Efeito de diferentes concentrações de Ácido 3-Indol-Butírico (IBA) e Ácido Naftaleno Acético(NAA) na indução de raízes em estacas caulinares de warburgia salutaris (Bertol. f.) chiov. usando solo da reserva florestal de licuáti

Abstract

The present work aimed to evaluate the effect of different concentrations of 3-Indol-Butyric Acid (IBA) and Naphthalene Acetic Acid (NAA) in the induction of roots in stem cuttings of Warburgia salutaris (Bertol. F.) Chiov. using soil from the Licuáti Forest Reserve as the main substrate. The experiment consisted of two treatments, the first using soil from the Licuáti Forest Reserve and the second using soil from the surroundings of the DCB greenhouse. 210 cuttings were collected from the apical branches of the mother plant, 105 cuttings being used for each treatment. In each treatment, 15 cuttings were immersed for 3 to 5 seconds in the following concentrations of IBA and NAA (0; 2,500; 5,000 and 10,000 mg / l), where 0 mg / l corresponded to the control treatment and were then placed in vases containing the respective soil. At the end of the experiment, it was concluded that the different concentrations of IBA and NAA used in the present work did not promote the rooting of Warburgia salutaris cuttings. In the rooting substrate using soil from the Licuáti Forest Reserve, the control and IBA treatments at 5,000 mg / l were the ones that promoted the highest percentage of survival, 33.3% and 6.7% respectively and in the rooting substrate using soil from the Greenhouse Surroundings. treatments with IBA at 2,500 mg / l and control were those that promoted the highest rooting percentage, 20% and 13.3% respectively. The concentration of IBA at 2,500 mg / l promoted the highest average number of shoots per treatment in the substrate using soil from the Licuáti Forest Reserve and in the rooting substrate using soil from the surroundings of the greenhouse, there was a higher average number of shoots per treatment, in the control treatment and NAA at 2,500 mg / l