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

In English

Författare

Summary, in 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.

Avdelning/ar

Publiceringsår

2002

Språk

Engelska

Sidor

207-211

Publikation/Tidskrift/Serie

Hereditas

Volym

136

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

Wiley-Blackwell

Ämne

  • Genetics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1601-5223