Abstract:Ahstract The stem-segments of S.lineare were cultured under the light of different wavelength with similar irradiance. By comparing the morphogcnesis and physiobiochemistry of the test tube shoot, the results showed that in some cxtent, the shoot number, biomass, green pigment and the content of carbohy- drates, proteins, total nucleic acids,. RNA and DNA were influenced by the light of different wavelength. The biomass of shoot under blue light is the highest, the green pigment under white light is the highest. Red light is good for sugar synthesis and blue light is good for all others.