Effect of short day interruption on flowering of spray chrysanthemum cultivars under protection
Marek Jerzy
Agricultural Academy in PoznańAbstract
Short day interruption (SDI) was applied in protected cultivation of spray chrysanthemum cultivars. SDI improved shape and quality of spray – inflorescence together with delay of flowering of plants. The delay was longest (21–26 days) in summer culture placed in plastic tunnel; in autumn culture-only 5–6 days
Keywords:
Dendranthema grandiflora, spray cultivars, short day interruption, protected cultivation, delay of floweringReferences
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Solecka M., 1993. Nie tylko fotoperiod wpływa na kwitnienie chryzantem. Ogrodnictwo 4, 22. Van Ruiten E. M., de Jong J., 1984. Speed of flower induction in Chrysanthemum morifolium depends on cultivar and temperature. Scientia Hortic. 23, 287–294.
Van Veen J. W. H., 1969. Interrupted bud formation in spray chrysanthemums – shape and quality of the inflorescence. Acta Hortic. 14, 39–60.
Jerzy M., 1994. Przemienny fotoperiod w sterowanej uprawie gałązkowych odmian chryzantem. Wiadomości chryzantemowe 17, 3–5.
Jerzy M., 2000. Chryzantemy. Odmiany i uprawa. PWRiL. Warszawa, 97–98.
Kofranek A. M., Cockshull K. E., 1985. Improving the spray formation of pompon cultivars with gibberellic acid and intercalated long days. Acta Hortic. 167, 117–124.
Langhans R., 1964. Light and photoperiod. Interrupted Lighting Program. Chapter 11 in „Chrysanthemum”. The New York State College of Agriculture. Ithaca-New York, 73–85.
Langton F. A., 1977. The responses of early-flowering chrysanthemums to daylength. Scientia Hortic. 7, 277–289.
Langton F. A., 1987. Apical dissection and light-integral monitoring as methods to determine when long-day interruptions should be given in chrysanthemum growing. Acta Hortic. 197, 31–41.
Rünger W., 1976. Licht und Temperatur im Zierpflanzenbau. Paul Parey Verlag, Berlin-Hamburg, 194–197.
Solecka M., 1993. Nie tylko fotoperiod wpływa na kwitnienie chryzantem. Ogrodnictwo 4, 22. Van Ruiten E. M., de Jong J., 1984. Speed of flower induction in Chrysanthemum morifolium depends on cultivar and temperature. Scientia Hortic. 23, 287–294.
Van Veen J. W. H., 1969. Interrupted bud formation in spray chrysanthemums – shape and quality of the inflorescence. Acta Hortic. 14, 39–60.
Marek Jerzy
Agricultural Academy in Poznań
Agricultural Academy in Poznań
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