川续断种子质量分级标准的研究

目的:制定川续断种子的质量分级标准。方法:对来自不同居群的川续断成熟种子进行千粒重、含水量、发芽率、生活力、单粒大小、净度等指标的测定和外观形态的观察,使用SPSS统计软件,通过聚类分析制定川续断种子的质量分级标准。结果:Ⅰ级川续断种子的发芽率不低于85%,千粒重不低于3.94 g,净度不低于90.95%,含水量不高于9.08%;Ⅱ级川续断种子的发芽率不低于64%,千粒重不低于3.57 g,净度不低于83.66%,含水量不高于10.23%;Ⅲ级川续断种子的发芽率不低于35%,千粒重不低于3.04 g,净度不低于75.51%,含水量不高于11.37%。结论:千粒重和发芽率是川续断种子质量分级标准的主要指标,净度和含水量是质量分级标准的重要参考指标。该方法制定的质量分级标准科学、可行,可作为川续断种子的质量控制标准。

Quality classification standard of Dipsacus asperoides seed

Objective: To establish seed quality classification standard of Dipsacus asperoides. Method: Through the detection on seed purity, 1 000-grain weight, water content, germination rate of D. asperoides from different areas, and observation on seed external characters, the primary seed quality classification standard of D. asperoides was preliminarily formulated. Result: The first level D. asperoides seed germination rate was over 85%, 1 000-grain weight above 3.94 g, purity above 90.95%, water content lower than 9.08%. The second level D. asperoides seed germination rate was over 64%, 1 000-grain weight was above 3.57 g, purity was over 83.66%, water content was above 10.23%. The third level seed germination rate was above 35%, 1 000-grain weight was above 3.04 g, purity was above 75.51%, water content was lower than 11.37%. Conclusion: Germination rate and 1 000-grain weight were the main indexes of quality classification standard, and purity and water content provide the important reference. This quality classification standard of D. asperoides was scientific and feasible, and can be used as the quality control standard of D. asperoides.