Crescimento e resposta fisiológica de plantas de jambu (Acmella oleracea l.) estimuladas pelo ácido 5-aminolevulínico

Abstract

Jambu is a typical herb from the Amazon region, known for its culinary and medicinal properties. This work aims to analyze the growth and physiological responses of jambu plants (Acmella oleracea L.) stimulated by 5-aminolevulinic acid in production. In the experiment, 24 seedlings were selected (divided into three groups), on which 3 different analyzes were carried out. In the control treatment (T0) no dose of acid was applied. On the other hand, in the T50 treatment, ALA was applied in a proportion of 50 mg/ L⁻¹. In the treatment entitled T100, ALA was applied in a proportion of 100 mg/ L⁻¹. The data were subjected to analysis of variance using the F test, and when significant, the Tukey test was applied to compare treatment means at a 5% probability level. Plants treated with ALA showed greater height and number of leaves, in addition to a greater production of fresh and dry matter in both the aerial part and roots, compared to the control group. The application of ALA also resulted in improvements in photosynthesis, internal carbon concentration, stomatal conductance and leaf transpiration, positively impacting the photosynthetic efficiency and gas exchange of plants. The results indicated that the dosage of 50 mg/ L⁻¹ was the most effective among the variables analyzed. We can state that the study highlights the potential of 5-aminolevulinic acid as a promising agent to boost the growth and efficiency of jambu plants, contributing to the advancement of agriculture and scientific research.