Tobacco (Nicotiana tabacum L. cv KF109) seeds were artificially aged in a controlled environment of 45~circC and 80% relative humidity condition for different duration up to 14 days before priming in polyethylene glycol 6000 solution of equivalent osmotic potential of -0.8 MPa for 8 days at 25~circC . The seeds aged only and primed after aging were germinated at 15~circC and 25~circC to observe the priming effects on the germination of aged seeds at different temperature. The germination percentage of the aged seeds was rapidly dropped starting from 8 days of aging and mean germination time (T50 ) was greatly increased, particularly in germination at 15~circC . The germination capacity was greatly restored in the primed seeds after aging, particularly in the seeds of longer aging and germinating at 15~circC .>.

• Tai-Gi Min