Peróxido de hidrogênio na redução da sensibilidade ao alumínio em sementes de Crotalaria ochroleuca

Abstract

Aluminum is an element present in Brazilian soils, mainly in the Cerrado biome and its presence is responsible for the formation of reactive oxygen species, which results in damage to the plasma membrane. Hydrogen peroxide has been studied as an acclimatization inducer and it is possible to obtain a plant with greater tolerance to the adverse environment. This work aimed to subject Crotalaria ochroleuca seeds previously treated with hydrogen peroxide to the stress caused by aluminum. The physiological quality of the seeds was evaluated by means of germination and vigor test determined by first count, germination speed index, shoot and root length test, and shoot and root dry mass. Crotalaria ochroleuca seeds are sensitive to aluminum and high concentrations of hydrogen peroxide impaired seedling development.