Abstract
We determined the longevity (i.e., potential vase life) of cut roses across seasons and identified key factors during export that affect vase life. We obtained cut Rosa hybrida L. ‘Lovely Lydia’ roses harvested at an identical stage of maturity from commercial rose growers in Jeonju and Jangsu, Korea, in December 2014 and in April, July, and December 2015. We randomly divided the roses into two groups, which were transported to Seoul or Japan, and assessed their vase life in a controlled environment room (standard conditions) at Sejong University or in test rooms (export conditions) in flower markets in Japan. We regarded vase life under standard conditions as potential vase life and vase life under export conditions as consumer-level vase life. Overall, export-environmental conditions and vase life varied greatly across seasons. A seasonal variation in vase life was observed in both groups of flowers, and the difference between potential vase life and vase life increased as the potential vase life increased. Multiple regression analysis indicated that vase life is negatively correlated with flower auction temperature but positively correlated with potential vase life, RH during loading, and RH in the warehouse. Furthermore, the vase life of cut roses depends primarily on potential vase life, indicating that potential vase life, which is determined by the time of harvest, is modified by environmental conditions during export.
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