[Study on seed quality test and quality standard of Changium smyrnioides].

OBJECTIVE: To study seed quality test methods, and provide basis for establishing seed quality standard of Changium smyrnioides. METHOD: According to the seed testing regulations, the seed quality of C. smyrnioides from different producing area and in different growing years was measured. RESULT AND CONCLUSION: The range of seed purity, weight per 1000 seeds, seed moisture content, seed viability were determined and the primary seed quality classification standard was established.