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Effects of soil pH and phosphorus on in vitro pollen competitive ability and sporophytic traits in clones of Viola tricolor

Lankinen, Åsa LU (2000) In International Journal of Plant Sciences 161(6). p.885-893
Abstract
Greenhouse-grown clones of Viola tricolor were used to evaluate the importance of genetic effects on in vit ro pollen tube growth rate in relation to the influence of two environmental soil factors-pH and phosphorus content. After 1 mo in different soil treatments, individual pollen tube growth rate was affected by a genotype by phosphorus interaction, while it was unaffected by either main effects. Though individuals differed in their response to phosphorus availability, the rank order of pollen donors remained consistent between treatments; i.e., the pollen donors with the highest pollen tube growth rate were the same in all soil conditions. Sporophytic traits were also affected by a genotype by phosphorus interaction. The response of... (More)
Greenhouse-grown clones of Viola tricolor were used to evaluate the importance of genetic effects on in vit ro pollen tube growth rate in relation to the influence of two environmental soil factors-pH and phosphorus content. After 1 mo in different soil treatments, individual pollen tube growth rate was affected by a genotype by phosphorus interaction, while it was unaffected by either main effects. Though individuals differed in their response to phosphorus availability, the rank order of pollen donors remained consistent between treatments; i.e., the pollen donors with the highest pollen tube growth rate were the same in all soil conditions. Sporophytic traits were also affected by a genotype by phosphorus interaction. The response of pollen growth and sporophytic traits to soil phosphorus content were correlated within individuals in the high pH treatments. These results, in combination with a high value of clonal repeatability of pollen tube growth rate, indicate that pollen competitive ability has a genetic basis in this species. One prerequisite for this trait to have evolutionary effects on male fitness is thus fulfilled. Furthermore, if the response to phosphorus among pollen donors is more pronounced under natural conditions, variation in this environmental factor within populations has the potential to maintain some genetic Variation in pollen tube growth rate even if this trait is constantly selected. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
pollen tube growth rate., pollen competition, phenotypic plasticity, male fitness, genotype by environment interactions, gametophytic selection
in
International Journal of Plant Sciences
volume
161
issue
6
pages
885 - 893
publisher
University of Chicago Press
external identifiers
  • scopus:0033710264
ISSN
1058-5893
language
English
LU publication?
yes
id
0c0c83b2-fcf8-4a00-8104-c528e81e4b43 (old id 147667)
alternative location
http://www.jstor.org/stable/pdfplus/3079999.pdf
date added to LUP
2007-07-03 13:30:33
date last changed
2017-05-14 04:16:34
@article{0c0c83b2-fcf8-4a00-8104-c528e81e4b43,
  abstract     = {Greenhouse-grown clones of Viola tricolor were used to evaluate the importance of genetic effects on in vit ro pollen tube growth rate in relation to the influence of two environmental soil factors-pH and phosphorus content. After 1 mo in different soil treatments, individual pollen tube growth rate was affected by a genotype by phosphorus interaction, while it was unaffected by either main effects. Though individuals differed in their response to phosphorus availability, the rank order of pollen donors remained consistent between treatments; i.e., the pollen donors with the highest pollen tube growth rate were the same in all soil conditions. Sporophytic traits were also affected by a genotype by phosphorus interaction. The response of pollen growth and sporophytic traits to soil phosphorus content were correlated within individuals in the high pH treatments. These results, in combination with a high value of clonal repeatability of pollen tube growth rate, indicate that pollen competitive ability has a genetic basis in this species. One prerequisite for this trait to have evolutionary effects on male fitness is thus fulfilled. Furthermore, if the response to phosphorus among pollen donors is more pronounced under natural conditions, variation in this environmental factor within populations has the potential to maintain some genetic Variation in pollen tube growth rate even if this trait is constantly selected.},
  author       = {Lankinen, Åsa},
  issn         = {1058-5893},
  keyword      = {pollen tube growth rate.,pollen competition,phenotypic plasticity,male fitness,genotype by environment interactions,gametophytic selection},
  language     = {eng},
  number       = {6},
  pages        = {885--893},
  publisher    = {University of Chicago Press},
  series       = {International Journal of Plant Sciences},
  title        = {Effects of soil pH and phosphorus on in vitro pollen competitive ability and sporophytic traits in clones of Viola tricolor},
  volume       = {161},
  year         = {2000},
}