Ten seed lots of sorghum cultivar BR 303, with different mechanical damage levels were evaluated
by germination and vigor test after storage. Mechanical damage was detected by fast green test, and the seed
quality was evaluated by acelerating ageing, cold test, rate of germination and stand establishment. Significant
decrease on germination and vigor results were detected. The hazard effect of mechanical damages on
physiological quality of undressed sorghum seeds after six month storage was detected. Independently of the
mechanical damage levels there was not difference in seed quality among seeds dressed with fungicide and
stored seeds before storage.