluate the vegetative propagation of the native species Calibrachoa sellowiana , Tibouchina dubia and Verbena rigida , using cuttings submitted to different concentrations of indolebutyric acid (IBA), naphthaleneacetic acid (NAA) and substrates. From the stock plants, the cuttings were excised from the apex, with leaves number varying according to the species. In the propagation of Calibrachoa sellowiana, Tibouchina dubia and Verbena rigida under different concentrations of IBA, 4 treatments were carried out, consisting of IBA at concentrations of 0 mg L-1 (control), 500 mg L-1, 1000 mg L-1 and 2,000 mg L-1. In the propagation of Tibouchina dubia under different concentrations of NAA, the experiment was developed using four treatments, NAA was diluted in acetone + talc at concentrations of 0 mg L-1 (control), 2,000 mg L-1, 4,000 mg L-1 and 6,000 mg L-1. The evaluated variables for all the experiments were: percentage of rooted cuttings, number of roots per rooted cutting, average root length (cm) and number of shoots. In the substrate experiment, the treatments were sand, vermiculite, Plantmax® and mixture of soil + sand, for all the species from the previous experiments. Calibrachoa sellowiana and Verbena rigida, rooted with low concentration of IBA, 0 e 500 mg L-1, respectively, but the PGR was not essential to rooting phase, since the control also developed roots. For Tibouchina dubia the IBA and NAA did not promoted rooting. Calibrachoa sellowiana rooted better with soil + sand, differing from Verbena rigida , which rooted better with Plantmax®.

Propagation of native plants with ornamental potential from Serra do Oratório, Santa Catarina State, Brazil