Uso de enraizadores sintéticos na propagação vegetativa de Justicia rubrobracteata.

Abstract

In an exploratory study of Botany in rocky outcrops in the state of Paraíba, Northeastern Brazil, a new species of Acanthaceae, Justicia rubrobracteata, was classified. The objective of this research was to investigate the influence of indolbutyric acid and naphthalene acetic acid growth regulators, in different concentrations, on the rooting of Justicia rubrobracteata, in addition to visually diagnosing the occurrence of pests and diseases. The research was carried out at the Federal University of Campina Grande, Education and Health Center in the municipality of Cuité - Paraíba, in a greenhouse from June 9, 2022 to August 18, 2022. The treatments were T1 - Control - Absence of growth regulators, T2 - 0.4% naphthalene acetic acid, T3 - 1% naphthalene acetic acid, T4 - 2% indolebutyric acid. The species was not responsive to the use of synthetic rooting agents in a significant way, as the control obtained results with similar and superior means even to the T4 treatment that used 2% indolbutyric acid. It is concluded that Justicia rubrobracteata does not need synthetic rooters for its vegetative propagation, both the root compartment and the aerial part of the species had satisfactory and proportional growth and visual occurrences of pests and diseases were not diagnosed in the species Justicia rubrobracteata.