川续断种子吸水特性及萌发特性研究

Study on the Character of Water Absorption and the Germination of Dipsacus asperoides Seeds

目的:研究川续断种子的吸水萌芽特性,为川续断规范化种植提供理论依据和技术参考。方法:种子吸水的研究采用重量法,种子发芽条件研究根据常规发芽试验进行。结果:川续断种子入水后前6h为种子快速吸水阶段,吸水量占最大吸水量的87.2%,20h内吸水饱和,其吸水量为种子平均重量的97.3%左右;川续断种子发芽的适宜温度为20～25℃,最适温度为20℃。发芽初次计数时间为置床后第5天,末次计数时间为置床后第15天,发芽势统计时间为第8天。结论:川续断具有快速吸水的生物学特性;温度对川续断种子的发芽率、发芽势,发芽指数有显著影响,光照有利于种子发芽。

Objective ： To provide theoretic warrant and technical reference for Dipsacus asperoides standardization planting, by carting out various systemic studies such as character of water absorption and groping germinating conditions. Method： Heft method was used for measuring changes of water absorption capacity. And seeds germination were probed into by r the general germination method. Result： Dipsacus asperoides seeds water absorption reached 87.2% of the maximum after into the water 6 hours, moreover, the imbibition of seeds reached saturated within 20 h and water-taking amount was 0. 973 times of seed weight. The suitable temperature for Dipsacus asperoides seed germination was 20℃ to 25 ℃, the optimum temperature was 20℃. And the best germinating-beds was top of paper. The first seeding-counting time was the 5th day after beginning the test, and the final time was the 15th day. The germination energy＇s statistical time was the 8th day. Conclusion ： The results denoted that Dipsacus asperoides seed had the biological character of rapid water absorption. Temperature and germinating-beds had significant effect on germination rate, germination energy, germ/nation index of Dipsacus asperoides seed. Light was beneficial to seed germination.