Respiration, ethylene and fragrance release, and UV absorption spectrum, electrical conductivity and potassium content of soaking solution of T. sinensis seeds collected from the provinces of Yunnan, Henan and Hebei were studied during germination. There were significant differences in these indexes except electrical conductivity between seed lots collected from different regions. Measurements of all the indexes mentioned above in seeds collected from Yunnan Province showed that the first three indexes were...