Abstract: Using Gerbera jamesonii Bolus Zhenai as the sample, the effects of the combination of preprocessing solution and vase preservation solution on malondialdehyde （MDA） content, cell membrane permeability, bacteria content and vase life of Gerbera jamesonii fresh-cut flowers were tested. The results showed that after 12 h treatment with preprocessing solution, MDA content and colony forming units （CFU） of Gerbera jamesonii fresh-cut flowers were significantly lower than those of the control group（deionized water） and preprocessing could decrease relative permeability of cell membrane in petals. During vase treatment, MDA content and membrane permeability of Gerbera jamesonii fresh-cut flowers decreased firstly and then increased, reaching the peaks at 14 d. CFU in anthocaulus and vase preservation solution increased gradually throughout the vase treatment. Vase preservation solutions of Chrysal cut flower food and Oasis flower food-liquid showed relatively good antibacterial effects. Chrysal professional 1 and Chrysal cut flower food were the solution combination with the best preservation effect, which could prolong vase preservation life of cut flowers, significantly. Cumulative values of MDA content, membrane permeability and CFU in preprocessing and vase preservation period were significantly lower than those of the control group.

Key words: Gerbera jamesonii Bolus, preservative, cut flower, postharvest pretreatment, fresh-keeping effects