Ultraestructura del bambú Guadua amplexifolia (Poaceaea: Bambusoideae) presente en Costa Rica
Fecha
2006-12
Tipo
artículo original
Autores
Jiménez García, Víctor
Montiel Longhi, Mayra
Guevara Berger, Eric
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Resumen
Se estudió la ultraestructura anatómica de la lámina y la vaina de la hoja, así como de la bráctea del culmo, de Guadua angustifolia var. Bicolor, por medio de los micros-copio electrónico de barrido. Se encontraron similitudes con otras guaduas: estomas de alto domo, células largas con paredes sinuosas y células de sílice. Son propios de la var. bicolor el patrón estomático en la zona abaxial de la hoja cerca de la vaina, con la presencia de gran cantidad de tricomas ganchudos y sin papilas; las brácteas de color café dorado que cubren los culmos y tienen tricomas papilares que cubren el haz; y el abundante número de tricomas auriculares, en grupos de 12.
The anatomy of several parts of Guadua angustifolia var. bicolor was analyzed and characterized under a scanning electron microscope. Many similarities were observed with other Guadua species, particularly the presence of high dome stomata, of large cells with sinuous walls and of silica cells. Specific bicolor characteristics include (1) a different stomatal pattern in the adaxial zone of the leaf base (close to the sheath); (2) the abundance of hook-shaped trichomes without papilla; (3) the distinctive golden brown color of the bract that covers the culm (caused by papillar trichomes that cover the adaxial sheath); and (4) the size of the groups of auricular trichomes (formed by 12 trichomes)
The anatomy of several parts of Guadua angustifolia var. bicolor was analyzed and characterized under a scanning electron microscope. Many similarities were observed with other Guadua species, particularly the presence of high dome stomata, of large cells with sinuous walls and of silica cells. Specific bicolor characteristics include (1) a different stomatal pattern in the adaxial zone of the leaf base (close to the sheath); (2) the abundance of hook-shaped trichomes without papilla; (3) the distinctive golden brown color of the bract that covers the culm (caused by papillar trichomes that cover the adaxial sheath); and (4) the size of the groups of auricular trichomes (formed by 12 trichomes)
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Palabras clave
Guadua angustifolia var. bicolor, Ultraestructura, Morfología, Anatomía, Guadua angustifolia var. bicolor, Ultrastructure, Morphology, Anatomy, 633.587 286 Otras fibras duras