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The effect of sucrose, cytokinins, and selected inhibitors of ethylene biosynthesis and action on the longevity of cut ixia flowers

Maciej Brzezina*, Zdzisław Piskornik*, Maria Piskornik**

**Department of Plant Physiology
**Department of Ornamental Plants
**Faculty of Horticulture, Agricultural University
**29 Listopada 54, 31-425 Kraków, Poland

Cut ixia flowers (Ixia hybrida), similarly as those of many other bulbous plants, have a very short vase life. However, 24-hour pulsing with sucrose solutions (1-6%) reduced fresh weight decrease and extended their life by about one day. However, 24-hour treatment with inhibitors of ethylene biosynthesis and/or action did not significantly prolong their life.

The ethylene production and ACC oxidase activity in vivo in different parts of flower and development stages were also measured. They produced small amounts of ethylene but showed high ACC oxidase activity in vivo, especially at the bud stage.

Brzezina M., Piskornik Z., Piskornik M., 1994. The effect of sucrose, cytokinins, and selected inhibitors of ethylene biosynthesis and action on the longevity of cut ixia flowers. Folia Horticulturae VI/2: 63-70.