ENRAIZAMENTO DE ESTACAS DE SARITÉIA

Abstract

The Saritéia (Saritaea magnifica) is one of the most widely used flowering vines in the world, especially in tropical regions. It has showy lilac flowers that bloom all year round and is a vigorous plant that makes for beautiful compositions on pergolas and arbors. The species is propagated mainly by cuttings. We therefore set out to evaluate the rooting of Saritéia stem cuttings as a function of different growth regulators. Experiment 1 evaluated different doses of indole-butyric acid (AIB) on the rooting of the species, in which the treatments consisted of: T0 = control; T1= 1000 mg L-1 AIB; T2= 2000 mg L-1 AIB; and T3= 3000 mg L-1 AIB. Experiment 2 evaluated the rooting of cuttings under different growth regulators. The treatments consisted of: T0= control; T1= 3000 mg L-1 of AIB; T2= 3000 mg L-1 of gibberellic acid (GA3); T3= 1500 mg-1 of AIB + 1500 mg-1 of gibberellic acid; T4= 100 ml L-1 of seaweed extract (EA); T5= 1.5 ml L-1 of seaweed extract (EA) + Co, Mo and Ni. The number of roots (NR), the length of the largest root (CMR), the number of leaf buds (NBF) and the survival rate (TS, %) were evaluated. In experiment 1, it was noted that the use of indole-butyric acid (AIB) promoted an increase in the formation of adventitious roots and the number of leaf sprouts in Saritaea magnifica cuttings as the dose of AIB increased, thus observing a linear behavior. For experiment 2, the product composed of algae extract (EA) + Co, Mo and Ni (UP! Seeds) provided greater rooting, as well as greater root formation.