Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower

The editor version is available at: http://www.amjbot.org/cgi/content/full/90/1/78

Detalles Bibliográficos
Autores: Sanzol Sanz, Javier, Rallo, Pilar, Herrero Romero, María
Tipo de recurso: artículo
Fecha de publicación:2003
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/4082
Acceso en línea:http://hdl.handle.net/10261/4082
Access Level:acceso abierto
Palabra clave:Pollen germination
Pyrus communis
Rosaceae
Stigma
Stigmatic receptivity
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spelling Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower Sanzol Sanz, Javier Rallo, Pilar Herrero Romero, María Pollen germination Pyrus communis Rosaceae Stigma Stigmatic receptivity The editor version is available at: http://www.amjbot.org/cgi/content/full/90/1/78 While stigma anatomy is well documented for a good number of species, little information is available on the acquisition and cessation of stigmatic receptivity. The aim of this work is to characterize the development of stigma receptivity, from anthesis to stigma degeneration, in the pentacarpellar pear (Pyrus communis) flower. Stigma development and stigmatic receptivity were monitored over two consecutive years, as the capacity of the stigmas to offer support for pollen germination and pollen tube growth. In an experiment where hand pollinations were delayed for specified times after anthesis, three different stigmatic developmental stages could be observed: (1) immature stigmas, which allow pollen adhesion but not hydration; (2) receptive stigmas, which allow proper pollen hydration and germination; and (3) degenerated stigmas, in which pollen hydrates and germinates properly, but pollen tube growth is impaired soon after germination. This developmental characterization showed that stigmas in different developmental stages coexist within a flower and that the acquisition and cessation of stigmatic receptivity by each carpel occur in a sequential manner. In this way, while the duration of stigmatic receptivity for each carpel is rather short, the flower has an expanded receptive period. This asynchronous period of receptivity for the different stigmas of a single flower is discussed as a strategy that could serve to maximize pollination resources under unreliable pollination conditions. J. Sanzol was supported by an INIA fellowship and financial support for this work was also provided by INIA (Project grants SC98-049 and RTA 01-103). Peer reviewed Botanical Society of America http://hdl.handle.net/10261/4082
title Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
spellingShingle Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
Sanzol Sanz, Javier
Pollen germination
Pyrus communis
Rosaceae
Stigma
Stigmatic receptivity
title_short Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
title_full Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
title_fullStr Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
title_full_unstemmed Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
title_sort Asynchronous development of stigmatic receptivity in the pear (Pyrus communis; Rosaceae) flower
author Sanzol Sanz, Javier
author_facet Sanzol Sanz, Javier
Rallo, Pilar
Herrero Romero, María
author_role author
author2 Rallo, Pilar
Herrero Romero, María
author2_role author
author
topic Pollen germination
Pyrus communis
Rosaceae
Stigma
Stigmatic receptivity
topic_facet Pollen germination
Pyrus communis
Rosaceae
Stigma
Stigmatic receptivity
description The editor version is available at: http://www.amjbot.org/cgi/content/full/90/1/78
publishDate 2003
format article
url http://hdl.handle.net/10261/4082
eu_rights_str_mv openAccess
publisher Botanical Society of America
institution Consejo Superior de Investigaciones Científicas (CSIC)
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
_version_ 1878430999763746816
publishDateSort 2003
author_browse Herrero Romero, María
Rallo, Pilar
Sanzol Sanz, Javier
publisherStr Botanical Society of America
score 6,924472

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