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- W631929037 startingPage "373" @default.
- W631929037 abstract "En este estudio, se caracteriza la anatomia de la lamina foliar de ocho especies arboreas que predominan en la Estacion Experimental Nicolasito de la Facultad de Agronomia de la Universidad Central de Venezuela, las cuales distinguen diferentes comunidades vegetales presentes en dicha estacion, tales como: Congriales, Quereberales y Saladillales. Ellas son: Andira inermis, Bowdichia virgilioides, Byrsonima crassifolia, Caraipa llanorum, Couepia paraensis, Curatella americana, Duroia spucei y Sweetia nitens. El objetivo de la investigacion fue interpretar los rasgos anatomicos presentes en dichas especies que facilitan su adaptacion a las condiciones ambientales imperantes en el area. Se recolectaron muestras de hojas ubicadas a plena exposicion solar, de tres individuos en cada zona, y se fijaron en FAA hasta su procesamiento. Este ultimo se efectuo siguiendo las tecnicas clasicas para la preparacion de laminas semipermanentes observables bajo el microscopio optico. Se realizaron algunas mediciones y determinaciones cuantitativas, asi como pruebas histoquimicas. Los resultados revelan que estas especies muestran mayormente rasgos de xeromorfismo que les permiten adaptarse a las sequias temporales y a la influencia de la intensa luz. Entre dichos rasgos pueden citarse: pared celular y cuticula mas gruesas, mesofilo compacto, alta proporcion de parenquima en empalizada, haces vasculares con extensiones esclerenquimaticas, entre otras. P alabras clave : Estructura anatomica, hoja, arboles, comunidades vegetales. ABSTRACT In this study, the blade leaf anatomy is characterized from eight tree species that predominate in the Nicolasito Experimental Station of the Agronomy Faculty of the Venezuela Central University, which distinguish different plant communities present in the station, such as: Congriales, Quereberales and Saladillales. They are: Andira inermis, Bowdichia virgilioides, Byrsonima crassifolia, Caraipa llanorum, Couepia paraensis, Curatella americana, Duroia sprucei and Sweetia nitens. The objective of the research was to interpret the anatomical characteristics present in those species that facilitate their adaptation to the environmental conditions prevailing in the area. Leave samples were collected from those located at full exposure, from three individual trees by zone, and were fixed in FAA until processing. The latter was performed following classical techniques for the preparation of semi-permanent slides observable under the optical microscope. Some measurements and quantitative determinations, as well as histochemical tests were performed. The results reveal that these species showed mostly xeromorphic characteristic that allow them to adapt to the seasonal droughts and the influence of intense light. Among these features: thick cell wall and cuticle, compact mesophyll, a high proportion of palisade parenchyma, vascular bundles with schlerenchimatic extensions, among others. K ey words : Anatomy structure, leaf, tree, vegetal community." @default.
- W631929037 created "2016-06-24" @default.
- W631929037 creator A5028116111 @default.
- W631929037 creator A5062151527 @default.
- W631929037 date "2014-12-01" @default.
- W631929037 modified "2023-09-23" @default.
- W631929037 title "ANATOMÍA DE LA LÁMINA FOLIAR DE ESPECIES ARBOREAS PREDOMINANTES EN LA ESTACIÓN EXPERIMENTAL NICOLASITO, ESTADO GUÁRICO, VENEZUELA" @default.
- W631929037 hasPublicationYear "2014" @default.
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