风箱果种子催芽技术研究

以风箱果自然种群成熟的种子为研究对象，对种子的生活力和催芽方法进行了研究，结果表明：TTC染色法测得风箱果种子的生活力达到94.44%；清水浸种处理的发芽势和发芽率均较低，以浸种48 h的效果较好，发芽率为28.33%；不同化学药剂处理均能不同程度的提高发芽率，其中50 mg·L^-1 GA₃+4%KNO₃的混合药剂处理72 h的萌发效果最好，发芽率达到90%；100和200 mg·L^-1 GA₃能极显著提高发芽势（P<0.01）；低温处理28 d能显著提高发芽势和发芽率（P<0.05）。

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^-1 GA₃+4% KNO₃ 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^-1 GA₃ (P<0.01). The germination percentage and germination potential were significantly improved by the treatment of low temperature for 28 d(P<0.05).