Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)

The seed morphology of three species belonging to the genus Bromheadia was analyzed under light and scanning electron microscopy. The seeds of B. cecieliae and B. truncata were studied for the first time. Differences in the qualitative and quantitative characteristics between the terrestrial B. finl...

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Detalles Bibliográficos
Autores: Ortúñez Rubio, Emma, Gamarra Gamarra, Roberto
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/706655
Acceso en línea:http://hdl.handle.net/10486/706655
https://dx.doi.org/10.3390/d15020195
Access Level:acceso abierto
Palabra clave:Testa Cells
Anticlinal Walls
Embryo
Terrestrial
Epiphyte
Biología y Biomedicina / Biología
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spelling Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)Ortúñez Rubio, EmmaGamarra Gamarra, RobertoTesta CellsAnticlinal WallsEmbryoTerrestrialEpiphyteBiología y Biomedicina / BiologíaThe seed morphology of three species belonging to the genus Bromheadia was analyzed under light and scanning electron microscopy. The seeds of B. cecieliae and B. truncata were studied for the first time. Differences in the qualitative and quantitative characteristics between the terrestrial B. finlaysoniana and the epiphytes B. cecieliae and B. truncata were observed, which were in concordance with the life form. Due to the variability of the seed shapes, a new methodology is proposed to analyze the distance between the embryo and the testa cells, with the aim of demonstrating the presence of air space within the seed. The method is compared to previous formulae used to measure free air space. Furthermore, a new measurement, the angle in twisted testa cells of epiphytic orchids, is proposed, to evaluate the degree of torsion in medial cells. Although the wide distribution of B. finlaysoniana could be related to the great buoyancy of their seeds in contrast to the limited distribution of B. cecieliae, we consider that environmental factors are more influential than the buoyancy of seeds when understanding the distribution of these taxa. Future studies on seeds morphology in orchid genera with terrestrial and epiphytic taxa will provide new insights into this researchMDPIDepartamento de Biología20232023-02-01research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/706655https://dx.doi.org/10.3390/d15020195reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7066552026-06-23T12:46:27Z
dc.title.none.fl_str_mv Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
title Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
spellingShingle Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
Ortúñez Rubio, Emma
Testa Cells
Anticlinal Walls
Embryo
Terrestrial
Epiphyte
Biología y Biomedicina / Biología
title_short Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
title_full Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
title_fullStr Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
title_full_unstemmed Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
title_sort Seed morphology, life form and distribution in three bromheadia species (Epidendroideae, Orchidaceae)
dc.creator.none.fl_str_mv Ortúñez Rubio, Emma
Gamarra Gamarra, Roberto
author Ortúñez Rubio, Emma
author_facet Ortúñez Rubio, Emma
Gamarra Gamarra, Roberto
author_role author
author2 Gamarra Gamarra, Roberto
author2_role author
dc.contributor.none.fl_str_mv Departamento de Biología
dc.subject.none.fl_str_mv Testa Cells
Anticlinal Walls
Embryo
Terrestrial
Epiphyte
Biología y Biomedicina / Biología
topic Testa Cells
Anticlinal Walls
Embryo
Terrestrial
Epiphyte
Biología y Biomedicina / Biología
description The seed morphology of three species belonging to the genus Bromheadia was analyzed under light and scanning electron microscopy. The seeds of B. cecieliae and B. truncata were studied for the first time. Differences in the qualitative and quantitative characteristics between the terrestrial B. finlaysoniana and the epiphytes B. cecieliae and B. truncata were observed, which were in concordance with the life form. Due to the variability of the seed shapes, a new methodology is proposed to analyze the distance between the embryo and the testa cells, with the aim of demonstrating the presence of air space within the seed. The method is compared to previous formulae used to measure free air space. Furthermore, a new measurement, the angle in twisted testa cells of epiphytic orchids, is proposed, to evaluate the degree of torsion in medial cells. Although the wide distribution of B. finlaysoniana could be related to the great buoyancy of their seeds in contrast to the limited distribution of B. cecieliae, we consider that environmental factors are more influential than the buoyancy of seeds when understanding the distribution of these taxa. Future studies on seeds morphology in orchid genera with terrestrial and epiphytic taxa will provide new insights into this research
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-02-01
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/706655
https://dx.doi.org/10.3390/d15020195
url http://hdl.handle.net/10486/706655
https://dx.doi.org/10.3390/d15020195
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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