Root anatomy of Oncidium flexuosum Sims. e Oncidium Sharry Baby (Orchidaceae)
Abstract
The present study described the anatomic organization of the roots of Oncidium flexuosum and Oncidium Sharry Baby, comparing the results with ones performed with other plants from subtribe and indicating possible adaptations to the epiphytism found in these organs. For the radicular anatomy, five roots of three plants were fixed in FAA 50 and preserved in ethanol 70%. Each root was hand-sectioned in the middle region with a shaving razor. The sections were stained with Safra-Blau 0,05% and mounted in glycerin. The roots of the studied orchids present multiseriated velamen, cortex formed by parenquimatic cells and well defined endoderms.
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References
Bücherl W (1962) Técnica Microscópica. São Paulo, Polígono.
Bukatsh F (1972). Benerkemgem zeir doppelfarbeing astrablau-safranina. Microkosmos 61: 255-256.
Chase MW, Freudenstein JV, Cameron KM, Barrett RL (2003) DNA data and Orchidaceae systematics: a new phylogenic classification. In: Chase MW, Freudenstein JV, Cameron KM, Barrett RL (Orgs) Orchid conservation. Natural History Publications. Kota Kinabalu, Sabah, pp. 69-89.
Garay LA, Stacy JE (1974) Synopsis of the genus Oncidium. Bradea 1: 393-429.
Haberlandt GFJ (1914) Physiological plant anatomy. London, Macmillan Co.
Hoehne FC (1938) As plantas ornamentais da flora brasílica. Boletim de Agricultura 1: 247-273.
Jansen WA (1962) Botanical histochemistry. San Francisco, H.H. Freeman and Co.
Metcalfe CR (1963) Comparative anatomy as a modern Botanical discipline. In, Metcalfe CR (org) Advances in botanical research, VI. New York, Academic Press, pp. 101-147.
Noel ARA (1974) Aspects of cell wall structure and development of the velamen in Ansellia gigantea Reichb. f. Annals of Botany 38: 495-504.
Porembski S, Barthlott W (1988) Velamen radicul micromorphology and classification of Orchidaceae. Nordic Journal of Botany 8: 117-137.
Pridgeon AM (1987). The velamem and exodermis of orchid roots. In, Arditti J (org). Orchid biolog y: reviews and perspectives. Ithaca, Cornell University Press, pp. 30-56.
Stern WL, Judd WS, Carlsward BS (2004) Systematic and comparative anatomy of Maxillareae (Orchidaceae), sans Oncidiinae. Botanical Journal of the Linnean Society 144: 251-274.
Stern WL, Morris MW, Judd WS (1993) Comparative vegetative anatomy and systematics of Spiranthoideae (Orchidaceae). Botanical Journal of the Linnean Society 113: 162-197.
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