Studies on ultra-dry storage of Salvia miltiorrhiza seeds / 中草药

ABSTRACT

Objective To study the optimum ultra-dry method and moisture at different storage time for Salvia miltiorrhiza seeds and find the principle of storability.Methods S.miltiorrhiza seeds were dried by silica gel at room temperature and by the oven at constant temperature 50 ℃ to obtain various moisture content before stored sealed at room temperature.The optimum ultra-dry method and the optimal moisture were evaluated by measuring the germination rate,germination tendency,and vigor index,etc.Soluble sugar and MDA content were measured to investigate the seed storability.Results Desiccation by silica gel was more proper than by oven;ultra-dry storage of seeds has obvious advantages at the early stage,but with the prolong of the storage time,the advantages decreased;The optimal moisture for S.miltiorrhiza seeds storage at room temperature is about 7.5%;Seed storability is closely related to soluble sugar content in the seeds.Conclusion S.miltiorrhiza seeds can be ultra-dry stored to preserve germplasm resources.