Avaliação do efeito do halopriming na germinação de sementes de Anadenanthera colubrina (Vell.) Brenan em diferentes concentrações salinas

Abstract

Due to climate change, the advancement of desertification, and the impact of anthropogenic actions, such as improper irrigation management and the inadequate disposal of effluents into nature, increasingly adverse conditions are being created in the environment, such as the accumulation of salts in the soil, which directly affects plants due to the high osmotic potential in the soil. This study was conducted at the Laboratory of Plant Physiology and Ecophysiology (LFEV) at the Federal University of Sergipe (UFS), São Cristóvão Campus. The morphological characterization of the plot was performed using computational imaging through the Groundeye® software, and the seeds exhibit orthodox behavior. This study evaluated halopriming with NaCl as a pre-germination treatment on Anadenanthera colubrina (Vell.) Brenan seeds, at different saline concentrations of 150, 300, 450, and 600 mM, with distilled water as the control treatment. The saline concentration and conditioning time were defined based on the sublethal concentration for germination and the first phase of the germination process, respectively. The study observed germination inhibition at saline concentrations starting from 450 mM and noted a slight improvement in the evaluated germination parameters. However, no significant difference was found between germination under normal conditions and after the halopriming treatment. Further evaluation of different conditioning times and NaCl concentrations is necessary.