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龙胆种子质量分级标准研究

Study on Seed Quality Grading Standard of Gentiana scabra Bunge

  • 摘要: 以16批龙胆种子为试验材料,获取龙胆种子真实性、净度、含水量、百粒重、生活力、发芽率和发芽势等指标的数据,采用主成分分析、系统聚类分析和K-均值聚类分析等多元统计分析方法对龙胆种子进行三级标准划分,初步制定龙胆种子的质量分级标准。结果表明,一级:净度≥79.95%,含水量≥6.40%,生活力≥87.17%,百粒重≥5.00 mg,发芽率≥77.50%,发芽势≥36.50%;二级:55.62%≤净度<79.95%,5.91%≤含水量<6.40%,86.170%≤生活力<87.17%,4.72 mg≤百粒重<5.00 mg, 69.33%≤发芽率<77.50%,31.75%≤发芽势<36.50%;三级:净度<55.62%,含水量<5.91%,生活力<86.17%,百粒重<4.72 mg,发芽率<69.33%,发芽势<31.75%。

     

    Abstract: Using 16 batches of Gentiana scabra Bunge seeds as experimental materials, the data of authenticity, clarity, water content, 100-grain weight, viability, germination rate and germination potential of Gentiana scabra Bunge seeds were obtained. Multivariate statistical analysis methods such as principal component analysis, systematic cluster analysis and K-mean cluster analysis were used to classify Gentiana scabra Bunge seeds into three levels, and the quality classification standard of Gentiana scabra Bunge seeds was preliminatively established. The results show that the ClassⅠ: the clarity ≥79.95%, the water content ≥6.40%, the viability ≥87.17%, the 100-grain weight ≥5.00 mg, the germination rate ≥77.50%, the germination potential ≥36.50%; Class Ⅱ: the clarity from 55.62% to 79.95%, the water content from 5.91% to 6.40%, the viability from 86.170% to 87.17%, the 100-grain weight from 4.72 to 5.00 mg, the germination rate from 69.33% to 77.50%, the germinatin potential from 31.75% to 36.50%; Class Ⅲ: the clarity <55.62%, the water content <5.91%, the viability <86.17%, the 100-grain weight <4.72 mg, the germination rate <69.33%, the germination potential <31.75%. This study provided the basis for the formulation of seed quality standard and the reference for the breeding of Gentiana scabra Bunge.

     

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