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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1111/j.1469-8137.2009.02767.x
|2 doi
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|a pubmed24n0622.xml
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Paun, Ovidiu
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Hybrid speciation in angiosperms
|b parental divergence drives ploidy
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| 264 |
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|c 2009
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 17.07.2009
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|a Date Revised 20.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Hybridization and polyploidy are now hypothesized to have regularly stimulated speciation in angiosperms, but individual or combined involvement of these two processes seems to involve significant differences in pathways of formation, establishment and evolutionary consequences of resulting lineages. We evaluate here the classical cytological hypothesis that ploidy in hybrid speciation is governed by the extent of chromosomal rearrangements among parental species. Within a phylogenetic framework, we calculate genetic divergence indices for 50 parental species pairs and use these indices as surrogates for the overall degree of genomic divergence (that is, as proxy for assessments of dissimilarity of the parental chromosomes). The results confirm that genomic differentiation between progenitor taxa influences the likelihood of diploid (homoploid) versus polyploid hybrid speciation because genetic divergence between parents of polyploids is found to be significantly greater than in the case of homoploid hybrid species. We argue that this asymmetric relationship may be reinforced immediately after hybrid formation, during stabilization and establishment. Underlying mechanisms potentially producing this pattern are discussed
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| 650 |
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|a Journal Article
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| 650 |
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4 |
|a Research Support, Non-U.S. Gov't
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| 700 |
1 |
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|a Forest, Félix
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fay, Michael F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chase, Mark W
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t The New phytologist
|d 1979
|g 182(2009), 2 vom: 01., Seite 507-518
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
1 |
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|g volume:182
|g year:2009
|g number:2
|g day:01
|g pages:507-518
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| 856 |
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|u http://dx.doi.org/10.1111/j.1469-8137.2009.02767.x
|3 Volltext
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|d 182
|j 2009
|e 2
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|h 507-518
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