PMID: 18720859Aug 30, 2008Paper

Research of seed quality grading of Glycyrrhiza uralensis

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
Qun SunBao-Qi Sun

Abstract

To formulate the seed quality grading standard of Glycyrrhiza uralensis. Thousand-grain weight, seed moisture, germination rate, purity of G. uralensis seed samples from 24 regions were tested. Through statistical analysis, the key indicator and the reference indicators for seed quality grading were defined. Germination percentage was the primary indicator of seed quality grading, thousand-grain weight, cleanliness and moisture content were important reference indicators. The seed quality of each grade should reach the following requirements: for first grade seeds, germination percentage > or = 85% , purity > or = 92%, thousand-grain weight > or = 13 g, seed moisture < or = 11%; for second grade seeds, germination percentage 75%-85%, purity 83%-92%, thousand-grain weight 11-13 g, seed moisture < or = 11%; for third grade seeds, germination percentage 65%-75%, purity 74%-83%, thousand-grain weight 9-11 g, seed moisture < or = 11%.

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