ISHS Acta Horticulturae 205: Symposium on the Development of New Floricultural Crops, XXII IHC
THE RELATIONSHIP BETWEEN FLOWER BUD INITIATION AND RESPIRATION IN ASIATIC HYBRID LILY BULBS |
| Authors: | G. Pergola, Mark S. Roh |
| Abstract:
Asiatic hybrid lily, Lilium elegans, cultivars were used to investigate the relationship between the respiration pattern, changes in soluble carbohydrates, and flower bud initiation. The respiration pattern in non-vernalized and vernalized bulbs was investigated. Each cultivar had a characteristic respiratory pattern and produced an initial CO2 peak followed by a decline (CO2 dip) before increasing to a second peak. This respiration pattern was dependent on the bulb vernalization temperature. It was concluded that flower bud initiation is completed before the CO2 dip in vernalized bulbs. Further, the level and pattern of respiration can be used to determine the degree of cold bulbs received before harvest. Soluble glucose and fructose increased only in the shoot apex. This may be useful in understanding the physiology of flower bud initiation. | |
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