Objective: High quality seedling is the foundation to ensure the quality and yield of medicinal herbs. It is meaningful to find agreen

safe and effective measures to shorten the time of germination

improve the germination rate and germination uniformity. In this paper

the seeds of 5 species of Chinese medicinal herbs are used as research materials. Compared with common growth regulators on Seed Germination. Method: Smoke water(SW) was made from Plane tree; TTC was used to measure the seed vigor; measure the moisture content of the seeds. The water uptake rate of the seeds was detected. Seeds were treated by water (control group)

SW (0.2% solution) and plant growth regulators

such as gibberellin (150 mg·L-1)

lanthanum chloride (0.6 mg·L-1)

calcium nitrate (30 mg·L-1) and salicylic acid (0.028 mg·L-1). Comparison the effects of smoke water and four plant growth regulators on seed germination rate/mean germination time/germination index of five highly traded Chinese medicine plants(Isatis indigotica

Platycodonis Radix

Anemarrhenae Rhizoma

Scutellariae Radix

Astragali Radix). Result: SW showed a significant improve effect to the germination rate of I. indigotica

Platycodonis Radix

Scutellariae Radix

it significantly promote the germination rate of I. indigotica for 27.27%.It showed no apparent influence on the mean germination time of the seeds.Significantly promote the germination index of Platycodonis Radix and Scutellariae Radix for 32.71% and 27.73%. It promote seed germination similar with gibberellin(GA3). Conclusion: SW is non-toxic and wild available

these characteristics make it more suitable for agricultural practice. SW has great potential in promoting seed germination of Chinese medicinal plants.