You are in the accessibility menu

Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMendes-Rodrigues, Clesnan-
dc.contributor.authorSampaio, Diana Salles-
dc.contributor.authorCosta, Maria Eugenia-
dc.contributor.authorde Souza Caetano, Ana Paula-
dc.contributor.authorRanal, Marli Aparecida-
dc.contributor.authorBittencourt Junior, Nelson Sabino-
dc.contributor.authorOliveira, Paulo Eugenio-
dc.identifier.citationFlora. Jena: Elsevier Gmbh, Urban & Fischer Verlag, v. 207, n. 4, p. 264-274, 2012.-
dc.description.abstractPolyembryony seems to be advantageous to mother plants in detriment of their siblings which face competition since the beginning of seed development. This competition may limit the turnover of embryos into seedlings and their survival ability. We analysed polyembryony frequency and embryo to seedling turnover in three Handroanthus species with sporophytic apomixis. We tested if the embryo number per seed affected seed and embryo morphometry, seedling survival ability and seed individual survival (i.e. survival of at least one seedling per seed): The number of embryos per seed was compared with seedling number at different developmental stages. All 14 populations showed high frequencies of polyembryonic seeds (21-91%). As the number of embryos per seed increased (up to eight embryos/seed), there was a reduction of mean embryo mass, area, seedling length, individual seedling survival ability, and embryo to seedling turnover. There was also an increase in embryo morphological anomalies. However, enhanced seed individual survival was also observed. Thus, the high frequency of polyembryonic seeds and the increase in seed individual survival support the idea that polyembryony represents an alternative reproductive mechanism which can favours these species. (C) 2012 Elsevier GmbH. All rights reserved.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.publisherElsevier Gmbh, Urban & Fischer Verlag-
dc.sourceWeb of Science-
dc.subjectEmbryo to seedling turnoveren
dc.subjectMorphological anomaliesen
dc.subjectSeed germinationen
dc.subjectSporophytic apomixisen
dc.titlePolyembryony increases embryo and seedling mortality but also enhances seed individual survival in Handroanthus species (Bignoniaceae)en
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)-
dc.contributor.institutionUniversidade Estadual de Ponta Grossa (UEPG)-
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniversidade Federal de Uberlândia (UFU), Inst Biol, Programas Posgrad Biol Vegetal & Ecol & Conservac, BR-38400902 Uberlandia, MG, Brazil-
dc.description.affiliationUniversidade Estadual de Ponta Grossa (UEPG), Setor Ciencias Biol & Saude, Dept Biol Geral, Ponta Grossa, Parana, Brazil-
dc.description.affiliationUniv Estadual Campinas, Inst Biol, Campinas, SP, Brazil-
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Zool & Bot, Sao Jose do Rio Preto, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Zool & Bot, Sao Jose do Rio Preto, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.