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Redalyc.ANATOMIA FOLIAR Y POLEN DE Eucryphia Cordifolia Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas ISSN: 0717-7917 [email protected] Universidad de Santiago de Chile Chile Urbina, Angelica; Parra, Alvaro ANATOMIA FOLIAR Y POLEN DE Eucryphia cordifolia Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas, vol. 6, núm. 5, 2007, pp. 225-226 Universidad de Santiago de Chile Santiago, Chile Disponible en: http://www.redalyc.org/articulo.oa?id=85617508049 Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Especial IX Simposio Argentino y XII Simposio Latinoamericano de Farmacobotánica Etnofarmacobotánica 24- ANATOMIA FOLIAR Y POLEN DE Eucryphia cordifolia [Anatomy of leaves and pollen of Eucryphia cordifolia] Angelica Urbina & Alvaro Parra Departamento de Producción Vegetal. Facultad de Agronomía, Universidad de Concepción, Casilla 537, Chillán, Chile [email protected] RESUMEN Eucryfia cordifolia, especie endémica de los bosques del sur de Chile, conocida como ulmo, se distribuye desde la octava a la décima región, muy abundante en Chiloe, también se encuentra en Argentina. La abundante floración permite la visita de agentes polinizadores , como las abejas que fabrican una miel de excelente calidad. En este trabajo se describen características morfoanatomicas de las hojas y polen de la especie, empleando técnicas de microscopia electrónica de barrido. Los resultados evidencian la presencia de una hoja bifacial con superficie abaxial con estomas entre los tricomas peltados y sobresalen algunos pelos filiformes. Superficie adaxial con una gruesa cutícula. Los granos de polen son de forma elipsoidal, dicolpados de exina reticulada. PALABRAS CLAVES ulmo, anatomia foliar, polen, eucryphia ABSTRACT Eucryfia cordifolia is a endemic south chilean wood species known as ulmo is located from eigth region to ten very abundant in Chiloe. It`s also found in Argentina. It`s great flower production allows bee visit such as the one that produces a very high quality honey. At the current study the species leaves and pollen grains anatomy and morphology features are described using techniques scanning electron microscopy. Results show that the species has bifacial leave with abaxial surface with stomata betweeen peltate trichomes and with some filamentous hairs coming up. The adaxial surface has a strong cuticle. Pollen grains are 2-colpate and they have reticulate exine and ellipsoid shape. KEYWORDS ulmo, Eucryphia, anatomic study, leaves, pollen INTRODUCCIÓN Eucryphia cordifolia, es una especie endémica de los bosques subantárticos de Chile, comúnmente conocida como ulmo o muermo, se distribuye desde la octava a la décima región, desde la costa hasta los 700 msnm abunda en la isla grande de Chiloé. Se encuentra también en Argentina. La abundante floración de esta especie permite la visita de agentes polinizadores como las abejas que fabrican una miel de excelente calidad. Es un árbol frondoso de hasta 40 metros de altura, de hojas perennes, coriáceas oblongas de margen dentado. Sus flores son vistosas, blancas, solitarias y con numerosos estambres. El objetivo del presente trabajo es describir características morfoanatomicas de las hojas y características del polen. MATERIALES Y MÉTODOS Se tomaron hojas y anteras, fueron procesadas, deshidratadas y secadas a punto critico, para ser metalizadas con vapores de oro a un espesor de 450 Aº aproximadamente, posteriormente llevadas a microscopio electrónico de barrido (MEB) de la Dirección de Investigación de la Universidad de Concepción. RESULTADOS Y DISCUSIÓN En el corte transversal de la hoja, se observa la estructura típica de una hoja bifacial. Posee una superficie abaxial con estomas entre tricomas peltados formados por células ordenadas en forma concéntrica alrededor de un pedúnculo, sobresalen algunos pelos filiformes (Fig 1). Los granos de polen esta interesante especie son de forma elipsoidal, dicolpados y de exina reticulada. (Fig 2) Figura 1. Tricomas. Bol. Latinoam. Caribe Plant. Med. Aromaticas Vol. 6 (5) 2007 225 Especial IX Simposio Argentino y XII Simposio Latinoamericano de Farmacobotánica Etnofarmacobotánica Figura 2. Granos de polen. CONCLUSIÓN Eucryphia cordifolia posee hoja bifaciaL con tricomas peltados y granos de polen bicolpados con exina reticulada. REFERENCIAS Cardenas, R., Villagran C. (2005) Chiloe Botánica de la Cotidianidad.365 Págs. Montenegro, G. (1984) Atlas de Anatomía de Especies Vegetales Autóctonas de la Zona Central. Ediciones Universidad de Chile.155 Pp.2 Riedemann P, Aldunate G (2003) Flora Nativa de Valor Ornamental. Editorial Andrés Bello. 516 Pp. Rodríguez, R. (1993) Flora Arbórea de Chile. Editorial Universidad de Concepción. 408 Pp. Bol. Latinoam. Caribe Plant. Med. Aromaticas Vol. 6 (5) 2007 226 .
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