Abstract

The genus Dracaena (Agavaceae family) comprises about 50 species of woody stemmed plants in tropical regions of Africa and Asia (Bailey 1949), some of which are grown as ornamental plants. Similar and closely related to Dracaena are species of the genus Cordyline. Taxonomic position of some Cordyline species seems to be uncertain and conflicting, since they are also referred to as belonging to the genus Dracaena. Species recognized as ornamental plants include (Saakov 1983): D. fragrans Ker-Gawl. (corn palm; tropical Africa). Green-foliaged plant and several distinct horticultural varieties/cultivars including: Massangeana, Lindenii, Rothiana, and Victoria. D. deremensis Engler. (striped dracaena; tropical Africa) with varieties/cultivars Bausei and Warneckii, D. godseffiana Sander. (gold dust dracaena; Congo) D. sanderiana Sander. (ribbon plant; Congo) D. draco L. (dragon tree; Canary Isles) D. arborea (Willd.) Link. (East Africa and Angola) D. surculosa Lindl. (Sierra Leone), variety/cultivar Punctata D. hookeriana C. Koch (South Africa) D. reflexa Lam, (Mauritius) D. goldieana Baker (tropical South Africa) KeywordsRoot ElongationLateral Root FormationPlant Cell Tissue Organ CultRoot Elongation RateAdenine SulfateThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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