Adventitious rooting of mini-cuttings of Amburana cearensis, a tropical species used for environmental, medicinal, and timber purposes

Amburana cearensis (allemão) A. C. Sm. belongs to the Fabaceae family and is primarily used in folk medicine due to its abundance of medicinal compounds, making it a viable option for mixed planting schemes not solely focused on timber exploitation.Its propagation via mini-cuttings could facilitate the multiplication of selected individuals based on desirable traits.However, the rooting percentage of mini-cuttings for this species is low.Thus, this study aimed to evaluate the rooting of mini-cuttings of A. cearensis collected from different positions on the shoots (basal, intermediate, and apical) and subjected to treatments with IBA (0, 2000, 4000, 6000, and 8000 mg L -1 ), with or without the application of H 2 O 2 (50 mM).Despite the higher survival rate of basal mini-cuttings, the position of the cuttings did not positively affect the other characteristics of the produced seedlings, except for the dry root mass.At 60 days after planting, the isolated treatments of H 2 O 2 and IBA at a concentration of 2000 mg L -1 resulted in high survival rates of A. cearensis mini-cuttings (> 80%), but did not improve the rooting percentage, which remained below 50%.