The effects of pre-treatment substances on vase life and physiological character of cut Lilium Oriental hybrid 'Siberia' and Lilium Asiatic hybrid 'Dream Land' were studied. When florets of 'Siberia' were treated with Promalin (GA 4+7 +BA), the vase life was increased as compared to other treatments. The amount of ethylene produced continuously decreased and respiration rate showed a climacteric type rise on the 5 th day. The sugar contents increased in petal, but decreased in leaf and ovary. When florets of 'Dream Land' were treated with GA 4+7 and Promalin, the vase life increased. The amount of ethylene production and respiration rate showed peak points on the 1 st day. Also, the sugar contents showed the same results as with 'Siberia'. In the case of 'Siberia', vase life was extended with Dan-solution 2 [(nano particle pure colloidal Ag + ion) 0.1% + Natural chitosan] treatment. The amount of ethylene produced continuously decreased and respiration rate showed a climacteric type rise on the 5 th day. But they were not significantly different between treatments. The sugar contents increased in petal, but decreased in leaf and ovary. When florets of 'Dream Land' were treated with Dan-solution 2, the vase life was also increased. The amount of ethylene produced and respiration rates showed peak points on the 1 st day. Also, the sugar contents showed the same results as with 'Siberia'.

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