Interploidy hybridization in sympatric zones: the formation of Epidendrum fulgens x E. puniceoluteum hybrids (Epidendroideae, Orchidaceae)

dc.creatorMoraes, AP
dc.creatorChinaglia, M
dc.creatorPalma-Silva, C
dc.creatorPinheiro, F
dc.date2013
dc.dateOCT
dc.date2014-07-30T14:34:02Z
dc.date2015-11-26T16:35:23Z
dc.date2014-07-30T14:34:02Z
dc.date2015-11-26T16:35:23Z
dc.date.accessioned2018-03-28T23:17:50Z
dc.date.available2018-03-28T23:17:50Z
dc.identifierEcology And Evolution. Wiley-blackwell, v. 3, n. 11, n. 3824, n. 3837, 2013.
dc.identifier2045-7758
dc.identifierWOS:000325486000014
dc.identifier10.1002/ece3.752
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/60484
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/60484
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1271492
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionInterspecific hybridization is a primary cause of extensive morphological and chromosomal variation and plays an important role in plant species diversification. However, the role of interploidal hybridization in the formation of hybrid swarms is less clear. Epidendrum encompasses wide variation in chromosome number and lacks strong premating barriers, making the genus a good model for clarifying the role of chromosomes in postzygotic barriers in interploidal hybrids. In this sense, hybrids from the interploidal sympatric zone between E. fulgens (2n=2x=24) and E. puniceoluteum (2n=4x=56) were analyzed using cytogenetic techniques to elucidate the formation and establishment of interploidal hybrids. Hybrids were not a uniform group: two chromosome numbers were observed, with the variation being a consequence of severe hybrid meiotic abnormalities and backcrossing with E. puniceoluteum. The hybrids were triploids (2n=3x=38 and 40) and despite the occurrence of enormous meiotic problems associated with triploidy, the hybrids were able to backcross, producing successful hybrid individuals with broad ecological distributions. In spite of the nonpolyploidization of the hybrid, its formation is a long-term evolutionary process rather than a product of a recent disturbance, and considering other sympatric zones in Epidendrum, these events could be recurrent.
dc.description3
dc.description11
dc.description3824
dc.description3837
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFAPESP [2011/22215-3, 2012/22077-2, 2011/00608-3, 2009/52725-3, 2009/17411-8, 09/15052-0]
dc.languageen
dc.publisherWiley-blackwell
dc.publisherHoboken
dc.publisherEUA
dc.relationEcology And Evolution
dc.relationEcol. Evol.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectEpidendrum
dc.subjectGISH
dc.subjecthybrid zone
dc.subjectinterploidy crossing
dc.subjectkaryotype
dc.subjectorchids
dc.subjectplant speciation
dc.subjectDifferent Ploidy Levels
dc.subjectIn-situ Hybridization
dc.subjectReproductive Isolation
dc.subjectDactylorhiza Orchidaceae
dc.subjectPlant Speciation
dc.subjectMediterranean Orchids
dc.subjectParental Divergence
dc.subjectFlowering Plants
dc.subjectGenome Evolution
dc.subjectGene Flow
dc.titleInterploidy hybridization in sympatric zones: the formation of Epidendrum fulgens x E. puniceoluteum hybrids (Epidendroideae, Orchidaceae)
dc.typeArtículos de revistas


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