ISHS Acta Horticulturae 185: I International Protea Research Symposium
PROSPECTS OF DELAYING FLOWERING TIME OF LEUCOSPERMUM |
| Authors: | G. Jacobs, D.N. Napier, D.G. Malan |
| Abstract:
Leucospermum plants grow vegetatively during spring and summer. Reproductive development commences in autumn after shoot extension growth has terminated and the inflorescences develop during winter. The inflorescences open in spring. Secondary flower buds develop below the primary inflorescence. Floret differentiation in these buds has progressed to the stage where the perianth initials are visible. Further development of the secondary flower buds are inhibited by the primary inflorescence. Removal of the primary inflorescence causes secondary flower buds to develop thus delaying the flowering time. Axillary buds below the secondary flower buds are completely inhibited. These buds can develop into inflorescences if they are released from correlative inhibition between April and the end of June. Factors related to the induced state for flower formation are discussed. | |
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