In order to get a better understanding on how the polyamines play roles in somatic embryogenesis, the changes in enzymes activities involved in polyamines metabolism and hydrogen peroxide eliminating during somatic embryogenesis in Asparagus officinalis were investigated. The arginine decarboxylase （ADC） had the same change trend as endogenous putrescine during the initial progress. The polyamine oxidase （PAO） activity varied in a gentle way. The ADC activity was not affected significantly by exogenous putrescine applied during the later pr...
