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Geographic variation in floral traits is associated with environmental and genetic differences among populations of the mixed mating species Collinsia heterophylla (Plantaginaceae)

Lankinen, Åsa LU ; Madjidian, Josefin A. LU and Andersson, Stefan LU (2017) In Botany2008-01-01+01:00 95(2). p.121-128
Abstract

Relatively few studies have investigated how geography, environmental factors, and genetics affect floral trait variation. We used mixed-mating Collinsia heterophylla Buist to explore variation in a suite of floral traits related to mating system in populations representing four geographic regions of California, USA, and relate this variation to geography, climatic factors, and local site characteristics. We evaluated the environmental vs. genetic trait variability in the greenhouse. Stage of anther–stigma contact correlated positively with temperature, stage of stigma receptivity was negatively associated with vegetation cover, and flower size differed among populations without any clear relation to environmental factors. Greenhouse... (More)

Relatively few studies have investigated how geography, environmental factors, and genetics affect floral trait variation. We used mixed-mating Collinsia heterophylla Buist to explore variation in a suite of floral traits related to mating system in populations representing four geographic regions of California, USA, and relate this variation to geography, climatic factors, and local site characteristics. We evaluated the environmental vs. genetic trait variability in the greenhouse. Stage of anther–stigma contact correlated positively with temperature, stage of stigma receptivity was negatively associated with vegetation cover, and flower size differed among populations without any clear relation to environmental factors. Greenhouse data indicated heritability for stage of anther– stigma contact, flower size, and time to flowering, and positive correlations between field and greenhouse for stage of stigma receptivity and flower size; however, stage of anther–stigma contact showed a high degree of environmental influence. Stage of anther–stigma contact covaried positively with stage of stigma receptivity and flower size across maternal families, indicating genetic correlations between traits. In conclusion, phenotypic floral variation within mixed-mating C. heterophylla is mostly determined by a genetic component. Geography, environment, and genetics affect traits differently, suggesting that ecological and evolutionary processes contribute to shaping variability in mating system-related traits.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Climate, Genetic correlation, Heritability, Mating system evolution, Phenotypic plasticity
in
Botany2008-01-01+01:00
volume
95
issue
2
pages
8 pages
publisher
Canadian Science Publishing, NRC Research Press
external identifiers
  • scopus:85012104654
  • wos:000395447200002
ISSN
1916-2804
DOI
10.1139/cjb-2016-0014
language
English
LU publication?
yes
id
a0a6f815-04a3-494a-960b-609d16d4bf1b
date added to LUP
2017-02-23 11:41:50
date last changed
2018-01-07 11:52:24
@article{a0a6f815-04a3-494a-960b-609d16d4bf1b,
  abstract     = {<p>Relatively few studies have investigated how geography, environmental factors, and genetics affect floral trait variation. We used mixed-mating Collinsia heterophylla Buist to explore variation in a suite of floral traits related to mating system in populations representing four geographic regions of California, USA, and relate this variation to geography, climatic factors, and local site characteristics. We evaluated the environmental vs. genetic trait variability in the greenhouse. Stage of anther–stigma contact correlated positively with temperature, stage of stigma receptivity was negatively associated with vegetation cover, and flower size differed among populations without any clear relation to environmental factors. Greenhouse data indicated heritability for stage of anther– stigma contact, flower size, and time to flowering, and positive correlations between field and greenhouse for stage of stigma receptivity and flower size; however, stage of anther–stigma contact showed a high degree of environmental influence. Stage of anther–stigma contact covaried positively with stage of stigma receptivity and flower size across maternal families, indicating genetic correlations between traits. In conclusion, phenotypic floral variation within mixed-mating C. heterophylla is mostly determined by a genetic component. Geography, environment, and genetics affect traits differently, suggesting that ecological and evolutionary processes contribute to shaping variability in mating system-related traits.</p>},
  author       = {Lankinen, Åsa and Madjidian, Josefin A. and Andersson, Stefan},
  issn         = {1916-2804},
  keyword      = {Climate,Genetic correlation,Heritability,Mating system evolution,Phenotypic plasticity},
  language     = {eng},
  number       = {2},
  pages        = {121--128},
  publisher    = {Canadian Science Publishing, NRC Research Press},
  series       = {Botany2008-01-01+01:00},
  title        = {Geographic variation in floral traits is associated with environmental and genetic differences among populations of the mixed mating species Collinsia heterophylla (Plantaginaceae)},
  url          = {http://dx.doi.org/10.1139/cjb-2016-0014},
  volume       = {95},
  year         = {2017},
}