ISHS Acta Horticulturae 766: XXVII International Horticultural Congress - IHC2006: International Symposium on Ornamentals, Now!
ECHEVERIA SPP. - LEAVES, BRACTS AND FLOWERING STEMS |
| Authors: | M.W. Borys, H. Leszczyńska-Borys, J.L. Galván |
| Keywords: | trunk, apex, stem, gross, morphology, leaves or bracts removal, trunk decapitation |
| Abstract:
Flowering stems appeared among rosette leaves in a defined zones. Stems are always covered with bracts. Emerging stems tend to deflect horizontally from the rosette axis. Trials were started to define the role of rosette leaves and bracts on the emergence and size of flowering stems. By reducing the rosette leaves to 1, 2, or 3, removing or leaving all leaves on the trunk, and leaving or removing bracts on the stem it was possible to conclude that rosette leaves conditioned the emergence of flowering stems but these leaves were without effect on the size of bracts and flowering stems. The growth of flowering stems depended on the presence of bracts on the stem. The image of gross morphology of the trunk and of the flowering stem is presented and its utility is discussed. | |
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