[Effects of seeds irradiation with 60Cogamma-ray on shoot growth and physiological status of Carthamus tinctorius].

Objective: To provide the radiation-induced technical reference and theoretical basis for safflower and other medicinal plants.

Method: Seeds of Carthamus tinctorius were irradiated with 60Cogamma-ray, and germination rate of seeds, germination, seedling rate and seedling height, root length, fresh weight, root activity and peroxide catalase (CAT), peroxidase (POD), superoxide dismutase (SOD) activity were determined.

Result And Conclusion: The LD50 of radiation dose is about 300 Gy, effects of seeds irradiation with 6Co-gamma-ray on shoot growth and physiological status of C.

[Study on seed determination practice in Polygala tenuifolia].

Objective: To control the seed quality market, a study on the seed determination practice in Polygala tenuifolia was carried out.

Method: By studying the thousand grain weight moisture content, viability, genuineness, purity and germination percentage, some indices of seeds were fixed to the standards. The seed determination practice in P.

[Studies on diversity of quality of Forsythia suspensa].

Objective: To study on diversity of quality of Forsythia suspense collected from different regions.

Method: The hundred-seed weight of shucks was analyzed by the method of hundred grain mass. The thousand-seed weight of seeds was analyzed by the method of thousand grain mass.

[Study on quantified relationship between contents of active components in Forsythia suspense and nutrition of soil].

Objective: To sift the main effective factors of active component of Forsythia suspense.

Method: The active component of F. suspense was mensurated by HPLC, and the contents of nutrition in soil was determined by conventional methods.