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Inbreeding depression in a rare plant, Scabiosa canescens (Dipsacaceae)

Author:
  • Stefan Andersson
  • P Waldmann
Publishing year: 2002
Language: English
Pages: 207-211
Publication/Series: Hereditas
Volume: 136
Issue: 3
Document type: Journal article
Publisher: Wiley-Blackwell

Abstract english

Plants from a population of Scabiosa canescens, a locally rare species with a narrow ecological amplitude, were raised under uniform growth conditions to examine the phenotypic effects of one generation selfing and outcrossing. Particular attention was given to direct components of fitness (seedling biomass, rosette leaf number, head number, flower number per head), but two morphological characters (plant height, flower size) were also considered. Estimates of inbreeding depression (delta), adjusted for maternal effects and lack of balance, were compared and tested for significance using randomization and bootstrap procedures. Inbreeding significantly depressed several characters during both early and late stages of the life cycle, with delta ranging from 0.14 (flower size) to 0.37 (seedling biomass). Based on these and other results, we propose that S. canescens is susceptible to inbreeding and that the genetic basis of inbreeding depression varies across life stages.

Keywords

  • Genetics

Other

Published
  • ISSN: 1601-5223
Stefan Andersson
E-mail: stefan [dot] andersson [at] biol [dot] lu [dot] se

Professor

Biodiversity

+46 46 222 44 08

E-A322

50

Research group

Plant Biology

Projects

 

Doctoral students and Postdocs

PhD students, main supervisor

Gróa Valgerdur Ingimudardóttir

Downloads & links

CV (pdf; 19 kb)

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