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Plant Systematics and Evolution

, Volume 168, Issue 1–2, pp 19–38 | Cite as

Phenotypic plasticity inCrepis tectorum (Asteraceae)

  • Stefan Andersson
Article

Abstract

Two experiments were carried out using two different approaches to compare populations ofCrepis tectorum (Asteraceae). One was based on a comparison of means of various vegetative and reproductive characters and another was based on a comparison of response patterns of the same characters in a series of environments. Population divergence within two earlier recognized form series, one from weed habitats and one from alvar habitats on Baltic islands, resulted in a partially overlapping pattern in cluster analyses based on character means. However, the pattern revealed by a comparison of the direction and amount of plastic response suggested that populations within the two form series had more similar response patterns than other combinations of populations. It was concluded that patterns of plasticity may provide useful additional information on the overall similarity among taxa. An hypothesis that plants in weed populations should exhibit a greater phenotypic response to the environments than plants in alvar populations was rejected.

Key words

Angiosperms Asteraceae Crepis tectorum Phenotypic plasticity morphometry norm of reaction 

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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Stefan Andersson
    • 1
  1. 1.Department of Systematic BotanyUniversity of LundLundSweden

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