Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).

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Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae). Sporogenesis and gametogenesis of staminate and pistillate flowers of Allophylus edulis (Sapindaceae) were studied. Young anthers are similar in both types of flowers, they share the basic type of antheral d...

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Autores principales: González, Valeria V., Solís, Stella M., Ferrucci, María S.
Formato: Artículo revista
Lenguaje:Español
Publicado: Sociedad Argentina de Botánica 2014
Materias:
Allophylus edulis
Sapindaceae
esporogénesis
gametogénesis
sporogenesis
gametogenesis.
Acceso en línea:https://revistas.unc.edu.ar/index.php/BSAB/article/view/7846
Aporte de:
Revistas de la UNC de Universidad Nacional de Córdoba
id I10-R10-article-7846
record_format ojs
spelling I10-R10-article-78462023-07-06T23:25:09Z Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae). Anatomía reproductiva en flores estaminadas y pistiladas de Allophylus edulis (Sapindaceae) González, Valeria V. Solís, Stella M. Ferrucci, María S. Allophylus edulis Sapindaceae esporogénesis gametogénesis Allophylus edulis Sapindaceae sporogenesis gametogenesis. Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae). Sporogenesis and gametogenesis of staminate and pistillate flowers of Allophylus edulis (Sapindaceae) were studied. Young anthers are similar in both types of flowers, they share the basic type of antheral development; they consist of epidermis, endothecium, two middle layers and a secretory tapetum with binucleate cells. Microsporogenesis is normal, the division of pollen mother cells is simultaneous, and microspore tetrads are tetrahedral and decussate. The mature anther in staminate flowers presents epidermal cells thinned at stomio level, and endothecium cells with fibrillar thickenings. A single locule is formed in the theca by dissolution of the septum and pollen grains are two-celled when shed, these are triporate or tetraporate. The gynoecium is reduced to a tricarpelar, trilocular pistillode, with an ovule per locule. Ovule degeneration occurs before meiosis. The mature anthers of pistillate flowers differ anatomically from those of staminate flowers. The endothecium does not develop fibrillar thickenings, middle layers and tapetum generally are persisting, and the stomium is nonfunctional; anthers are indehiscent. The gynoecium in pistillate flowers, has a tricarpellary and trilocular ovary. Each locule contains an ovule hemianatropous, bitegmic and crassinucellate, with an obturator well developed, and the megagametophyte is of Polygonum type. Results are discussed in relation to the known to the family. Se estudió la esporogénesis y gametogénesis de flores estaminadas y pistiladas de Allophylus edulis (Sapindaceae). La anteras jóvenes son similares en ambos tipos de flores, comparten el tipo básico de desarrollo anteral; presentan epidermis, endotecio con células binucleadas, dos capas medias, y tapete de tipo secretor, con células binucleadas. La microsporogénesis es normal, la división de las células madres de las micrósporas es simultánea y las tétrades son tetraédricas y decusadas. La antera madura en flores estaminadas presenta células epidérmicas adelgazadas a nivel del estomio y el endotecio con engrosamientos fibrosos. Se aprecia un único lóculo por teca por disolución del septo y los granos de polen son liberados al estado 2-celular, éstos son triporados o tetraporados. El gineceo está reducido a un pistilodio tricarpelar, trilocular, con un óvulo por lóculo. El óvulo degenera antes de que ocurra la meiosis. La antera madura de las flores pistiladas difiere anatómicamente de la de las flores estaminadas. El endotecio no desarrolla engrosamientos fibrosos, las capas medias y el tapete persisten, y el estomio no es funcional; las anteras son indehiscentes. El gineceo de las flores pistiladas, presentan ovario tricarpelar y trilocular. Cada lóculo contiene un óvulo hemianátropo, bitegumentado y crasinucelado, con obturador desarrollado; el megagametófito es de tipo Polygonum. Se discuten los resultados obtenidos en relación a lo conocido para la familia. Sociedad Argentina de Botánica 2014-08-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo original application/pdf https://revistas.unc.edu.ar/index.php/BSAB/article/view/7846 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 49 No. 2 (2014): Julio; 207-216 Boletín de la Sociedad Argentina de Botánica; Vol. 49 Núm. 2 (2014): Julio; 207-216 Boletín de la Sociedad Argentina de Botánica; v. 49 n. 2 (2014): Julio; 207-216 1851-2372 0373-580X 10.31055/1851.2372.v49.n2 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/7846/8716
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-10
container_title_str Revistas de la UNC
language Español
format Artículo revista
topic Allophylus edulis
Sapindaceae
esporogénesis
gametogénesis
Allophylus edulis
Sapindaceae
sporogenesis
gametogenesis.
spellingShingle Allophylus edulis
Sapindaceae
esporogénesis
gametogénesis
Allophylus edulis
Sapindaceae
sporogenesis
gametogenesis.
González, Valeria V.
Solís, Stella M.
Ferrucci, María S.
Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).
topic_facet Allophylus edulis
Sapindaceae
esporogénesis
gametogénesis
Allophylus edulis
Sapindaceae
sporogenesis
gametogenesis.
author González, Valeria V.
Solís, Stella M.
Ferrucci, María S.
author_facet González, Valeria V.
Solís, Stella M.
Ferrucci, María S.
author_sort González, Valeria V.
title Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).
title_short Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).
title_full Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).
title_fullStr Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).
title_full_unstemmed Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae).
title_sort reproductive anatomy of staminate and pistillate flowers of allophylus edulis (sapindaceae).
description Reproductive anatomy of staminate and pistillate flowers of Allophylus edulis (Sapindaceae). Sporogenesis and gametogenesis of staminate and pistillate flowers of Allophylus edulis (Sapindaceae) were studied. Young anthers are similar in both types of flowers, they share the basic type of antheral development; they consist of epidermis, endothecium, two middle layers and a secretory tapetum with binucleate cells. Microsporogenesis is normal, the division of pollen mother cells is simultaneous, and microspore tetrads are tetrahedral and decussate. The mature anther in staminate flowers presents epidermal cells thinned at stomio level, and endothecium cells with fibrillar thickenings. A single locule is formed in the theca by dissolution of the septum and pollen grains are two-celled when shed, these are triporate or tetraporate. The gynoecium is reduced to a tricarpelar, trilocular pistillode, with an ovule per locule. Ovule degeneration occurs before meiosis. The mature anthers of pistillate flowers differ anatomically from those of staminate flowers. The endothecium does not develop fibrillar thickenings, middle layers and tapetum generally are persisting, and the stomium is nonfunctional; anthers are indehiscent. The gynoecium in pistillate flowers, has a tricarpellary and trilocular ovary. Each locule contains an ovule hemianatropous, bitegmic and crassinucellate, with an obturator well developed, and the megagametophyte is of Polygonum type. Results are discussed in relation to the known to the family.
publisher Sociedad Argentina de Botánica
publishDate 2014
url https://revistas.unc.edu.ar/index.php/BSAB/article/view/7846
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AT ferruccimarias reproductiveanatomyofstaminateandpistillateflowersofallophylusedulissapindaceae
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first_indexed 2022-08-20T01:20:16Z
last_indexed 2023-07-07T00:12:57Z
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