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Genetic variation, disequilibrium and natural selection on reproductive traits in Allium vineale

Ceplitis, Alf LU and Bengtsson, Bengt Olle LU (2004) In Journal of Evolutionary Biology 17(2). p.302-311
Abstract
Bulbils and seeds collected from Allium vineale plants from natural populations were grown under uniform conditions. The bulbil-derived offspring represented the parental generation, whereas the seed-derived offspring represented the sexually produced offspring generation. Molecular markers were used to identify maternal genets. Variation in traits determining the allocation to sexual and asexual reproduction was partitioned among genets and ramet families in the parental and offspring generations. From observations of a release of genetic variation and slippage in the mean phenotype in the offspring generation, we inferred that there exists extensive genetic disequilibrium for reproductive traits in A. vineale populations, that most of... (More)
Bulbils and seeds collected from Allium vineale plants from natural populations were grown under uniform conditions. The bulbil-derived offspring represented the parental generation, whereas the seed-derived offspring represented the sexually produced offspring generation. Molecular markers were used to identify maternal genets. Variation in traits determining the allocation to sexual and asexual reproduction was partitioned among genets and ramet families in the parental and offspring generations. From observations of a release of genetic variation and slippage in the mean phenotype in the offspring generation, we inferred that there exists extensive genetic disequilibrium for reproductive traits in A. vineale populations, that most of the genetic variance is because of dominance effects, and that natural selection favours a reduced allocation to sexual reproduction. No genetic correlation between sexual and asexual allocation traits was found. We discuss the implications of these results with respect to the evolution of a mixed reproductive system in A. vineale. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
clonal plants, Allium vineale, disequilibrium, quantitative genetics, natural selection, sexual reproduction
in
Journal of Evolutionary Biology
volume
17
issue
2
pages
302 - 311
publisher
John Wiley & Sons
external identifiers
  • pmid:15009264
  • wos:000188990500009
  • scopus:1542288916
ISSN
1420-9101
DOI
10.1046/j.1420-9101.2003.00678.x
language
English
LU publication?
yes
id
caf7e14c-3067-4b12-821e-c6e2bb48302f (old id 287048)
date added to LUP
2007-10-17 16:32:39
date last changed
2017-10-01 03:36:39
@article{caf7e14c-3067-4b12-821e-c6e2bb48302f,
  abstract     = {Bulbils and seeds collected from Allium vineale plants from natural populations were grown under uniform conditions. The bulbil-derived offspring represented the parental generation, whereas the seed-derived offspring represented the sexually produced offspring generation. Molecular markers were used to identify maternal genets. Variation in traits determining the allocation to sexual and asexual reproduction was partitioned among genets and ramet families in the parental and offspring generations. From observations of a release of genetic variation and slippage in the mean phenotype in the offspring generation, we inferred that there exists extensive genetic disequilibrium for reproductive traits in A. vineale populations, that most of the genetic variance is because of dominance effects, and that natural selection favours a reduced allocation to sexual reproduction. No genetic correlation between sexual and asexual allocation traits was found. We discuss the implications of these results with respect to the evolution of a mixed reproductive system in A. vineale.},
  author       = {Ceplitis, Alf and Bengtsson, Bengt Olle},
  issn         = {1420-9101},
  keyword      = {clonal plants,Allium vineale,disequilibrium,quantitative genetics,natural selection,sexual reproduction},
  language     = {eng},
  number       = {2},
  pages        = {302--311},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Evolutionary Biology},
  title        = {Genetic variation, disequilibrium and natural selection on reproductive traits in Allium vineale},
  url          = {http://dx.doi.org/10.1046/j.1420-9101.2003.00678.x},
  volume       = {17},
  year         = {2004},
}