玄参种子质量分级标准的研究

Research on Quality Classification Standard of Scrophularia Ningpoensis Hemsl. Seeds

目的制定玄参种子的质量分级标准。方法对29个不同产地的玄参种子进行种子形态特征、千粒重、净度、发芽率、发芽势、含水量、生活力等的测定,通过SPSS分析软件对以上数据进行相关性分析、主成分分析及聚类分析,并结合生产实际和可操作性,制定玄参种子的质量分级标准。结果Ⅰ级玄参种子发芽率≥80.0%,千粒重≥0.170 g,净度≥98.0%,Ⅱ级玄参种子发芽率≥70.0%,千粒重≥0.150 g,净度≥95.0%,Ⅲ级玄参种子发芽率≥60.0%,千粒重≥0.130 g,净度≥92.0%。结论发芽率、净度、千粒重是玄参种子质量分级标准的重要指标。此方法制定的质量分级标准科学、可行,可作为玄参种子的质量控制标准。

Objective To establish the quality classification criteria of Scrophularia ningpoensis Hemsl. seeds.Methods Twenty-nine batches of S. ningpoensis seeds from different provenances were selected. The seed germination rate, germination potential, seed purity, seed viability, 1000-seed weight and moisture content were determined and analyzed through SPSS software. Seed germination rate, seed purity and 1000-seed weight were selected as the main index for classification. The seed quality grading of S. ningpoensis was set as three grades. The seed quality of each grade should meet following requirements. Results For the first grade seeds, seed germination rate ≥ 80.0%, 1000-seed weight ≥ 0.170 g, seed purity ≥ 98%. For the second grade seeds, seed germination rate ≥ 70.0%, 1000-seed weight ≥0.150 g, seed purity ≥ 95%. For the third grade seeds, seed germination rate ≥ 60.0%, 1000-seed weight ≥ 0.130 g, seed purity ≥ 92%. Conclusion Seed germination rate, seed purity, and 1000-seed weight are significant indicators for quality grading criteria. The quality classification criteria established by this method is scientific and practicable, which can be used as the quality control standard for Scrophularia ningpoensis Hemsl. seeds.