天门冬种子萌发特性研究

Study on the Germination of Asparagus Sprengreri Seed

目的：为解决天门冬种子发芽率低,并且发芽的整齐度不高,出苗所需时间长的问题.方法：以当年采摘的天门冬种子为试验材料,对其萌发特性及适宜的萌发条件进行了研究.结果：种皮对天门冬种子萌发无明显抑制作用,去皮对天门冬种子萌发不利;天门冬种子浸泡48～96 h显著促进其萌发,但天门冬种子不含可溶性的种子萌发抑制物质,40 ℃和60 ℃水浸泡和黑暗条件对天门冬种子萌发较为有利;室温湿沙储藏（种沙比1∶3）是较好的储藏方式.结论：天门冬种子为嫌光性种子,不含水溶性萌发抑制物质,40～60 ℃水浸泡种子能明显缩短发芽时间,提高发芽率,使发芽整齐而集中.

Objective： To solve the problem of low germination rate, low orderliness and long seedling time of Asparagus Sprengreri Seed. Method： To study germination trait and suitable germination conditions of Asparagus sprengreri seed, which had been picked at the same year. Results： Seed-coat had no obvious inhibitory effect on germination of Asparagus sprengreri seed, and removed it might be disadvantaged to germination. Soaking it for 48 - 96 h would promoted seeds germination obviously, and the seed contained no solu- ble inhibitiory materials. It was benefit for germination When seeds were treated with water at 40 ℃ or 60 ℃and germinated at darkness. The better method of the seed storage was in wet sand （ seeds ： sand = 1 ： 3） at common temperature. Conclusion- Asparagus sprengreri seed disliked light, and had no soluble inhibitory materials. Soaking seeds at 40 - 60 ℃ might shorten germination time and increase germination rate significantly, and made the germination regular and centralized