Thousand-grain weight and health degree of traditonal Chinese medicine(TCM)seeds were important indexes for evaluating the quality of TCM seeds in low temperature storage,and they were important parts of seed management in the technical system of cryopreservation of TCM germplasm re-sources,which had important guiding significance for seeds collection and management.In this arti-cle,the thousand-grain weight and health degree of 10 062 TCM seeds from 189 families,926 genera and 2 317 species were tested in the State Bank of Chinese Drug Germplasm Resources.The data were analyzed by Excel 2016,SPSS 20.0 and Origin 2021b.The results showed that the thousand-grain weight of TCM seeds were mostly in the range of 0 g<X<10 g,accounting for 59.85%.And the thousand-grain weight distribution of TCM seeds of different families had great differences.After the initial cleaning,89.55%of TCM seeds health degree were more than 70%,and the main reasons for the low seed health were empty and moth damage.According to the analysis results of thousand-grain weight and health degree,the management scheme of TCM seeds was updated.The standard of seed collection quantity or weight was formulated according to the distribution range of thousand-grain weight of seeds and the health degree of the family.In the process of seed purification treatment and quality assessment,the seed purification results should be determined first,and then the appropriate purification method and the seed health detection method should be selected.This work provided a sci-entific basis for the formulation of the technical specifications of TCM seeds collection and seed man-agement,improved the technical system of low temperature preservation of Chinese medicine germ-plasm resources,and laid a foundation for the scientific preservation of TCM seeds.
Low temperature storageChinese medicine seedsSeed preservation technology sys-temThousand-grain weightHealth degree