Technique of Accelerating Germination of Physocarpus amurensis Seed

In this paper,the seeds from natural population of Physocarpus amurensis,were used to study the seed viability and ways to accelerate germination.The results showed that the seed vigor,tested by TTC accounted for 94.44%.Seed soaking in fresh water gave low germination percentage and germination potential,the germination percentage was only 28.33% with the best soaking condition(48 h).Treatments of different chemicals improved germination percentages at different degrees,in which 50 mg·L- 1GA 3 + 4% KNO 3 mixed medicament treatment for 72 h had the best effect on germination,the germination percentage reached 90%;The germination potential was significantly improved when treated by 100 or 200 mg · L- 1GA 3(P0.01).The germination percentage and germination potential were significantly improved by the treatment of low temperature for 28 d(P0.05).