Adventitious rooting of cuttings of Varronia curassavica Jacq. with use of indol butyric acid

Abstract

This work studied the need for the use of exogenous auxinindole-butyl acid (IBA) on rooting cuttings of Varronia curassavica Jacq. The experiment was conducted in a greenhouse, with partial control of temperature and humidity in the experimental area of Horticultural sector of the Federal Institute of Education, Science and Technology (IFTM) in Uberaba, MG, Brazil. It has been evaluated the effects of different AIB doses in the rooting process of cuttings (0, 200, 400, 600, 800 e 1000 mg L-1), then planted in plastic tubes containing a mixture of sand and vermiculite in-house-vegetation. The experimental design was a randomized block with six quantitative treatments and four replications, totaling 24 experimental units. After 65 days, were evaluated the rooting by the survival rate of cuttings and statistical analysis was performed using regression analysis. The best dose of IBA hormone for rooting cuttings, for the largest number of sprouting, was 223 mg L-1, by adjusting the degree of model 2. For other doses, do not differ significantly from the control. It is concluded that can be carried out efficiently rooting of the Varronia curassavica Jacq. at a dose of 223 mg L-1 IBA, in semi controlled environmental conditions.