Peróxido de hidrogênio na redução da sensibilidade ao alumínio em sementes de canola (Brassica napus var. oleifera (Moench) Delile): germinação e crescimento inicial

Abstract

Canola (Brassica napus var. oleifera (Moench) Delile) is a Brassicaceae with economic appeal due to the high quality of its oil, which can be designed both for human consumption and for biodiesel production. However, little is known about the behavior of this culture when exposed to aluminum, which is toxic in acidic soils such as, for example, the soils of Brazilian Savannah. The objective of this study was to evaluate the reduction in sensitivity to aluminum in canola seeds previously soaked in hydrogen peroxide. To this end, three studies were performed them and it was concluded that: 1) The canola seeds are sensitive to aluminum and high concentrations of hydrogen peroxide. Concentrations near 0.11 M of hydrogen peroxide provided the greatest percentage of normal seedlings. 2) The dose 0.15 M of hydrogen peroxide associated with different dosages of aluminum keeps the canola’s emergency. However, the initial growth of the plants was impaired with increasing doses of aluminum, regardless of the concentration of hydrogen peroxide used. 3) The treatment of canola seeds with hydrogen peroxide in concentrations evaluated, was not effective in reducing the sensitivity of plants to aluminum.