Polyembryony increases embryo and seedling mortality but also enhances seed individual survival in Handroanthus species (Bignoniaceae)

dc.creatorMendes-Rodrigues, C
dc.creatorSampaio, DS
dc.creatorCosta, ME
dc.creatorCaetano, APD
dc.creatorRanal, MA
dc.creatorBittencourt, NS
dc.creatorOliveira, PE
dc.date2012
dc.date2014-07-30T18:09:47Z
dc.date2015-11-26T17:43:39Z
dc.date2014-07-30T18:09:47Z
dc.date2015-11-26T17:43:39Z
dc.date.accessioned2018-03-29T00:25:43Z
dc.date.available2018-03-29T00:25:43Z
dc.identifierFlora. Elsevier Gmbh, Urban & Fischer Verlag, v. 207, n. 4, n. 264, n. 274, 2012.
dc.identifier0367-2530
dc.identifierWOS:000304898500004
dc.identifier10.1016/j.flora.2011.10.008
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/70679
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/70679
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287647
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionPolyembryony 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.
dc.description207
dc.description4
dc.description264
dc.description274
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherElsevier Gmbh, Urban & Fischer Verlag
dc.publisherJena
dc.publisherAlemanha
dc.relationFlora
dc.relationFlora
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectCompetition
dc.subjectEmbryo to seedling turnover
dc.subjectMorphological anomalies
dc.subjectSeed germination
dc.subjectSporophytic apomixis
dc.subjectTabebuia
dc.subjectVine Vincetoxicum-rossicum
dc.subjectActing Self-incompatibility
dc.subjectGenetic-heterogeneity
dc.subjectPostpollination Events
dc.subjectTabebuia Bignoniaceae
dc.subjectReproductive-biology
dc.subjectApomixis
dc.subjectBombacaceae
dc.subjectGermination
dc.subjectMelastomataceae
dc.titlePolyembryony increases embryo and seedling mortality but also enhances seed individual survival in Handroanthus species (Bignoniaceae)
dc.typeArtículos de revistas


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