Manipulation of Flowering Time by Pruning of Protea cv. Sylvia (P. eximia × P. susannae)
| Autor: | Audrey I. Gerber, Gerard Jacobs, Karen I. Theron |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | HortScience. 36:909-912 |
| ISSN: | 2327-9834 0018-5345 |
| DOI: | 10.21273/hortsci.36.5.909 |
| Popis: | The date of pruning affected flowering time of Protea cv. Sylvia (P. eximia × P. susannae) by influencing the flush on which inflorescence initiation occurred, and the harvest could be manipulated to fall within the optimum marketing period for export to Europe. Flowers initiated on the spring flush reached anthesis in January-February, those on the first and second summer flushes in April-May and July-August, respectively, and those on the autumn flush in November-December. Thus, flowering shoots harvested within the optimum marketing period (September to February) initiated inflorescences on the autumn and spring flushes. Because shoots on the spring flush initiated inflorescences readily, many flowering shoots harvested in January and February (following initiation the previous spring) were short and therefore unmarketable. For commercial production, pruning in July is recommended to allow harvest in October-December of the following year. Since the vegetative and reproductive cycles necessary to produce inflorescences on long stems span more than a year, a biennial cropping system is recommended. |
| Databáze: | OpenAIRE |
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