Procedure: One hundred seeds each in four replications are tied in a fine
muslin cloth. The tied seeds are placed in jar on a wire mesh. The lower part ofthe
jar is filled with water. There should not be a direct contact between water and the
seed. The jar is covered with the lid and sealed with parafin wax to make it air tight.
Thejar is thenplacedin the acceleratedagingchambermaintained at 45 :t 2°C
temperature for3-5 days. The jar is removed after this period and the seeds are
cooled in a dessicator. The seeds are then tested in a normal germination test
specific to different crops. .The percent germination gives level.of seed vigour.
Higher the germination percentage greater is thevigour of the seed.