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An allozyme study of sexual and vegetative regeneration in Hieracium pilosella L.

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Author

Summary, in English

Allozyme markers were used to fingerprint clones of the grassland plant Hieracium pilosella and, by inference, to estimate the relative importance of sexual and vegetative reproduction in a population. Field studies in populations of clonal plant species have often reported negligible or absent recruitment from seed. In contrast, studies of genetic markers have found substantial clonal diversity in populations, suggesting recruitment of new genets into established populations. Our results showed that H. pilosella regenerates from seed both within and between dense clonal patches. Two sites differing in environmental conditions were sampled in order to investigate how the balance between seed-derived and stolon-derived recruitment changes with biotic and abiotic stress. In a relatively drought-prone site on a south-facing slope, the balance was shifted towards recruitment from seed, compared to a mesic site in which vegetative regeneration was more important.

Publishing year

2007

Language

English

Pages

10-15

Publication/Series

Canadian Journal of Botany

Volume

85

Issue

1

Document type

Journal article

Publisher

Canadian Science Publishing, NRC Research Press

Topic

  • Ecology

Keywords

  • apomixis
  • clonal diversity
  • population
  • recruitment
  • vegetative regeneration

Status

Published

ISBN/ISSN/Other

  • ISSN: 0008-4026