Effect of alternative rooting inducers on Umbu-cajazeira

Abstract

The propagation by the sexual method of some species of the genus Spondias, such as the umbu-cajazeira, is practically unfeasible, due to the fact that its pit rarely contains seeds, making it necessary to propagate vegetatively by the cutting method. To enhance the rhizogenesis process, plant hormones are used, such as auxins, which results in the development of adventitious roots. In view of the above, the objective was to evaluate the effect of an alternative source of natural plant hormone on the rooting of tree cuttings Umbu-cajazeiraThe experiment was carried out in the fruit seedling nursery. The woody cuttings were removed from Umbu-cajazeira in vegetative rest. After collecting and preparing the cuttings, they were subjected to immersion in the solutions of AIB, ERT, ESL, AC and Water (evidence). After 90 days, the percentage of sprouted and rooted cuttings, number of leaves and shoots and roots, length and diameter of the largest shoot and largest root, dry mass of the root system and dry mass of shoots were evaluated. The data obtained were subjected to statistical analysis using the Tukey test at 5% probability. It was observed that the use of IBA provided 94% sprouting of the cuttings. The percentage of rooting of umbu-cajazeira cuttings was significant due to the use of alternative rooting inducers and indolebutyric acid, due to considerable amounts of auxins present in the extracts, inducing rhizogenesis in the cuttings. The AIB enhances the rooting and budding of umbu-cajazeira cuttings. The lentil extract is a natural plant hormone alternative for rooting umbu-cajazeira cuttings.