Pollen morphology of Staelia s.l. (Rubiaceae).

Pollen morphology of Staelia s.l. (Rubiaceae). This paper deals the study of the pollen grains of Staelia s.l. Currently, it have been studied only four of 25 species of this taxon. We carried out an analysis of the pollen morphology of all species belonging to the four genera of Staelia s.l.: Antho...

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Autores principales: Salas, Roberto M., Cabral, Elsa L.
Formato: Artículo revista
Lenguaje:Español
Publicado: Sociedad Argentina de Botánica 2014
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Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/7821
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spelling I10-R325-article-78212024-09-03T22:47:28Z Pollen morphology of Staelia s.l. (Rubiaceae). Morfología polínica de Staelia s.l. (Rubiaceae) . Salas, Roberto M. Cabral, Elsa L. Anthospermopsis multiaperturado Planaltina polen Spermacoceae Tessiera Anthospermopsis multiaperturate Planaltina pollen Spermacoceae Tessiera. Pollen morphology of Staelia s.l. (Rubiaceae). This paper deals the study of the pollen grains of Staelia s.l. Currently, it have been studied only four of 25 species of this taxon. We carried out an analysis of the pollen morphology of all species belonging to the four genera of Staelia s.l.: Anthospermopsis, Planaltina, Tessiera and Staelia s.s. As result, we found a remarkable homogeneity of pollinic characters within each genus, which is evidenced in a single pollen type for each taxon, except for Anthospermopsis. Tessiera and Planaltina are differentiated from Staelia by the pollen size (P=42-75, E=50-78.4 vs. P=21-34, E=20-30.8 µm) and length of colpi (LC/P= 0.22-0.31 vs. LC/P=0.57-0.77 µm), whereas the pollen of Anthospermopsis is virtually indistinguishable from the remaining species of Staelia. Furthermore, the three pollen types are very similar to those stated for African and Australian Spermacoce species. The pollinic type of Staelia is also shared with the monospecific genus Emmeorhiza. For these reasons, we proposed to extend the classification of the pollen types previously described for Borreria and Spermacoce (designated by Arabic numbers, 1-20) to the genera studied here. The pollen grains are described and illustrated by images of scanning electron microscope. The lower surface of the nexine is described through broken grains. Este trabajo trata el estudio de los granos de polen de Staelia s.l. Actualmente, es un grupo escasamente estudiado en este aspecto, ya que solo se describieron cuatro de 25 especies. Se estudió el polen de todas las especies de Anthospermopsis, Planaltina, Tessiera y Staelia s.s. Como resultado, se encontró una notable homogeneidad de caracteres polínicos dentro de cada género, que se pone de manifiesto en un único tipo de polen para cada taxón, excepto para Anthospermopsis. Tessiera y Planaltina se diferencian de Staelia por el tamaño de los granos (P=42-75 y E=50-78,4 vs. P=21-34 y E=20-30,8 µm) y longitud de los colpos (LC/P= 0,22-0,31 vs. 0,57-0,77 µm), mientras que Anthospermopsis es prácticamente indistinguible de las otras especies de Staelia. Además, los tres tipos polínicos son similares a los establecidos para especies de Spermacoce de África y Australia. El tipo polínico de Staelia también es compartido con Emmeorhiza. Por estas razones, se propone incorporar a la clasificación de los tipos polínicos descritos anteriormente para Borreria y Spermacoce (designados con números arábigos, del 1-20) a los géneros aquí estudiados. Los tres tipos polínicos son descritos e ilustrados mediante imágenes de microscopio electrónico de barrido. El interior de la nexina es también analizada a partir de granos rotos. Sociedad Argentina de Botánica 2014-07-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/7821 10.31055/1851.2372.v49.n1.7821 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 49 No. 1 (2014): Abril; 51-65 Boletín de la Sociedad Argentina de Botánica; Vol. 49 Núm. 1 (2014): Abril; 51-65 Boletín de la Sociedad Argentina de Botánica; v. 49 n. 1 (2014): Abril; 51-65 1851-2372 0373-580X 10.31055/1851.2372.v49.n1 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/7821/8691
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-325
container_title_str Boletín de la Sociedad Argentina de Botánica
language Español
format Artículo revista
topic Anthospermopsis
multiaperturado
Planaltina
polen
Spermacoceae
Tessiera
Anthospermopsis
multiaperturate
Planaltina
pollen
Spermacoceae
Tessiera.
spellingShingle Anthospermopsis
multiaperturado
Planaltina
polen
Spermacoceae
Tessiera
Anthospermopsis
multiaperturate
Planaltina
pollen
Spermacoceae
Tessiera.
Salas, Roberto M.
Cabral, Elsa L.
Pollen morphology of Staelia s.l. (Rubiaceae).
topic_facet Anthospermopsis
multiaperturado
Planaltina
polen
Spermacoceae
Tessiera
Anthospermopsis
multiaperturate
Planaltina
pollen
Spermacoceae
Tessiera.
author Salas, Roberto M.
Cabral, Elsa L.
author_facet Salas, Roberto M.
Cabral, Elsa L.
author_sort Salas, Roberto M.
title Pollen morphology of Staelia s.l. (Rubiaceae).
title_short Pollen morphology of Staelia s.l. (Rubiaceae).
title_full Pollen morphology of Staelia s.l. (Rubiaceae).
title_fullStr Pollen morphology of Staelia s.l. (Rubiaceae).
title_full_unstemmed Pollen morphology of Staelia s.l. (Rubiaceae).
title_sort pollen morphology of staelia s.l. (rubiaceae).
description Pollen morphology of Staelia s.l. (Rubiaceae). This paper deals the study of the pollen grains of Staelia s.l. Currently, it have been studied only four of 25 species of this taxon. We carried out an analysis of the pollen morphology of all species belonging to the four genera of Staelia s.l.: Anthospermopsis, Planaltina, Tessiera and Staelia s.s. As result, we found a remarkable homogeneity of pollinic characters within each genus, which is evidenced in a single pollen type for each taxon, except for Anthospermopsis. Tessiera and Planaltina are differentiated from Staelia by the pollen size (P=42-75, E=50-78.4 vs. P=21-34, E=20-30.8 µm) and length of colpi (LC/P= 0.22-0.31 vs. LC/P=0.57-0.77 µm), whereas the pollen of Anthospermopsis is virtually indistinguishable from the remaining species of Staelia. Furthermore, the three pollen types are very similar to those stated for African and Australian Spermacoce species. The pollinic type of Staelia is also shared with the monospecific genus Emmeorhiza. For these reasons, we proposed to extend the classification of the pollen types previously described for Borreria and Spermacoce (designated by Arabic numbers, 1-20) to the genera studied here. The pollen grains are described and illustrated by images of scanning electron microscope. The lower surface of the nexine is described through broken grains.
publisher Sociedad Argentina de Botánica
publishDate 2014
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/7821
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first_indexed 2024-09-03T22:49:36Z
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