* A concentration of 10 µmol/L selenite positively influenced seedling growth by enhancing root morphology and physiological characteristics, including increased superoxide radical production and elevated activities of antioxidant enzymes.
* The study found that small selenite doses (≤ 10 µmol/L) effectively improved root activity and morphology, leading to greater biomass in rapeseed seedlings, with the most significant improvements seen in root volume and surface area.