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vol.54 suppl.2Ultraestructura del bambú Guadua angustifolia var. bicolor (Poaceae: Bambusoideae), presente en Costa Rica author indexsubject indexarticles search
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Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744

Abstract

MONTIEL, Mayra; JIMENEZ, Víctor M  and  GUEVARA, Eric. Caracterización anatómica ultraestructural de las variantes "Atlántica", "Sur" y "Cebolla" del bambú, Guadua angustifolia (Poaceae: Bambusoideae), en Costa Rica. Rev. biol. trop [online]. 2006, vol.54, suppl.2, pp.1-12. ISSN 0034-7744.

We present an ultrastructural characterization of three variants or "forms" of Guadua angustifolia and of the closely related Guadua sp., from Costa Rican populations. Their ultrastructure is similar. Differences are: the absence of trichomes in the abaxial epidermis of leaf lamina in "Cebolla" and hook-shaped trichomes in the lamina of Guadua "Sur" or "Mansa". Trichomes were bicellular in "Atlántica" or "Brava". In the adaxial section of the culm sheaths, "Cebolla" lacks trichomes, "Sur" has abundant and long unicellular trichomes, and "Atlántica" has scarce trichomes (trichomes are an important taxonomic characteristic for differentiation of bamboo variants, and they facilitate genotype identification). The bulliform cells present the following variation: large and segmented in G . "Cebolla"; of medium size in G. "Sur", and thin and grouped in G. "Atlántica". Rev. Biol. Trop. 54(Suppl. 2): 1-12. Epub 2006 Dec. 01.

Keywords : Guadua angustifolia forms; ultrastructure; morphology; anatomy comparison; diversity.

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