Li Rui-Jie, Chen Yuan, Guo Feng-Xia, Sun Lianhu, Mi Yong-Wei
Gansu Key Laboratory of Crop Genetic & Germplasm Enhancement, Demonstration Center of Experiments and Teaching for Plant Productions, Gansu Agricultural University, Lanzhou 730070, China.
Zhongguo Zhong Yao Za Zhi. 2012 Oct;37(20):3041-6.
To reveal the quality grade of Codonopsis pilosula var. modesta seedlings from Gansu and provide the scientific basis for establishment of the seedling quality classification standard.
Thirty batches of C. pilosula var. modesta seedlings collected from varied producing area of Gansu were selected as testing materials, the fresh weight of single plant, water content, length of seedling, diameter of seedling, length of bud and number of buds were determined and the grading standard were systemically analyzed by K-Means Cluster.
The C. pilosula var. modesta seedlings could be divided into 3 grades of criteria, i. e. the first-grade seedlings were at least 14.1 g of the fresh weight of seedling, 24.0 cm of length of seedling, 1.17 cm of diameter of seedling; the second-grade seedlings were 14.0-3.5 g of the fresh weight of seedling, 23.9-21.6 cm of length of seedling, 1. 16-0. 68 cm of diameter of seedling; the third-grade seedlings were 3.4-1.9 g of the fresh weight of seedling, 21.5-13.5 cm of length of seedling, 0.67-0.54 cm of diameter of seedling.
Among 30 batches of C. pilosula var. modesta seedlings, 66.7% of the seedlings belonged to the first and the second grades. It suggests that the first and the second grade seedlings should be used in the standard production.
揭示甘肃党参种苗质量等级，为建立种苗质量分级标准提供科学依据。
选取甘肃不同产地的30批党参种苗作为试验材料，测定单株鲜重、含水量、苗长、苗径、芽长和芽数，并采用K-Means聚类法对分级标准进行系统分析。
党参种苗可分为3个等级标准，即一级种苗单株鲜重至少14.1g，苗长24.0cm，苗径1.17cm；二级种苗单株鲜重14.0 - 3.5g，苗长23.9 - 21.6cm，苗径1.16 - 0.68cm；三级种苗单株鲜重3.4 - 1.9g，苗长21.5 - 13.5cm，苗径0.67 - 0.54cm。
30批党参种苗中，一、二级种苗占66.7%。建议标准生产中使用一、二级种苗。
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