Relationship of Number of Long Nights to Meristem Development and Flowering in Kalanchoe1
| Autor: | T. A. Nell, J. M. Fischer, T. J. Sheehan, J. E. Barrett |
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| Rok vydání: | 1982 |
| Předmět: | |
| Zdroj: | Journal of the American Society for Horticultural Science. 107:900-904 |
| ISSN: | 2327-9788 0003-1062 |
| DOI: | 10.21273/jashs.107.5.900 |
| Popis: | Cultivars of Kalanchoe blossfeldiana Poelln. varied in number of long nights required for complete flower initiation and development. ‘Montezuma’ and ‘Texas Sunset’ requried 14 long nights, while ‘Pixie’, ‘Nugget’, ‘Cactus Candy’, ‘Goddess’, ‘Tobasco’, ‘Osage Orange’, ‘Toltec’, ‘Adobe Rose’ and ‘Rotkappchen’ required 15 to 28 nights. Height of apical meristems increased in ‘Montezuma’ after 7 long nights, but changes were not evident in ‘Pixie’ until 9 long nights. Scanning electron microscopic analysis showed first evidence of sepal primordia in ‘Pixie’ after 28 long nights—6 nights later than ‘Montezuma’. Differences in the number of long nights required for flower induction were related to delayed floral initiation rather than organogenisis or maturation. |
| Databáze: | OpenAIRE |
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