Objective: To investigate the origin of different Solanum nigrum

habitat

at different growth stages and different medicinal parts of the dynamics of soluble sugars

for the development of standardization of S. nigrum cultivation measures provide a theoretical basis. Method: 80% ethanol 8 mL of ultrasonic extraction two times

each time 30 min

with phenol - sulfuric acid colorimetric determination of soluble sugar content. Result: Solanum nigrum soluble sugar content the comply with the following rules: root＜stem and lea＜fruit. Different growth cycle root and stem and leaf to meet: the early fruiting stage＜bud Issue＜mature＜before maturity＜seedling. Different growth cycle of fruit to meet: fruit＜young fruit＜ripe fruit. Conclusion: In the growth process of S. nigrum

S. nigrum soluble sugar content as its growth and development process of change. S. nigrum according to carbon metabolism at different times in its various organs in the development and changes in cultivation techniques to take reasonable and appropriate fertilizer measures to better co-ordinated control of a good growth of S. nigrum

S. nigrum in order to promote high yield

quality.