Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)

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The pistillate inflorescence of Fagaceae is surrounded and protected by a structure uniquewithin the angiosperms: the cupule. Since last century, the lack of homologies, even amongthe groups more closer related to this family, has given place to a morphological approachto this structure. Historicall...

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Autor principal: Picca, Pablo Ignacio
Otros Autores: Palacios, Ramón Antonio
Formato: Tesis doctoral publishedVersion
Lenguaje:Español
Publicado: Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales 1998
Materias:
FAGACEAE
NOTHOFAGUS
CUPULES
INFLORESCENCES
MORPHOLOGY
ANATOMY
Acceso en línea:https://hdl.handle.net/20.500.12110/tesis_n3031_Picca
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=aextesis&d=tesis_n3031_Picca_oai
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Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-tesis_n3031_Picca_oai
record_format dspace
spelling I28-R145-tesis_n3031_Picca_oai2023-04-26 Palacios, Ramón Antonio Picca, Pablo Ignacio 1998 The pistillate inflorescence of Fagaceae is surrounded and protected by a structure uniquewithin the angiosperms: the cupule. Since last century, the lack of homologies, even amongthe groups more closer related to this family, has given place to a morphological approachto this structure. Historically, the small, inmature cupules and the related pistillate inflorescences have beenfocused on the mature, lignified and more conspicuous cupules and on the fruits protectedby this kind of structures. In the present research work, it has been studied the external morphology of the staminateinflorescences and of the inmature cupules of the southamerican species of Nothofagus B1. (Fagaceae). It has also been studied the inner vascular pattern of the cupule’s valves. The purpose of this research is to get a better comprehension of the morphological natureof such interesting and enigmatic structure. An a possibleexplanation for the evolution of thecupule’s caracteristics is proposed, rlying on the different morphological variants observedin the studied species. In this way, the morphological links between Nothofagus and Trigonobalanus clearly appear confirming the close link existing between Nothofagus andthe rest of the Fagaceae. Fil: Picca, Pablo Ignacio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf https://hdl.handle.net/20.500.12110/tesis_n3031_Picca spa Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar FAGACEAE NOTHOFAGUS CUPULES INFLORESCENCES MORPHOLOGY ANATOMY Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae) Exomorphological and anatomical study of the inflorescences of Southamerican Nothofagus BL. (FAGACEAE) species info:eu-repo/semantics/doctoralThesis info:ar-repo/semantics/tesis doctoral info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=aextesis&d=tesis_n3031_Picca_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
language Español
orig_language_str_mv spa
topic FAGACEAE
NOTHOFAGUS
CUPULES
INFLORESCENCES
MORPHOLOGY
ANATOMY
spellingShingle FAGACEAE
NOTHOFAGUS
CUPULES
INFLORESCENCES
MORPHOLOGY
ANATOMY
Picca, Pablo Ignacio
Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)
topic_facet FAGACEAE
NOTHOFAGUS
CUPULES
INFLORESCENCES
MORPHOLOGY
ANATOMY
description The pistillate inflorescence of Fagaceae is surrounded and protected by a structure uniquewithin the angiosperms: the cupule. Since last century, the lack of homologies, even amongthe groups more closer related to this family, has given place to a morphological approachto this structure. Historically, the small, inmature cupules and the related pistillate inflorescences have beenfocused on the mature, lignified and more conspicuous cupules and on the fruits protectedby this kind of structures. In the present research work, it has been studied the external morphology of the staminateinflorescences and of the inmature cupules of the southamerican species of Nothofagus B1. (Fagaceae). It has also been studied the inner vascular pattern of the cupule’s valves. The purpose of this research is to get a better comprehension of the morphological natureof such interesting and enigmatic structure. An a possibleexplanation for the evolution of thecupule’s caracteristics is proposed, rlying on the different morphological variants observedin the studied species. In this way, the morphological links between Nothofagus and Trigonobalanus clearly appear confirming the close link existing between Nothofagus andthe rest of the Fagaceae.
author2 Palacios, Ramón Antonio
author_facet Palacios, Ramón Antonio
Picca, Pablo Ignacio
format Tesis doctoral
Tesis doctoral
publishedVersion
author Picca, Pablo Ignacio
author_sort Picca, Pablo Ignacio
title Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)
title_short Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)
title_full Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)
title_fullStr Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)
title_full_unstemmed Estudio exomorfológico y anatómico de las inflorescencias de las especies Austroamericanas del género Nothofagus BL. (Fagaceae)
title_sort estudio exomorfológico y anatómico de las inflorescencias de las especies austroamericanas del género nothofagus bl. (fagaceae)
publisher Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales
publishDate 1998
url https://hdl.handle.net/20.500.12110/tesis_n3031_Picca
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=aextesis&d=tesis_n3031_Picca_oai
work_keys_str_mv AT piccapabloignacio estudioexomorfologicoyanatomicodelasinflorescenciasdelasespeciesaustroamericanasdelgeneronothofagusblfagaceae
AT piccapabloignacio exomorphologicalandanatomicalstudyoftheinflorescencesofsouthamericannothofagusblfagaceaespecies
_version_ 1766015492011589632

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