Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America

Microspores of the 24 species of Isoetes that grow in southern South America were analyzed under a light microscope and scanning electron microscope. The microspores are monolete, elliptic in polar view, 30–40 µm long, and 20–25 µm wide. A background with various characteristics is seen on each surf...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Macluf, Carmen Cecilia, Morbelli, Marta Alicia, Giudice, Gabriela Elena
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Botánica
Sud América
Isoetes
Microsporas
Morfología
Escultura
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/135356
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-135356
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Botánica
Sud América
Isoetes
Microsporas
Morfología
Escultura
spellingShingle Botánica
Sud América
Isoetes
Microsporas
Morfología
Escultura
Macluf, Carmen Cecilia
Morbelli, Marta Alicia
Giudice, Gabriela Elena
Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
topic_facet Botánica
Sud América
Isoetes
Microsporas
Morfología
Escultura
description Microspores of the 24 species of Isoetes that grow in southern South America were analyzed under a light microscope and scanning electron microscope. The microspores are monolete, elliptic in polar view, 30–40 µm long, and 20–25 µm wide. A background with various characteristics is seen on each surface. A supra-laesural expansion is present. The perispore is ornamented and has a perforated background. In section, it has a lacunose structure. The exospore is smooth, and it has a compact structure in section. The studied species could be divided into three groups by their perispore ornamentation: equinate, rugulate, and tuberculate. Microspore size was positively correlated with increasing ploidy level, and larger microspores were associated with terrestrial habitats. A convergence in ornamentation was found between spores produced by the studied species and those that grow in regions outside of the area under study.
format Articulo
Articulo
author Macluf, Carmen Cecilia
Morbelli, Marta Alicia
Giudice, Gabriela Elena
author_facet Macluf, Carmen Cecilia
Morbelli, Marta Alicia
Giudice, Gabriela Elena
author_sort Macluf, Carmen Cecilia
title Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
title_short Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
title_full Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
title_fullStr Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
title_full_unstemmed Microspore Morphology of Isoetes Species (Lycophyta) from Southern South America
title_sort microspore morphology of isoetes species (lycophyta) from southern south america
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/135356
work_keys_str_mv AT maclufcarmencecilia microsporemorphologyofisoetesspecieslycophytafromsouthernsouthamerica
AT morbellimartaalicia microsporemorphologyofisoetesspecieslycophytafromsouthernsouthamerica
AT giudicegabrielaelena microsporemorphologyofisoetesspecieslycophytafromsouthernsouthamerica
bdutipo_str Repositorios
_version_ 1764820455265402880

Ejemplares similares