Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating

Spatial separation of male and female reproductive structures (herkogamy) is a widespread floral trait that has traditionally been viewed as an adaptation that reduces the likelihood of self-pollination. Here we propose that increased herkoga- my may also influence another important aspect of plant...

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Detalhes bibliográficos
Autores: Medrano, Mónica, Requerey, R., Herrera, Carlos M., Karron, J.D.
Formato: artículo
Fecha de publicación:2012
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/55200
Acesso em linha:http://hdl.handle.net/10261/55200
Access Level:acceso abierto
Palavra-chave:Amaryllidaceae
Anther–stigma separation
Correlated paternity
mixed-mating system
Multiple paternity
outcrossing rate
style length.
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spelling Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed matingMedrano, MónicaRequerey, R.Herrera, Carlos M.Karron, J.D.AmaryllidaceaeAnther–stigma separationCorrelated paternitymixed-mating systemMultiple paternityoutcrossing ratestyle length.Spatial separation of male and female reproductive structures (herkogamy) is a widespread floral trait that has traditionally been viewed as an adaptation that reduces the likelihood of self-pollination. Here we propose that increased herkoga- my may also influence another important aspect of plant mating: the diversity of pollen donors siring seeds within fruits. We test this hypothesis in Narcissus longi- spathus, a wild daffodil species with extensive variation in anther–stigma separa- tion. To study the morphological basis of variation in herkogamy, floral measurements were undertaken in 16 populations of N. longispathus. We then quantified multilocus outcrossing rates and the correlation of outcrossed paternity in three of these populations sampled over several years. Mating system estimates were calculated for each population and year, and also separately for groups of plants that differed markedly in herkogamy within each population and year. In N. longispathus herkogamy was much more variable than other floral traits, and was more closely related to style length than to anther position. Averaged across populations and years, plants with high herkogamy had similar outcrossing rates (0.683) to plants with intermediate (0.648) or low herkogamy (0.590). However, a significant linear trend was found for correlation of outcrossed paternity, which increased monotonically from high herkogamy (0.221), through intermediate herk- ogamy (0.303) to low herkogamy (0.463) plants. The diversity of pollen donors sir- ing seeds of high herkogamy Narcissus flowers was thus consistently greater than the diversity of pollen donors siring seeds of low herkogamy flowers. Results of this study contribute to the emerging consensus that floral traits can simultaneously influence several aspects of plant mating system in complex ways, thus extending the traditional focus centred exclusively on patterns and relative importance of self- and cross-fertilisationPeer reviewedThieme201220122012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/55200reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/j.1438-8677.2012.00569.xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/552002026-05-22T06:33:51Z
dc.title.none.fl_str_mv Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
title Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
spellingShingle Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
Medrano, Mónica
Amaryllidaceae
Anther–stigma separation
Correlated paternity
mixed-mating system
Multiple paternity
outcrossing rate
style length.
title_short Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
title_full Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
title_fullStr Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
title_full_unstemmed Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
title_sort Herkogamy and mate diversity in the wild daffodil Narcissus longispathus: beyond the selfing–outcrossing paradigm in the evolution of mixed mating
dc.creator.none.fl_str_mv Medrano, Mónica
Requerey, R.
Herrera, Carlos M.
Karron, J.D.
author Medrano, Mónica
author_facet Medrano, Mónica
Requerey, R.
Herrera, Carlos M.
Karron, J.D.
author_role author
author2 Requerey, R.
Herrera, Carlos M.
Karron, J.D.
author2_role author
author
author
dc.subject.none.fl_str_mv Amaryllidaceae
Anther–stigma separation
Correlated paternity
mixed-mating system
Multiple paternity
outcrossing rate
style length.
topic Amaryllidaceae
Anther–stigma separation
Correlated paternity
mixed-mating system
Multiple paternity
outcrossing rate
style length.
description Spatial separation of male and female reproductive structures (herkogamy) is a widespread floral trait that has traditionally been viewed as an adaptation that reduces the likelihood of self-pollination. Here we propose that increased herkoga- my may also influence another important aspect of plant mating: the diversity of pollen donors siring seeds within fruits. We test this hypothesis in Narcissus longi- spathus, a wild daffodil species with extensive variation in anther–stigma separa- tion. To study the morphological basis of variation in herkogamy, floral measurements were undertaken in 16 populations of N. longispathus. We then quantified multilocus outcrossing rates and the correlation of outcrossed paternity in three of these populations sampled over several years. Mating system estimates were calculated for each population and year, and also separately for groups of plants that differed markedly in herkogamy within each population and year. In N. longispathus herkogamy was much more variable than other floral traits, and was more closely related to style length than to anther position. Averaged across populations and years, plants with high herkogamy had similar outcrossing rates (0.683) to plants with intermediate (0.648) or low herkogamy (0.590). However, a significant linear trend was found for correlation of outcrossed paternity, which increased monotonically from high herkogamy (0.221), through intermediate herk- ogamy (0.303) to low herkogamy (0.463) plants. The diversity of pollen donors sir- ing seeds of high herkogamy Narcissus flowers was thus consistently greater than the diversity of pollen donors siring seeds of low herkogamy flowers. Results of this study contribute to the emerging consensus that floral traits can simultaneously influence several aspects of plant mating system in complex ways, thus extending the traditional focus centred exclusively on patterns and relative importance of self- and cross-fertilisation
publishDate 2012
dc.date.none.fl_str_mv 2012
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/55200
url http://hdl.handle.net/10261/55200
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/j.1438-8677.2012.00569.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Thieme
publisher.none.fl_str_mv Thieme
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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