Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina

Autores
Etcheverry, A. V.; Alemán, M. M.; Figueroa Fleming, Trinidad; Gómez, C. A.; Lopez Spahr, Diego
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The repeated evolutionary transition from outcrossing to self-fertilization in angiosperms has been suggested to occur because selfing provides reproductive assurance. This transition is commonly associated with modifications of floral traits, among them herkogamy (the spatial separation between dehiscing anthers and the receptive stigma). Here, we investigate variation in levels of herkogamy in Desmodium incanum, D. pachyrrhizum, D. subsericeum and D. uncinatum, to determine the relationship between variation in this floral trait and self-pollen deposition. These species are self-compatible and bee-pollinated, with ornamental potential and may be used for forage given their high nutritional value. We studied natural populations located in Lerma Valley, Salta Province, Argentina. In January and February 2009, we marked and bagged 10 floral buds from 10 individual plants per species. The flowers were collected before their senescence; anther-stigma separation was measured immediately after collection with digital calipers (0.01 mm) as the distance between the surface of the stigma and the nearest anther. The stigmas were preserved in 70% ethanol. Pollen grains were counted under a microscope (10×) in the laboratory. There was significant variation in herkogamy levels among species. There was a negative correlation between anther-stigma distance and the number of self-pollen grains deposited on the stigma in isolated flowers. The variation in levels of herkogamy may represent a mechanism to ensure the production of some self-fertilized progeny in the absence of pollinators.
Fil: Etcheverry, A. V.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Alemán, M. M.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Figueroa Fleming, Trinidad. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina
Fil: Gómez, C. A.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Lopez Spahr, Diego. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina
Materia
Autonomous Self-Pollination
Herkogamy
Reproductive Assurance
Self-Pollen Load
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/13096
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern ArgentinaEtcheverry, A. V.Alemán, M. M.Figueroa Fleming, TrinidadGómez, C. A.Lopez Spahr, DiegoAutonomous Self-PollinationHerkogamyReproductive AssuranceSelf-Pollen Loadhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The repeated evolutionary transition from outcrossing to self-fertilization in angiosperms has been suggested to occur because selfing provides reproductive assurance. This transition is commonly associated with modifications of floral traits, among them herkogamy (the spatial separation between dehiscing anthers and the receptive stigma). Here, we investigate variation in levels of herkogamy in Desmodium incanum, D. pachyrrhizum, D. subsericeum and D. uncinatum, to determine the relationship between variation in this floral trait and self-pollen deposition. These species are self-compatible and bee-pollinated, with ornamental potential and may be used for forage given their high nutritional value. We studied natural populations located in Lerma Valley, Salta Province, Argentina. In January and February 2009, we marked and bagged 10 floral buds from 10 individual plants per species. The flowers were collected before their senescence; anther-stigma separation was measured immediately after collection with digital calipers (0.01 mm) as the distance between the surface of the stigma and the nearest anther. The stigmas were preserved in 70% ethanol. Pollen grains were counted under a microscope (10×) in the laboratory. There was significant variation in herkogamy levels among species. There was a negative correlation between anther-stigma distance and the number of self-pollen grains deposited on the stigma in isolated flowers. The variation in levels of herkogamy may represent a mechanism to ensure the production of some self-fertilized progeny in the absence of pollinators.Fil: Etcheverry, A. V.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Alemán, M. M.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Figueroa Fleming, Trinidad. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; ArgentinaFil: Gómez, C. A.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Lopez Spahr, Diego. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; ArgentinaInternational Society for Horticultural Science2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13096Etcheverry, A. V.; Alemán, M. M.; Figueroa Fleming, Trinidad; Gómez, C. A.; Lopez Spahr, Diego; Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina; International Society for Horticultural Science; Acta Horticulturae; 918; -1-2011; 183-1880567-75722406-6168enginfo:eu-repo/semantics/altIdentifier/doi/10.17660/ActaHortic.2011.918.22info:eu-repo/semantics/altIdentifier/url/http://www.actahort.org/books/918/918_22.htminfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:33Zoai:ri.conicet.gov.ar:11336/13096instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:58:33.878CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
title Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
spellingShingle Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
Etcheverry, A. V.
Autonomous Self-Pollination
Herkogamy
Reproductive Assurance
Self-Pollen Load
title_short Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
title_full Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
title_fullStr Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
title_full_unstemmed Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
title_sort Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina
dc.creator.none.fl_str_mv Etcheverry, A. V.
Alemán, M. M.
Figueroa Fleming, Trinidad
Gómez, C. A.
Lopez Spahr, Diego
author Etcheverry, A. V.
author_facet Etcheverry, A. V.
Alemán, M. M.
Figueroa Fleming, Trinidad
Gómez, C. A.
Lopez Spahr, Diego
author_role author
author2 Alemán, M. M.
Figueroa Fleming, Trinidad
Gómez, C. A.
Lopez Spahr, Diego
author2_role author
author
author
author
dc.subject.none.fl_str_mv Autonomous Self-Pollination
Herkogamy
Reproductive Assurance
Self-Pollen Load
topic Autonomous Self-Pollination
Herkogamy
Reproductive Assurance
Self-Pollen Load
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The repeated evolutionary transition from outcrossing to self-fertilization in angiosperms has been suggested to occur because selfing provides reproductive assurance. This transition is commonly associated with modifications of floral traits, among them herkogamy (the spatial separation between dehiscing anthers and the receptive stigma). Here, we investigate variation in levels of herkogamy in Desmodium incanum, D. pachyrrhizum, D. subsericeum and D. uncinatum, to determine the relationship between variation in this floral trait and self-pollen deposition. These species are self-compatible and bee-pollinated, with ornamental potential and may be used for forage given their high nutritional value. We studied natural populations located in Lerma Valley, Salta Province, Argentina. In January and February 2009, we marked and bagged 10 floral buds from 10 individual plants per species. The flowers were collected before their senescence; anther-stigma separation was measured immediately after collection with digital calipers (0.01 mm) as the distance between the surface of the stigma and the nearest anther. The stigmas were preserved in 70% ethanol. Pollen grains were counted under a microscope (10×) in the laboratory. There was significant variation in herkogamy levels among species. There was a negative correlation between anther-stigma distance and the number of self-pollen grains deposited on the stigma in isolated flowers. The variation in levels of herkogamy may represent a mechanism to ensure the production of some self-fertilized progeny in the absence of pollinators.
Fil: Etcheverry, A. V.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Alemán, M. M.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Figueroa Fleming, Trinidad. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina
Fil: Gómez, C. A.. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Lopez Spahr, Diego. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina
description The repeated evolutionary transition from outcrossing to self-fertilization in angiosperms has been suggested to occur because selfing provides reproductive assurance. This transition is commonly associated with modifications of floral traits, among them herkogamy (the spatial separation between dehiscing anthers and the receptive stigma). Here, we investigate variation in levels of herkogamy in Desmodium incanum, D. pachyrrhizum, D. subsericeum and D. uncinatum, to determine the relationship between variation in this floral trait and self-pollen deposition. These species are self-compatible and bee-pollinated, with ornamental potential and may be used for forage given their high nutritional value. We studied natural populations located in Lerma Valley, Salta Province, Argentina. In January and February 2009, we marked and bagged 10 floral buds from 10 individual plants per species. The flowers were collected before their senescence; anther-stigma separation was measured immediately after collection with digital calipers (0.01 mm) as the distance between the surface of the stigma and the nearest anther. The stigmas were preserved in 70% ethanol. Pollen grains were counted under a microscope (10×) in the laboratory. There was significant variation in herkogamy levels among species. There was a negative correlation between anther-stigma distance and the number of self-pollen grains deposited on the stigma in isolated flowers. The variation in levels of herkogamy may represent a mechanism to ensure the production of some self-fertilized progeny in the absence of pollinators.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/13096
Etcheverry, A. V.; Alemán, M. M.; Figueroa Fleming, Trinidad; Gómez, C. A.; Lopez Spahr, Diego; Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina; International Society for Horticultural Science; Acta Horticulturae; 918; -1-2011; 183-188
0567-7572
2406-6168
url http://hdl.handle.net/11336/13096
identifier_str_mv Etcheverry, A. V.; Alemán, M. M.; Figueroa Fleming, Trinidad; Gómez, C. A.; Lopez Spahr, Diego; Anther-stigma separation in Desmodium species (Papilionoideae-Fabaceae) from northwestern Argentina; International Society for Horticultural Science; Acta Horticulturae; 918; -1-2011; 183-188
0567-7572
2406-6168
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.17660/ActaHortic.2011.918.22
info:eu-repo/semantics/altIdentifier/url/http://www.actahort.org/books/918/918_22.htm
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv International Society for Horticultural Science
publisher.none.fl_str_mv International Society for Horticultural Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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