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The aim of this study is for putting a practical use of the bud opening in cut carnations (Dianthus caryophyllus). Buds of carnation ´Desio´ and ´Fillandero´ were used a experimental materials for cold storage at 2±0.5℃, and we classified it into eight bud stages: mung bean, green pea, hazelnut, tight, cross, star, paint brush, and full open. Flowering percentage was 80% in two culrivars even 60 days after cold storage in the larger bud than hazelnut stage. Flower diameter of cut flowers after 30 days of storage did not show any change, compared with those in vivo. But in case the longer storage peroid and the smaller bud stage, flower diameter was small, compared with those bloomed in green house. Anthocyanin content tended to increase, in case the bud was big. It increased, compared with the flowers in vivo, or maintained the same level in the larger bud than hazelnut stage. And there was no difference in anthocyanidin composition of petals. Also the chlorophyll content in leaves was more or the same, compared with cut flowers bloomed in vivo regardless of storage peroid in the larger bud than hazelnut stage. But chlorophyll content of ´Fillando´ was less, compared with control. As a result, it was possible to induce flowering of cut carnation at bud in the hazelnut stage which is two steps earlier than existing cross stage, and flower quality was maintained well even after 60 days of cold storage.
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