An allozyme study of sexual and vegetative regeneration in Hieracium pilosella L.
(2007) In Canadian Journal of Botany 85(1). p.10-15- Abstract
- 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... (More)
- 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. (Less)
- Abstract (Swedish)
- Abstract in French
Afin d’évaluer l’importance relative de la reproduction sexuelle et végétative dans les populations d’une plante de prairie, l’Hieracium pilosella L., les auteurs ont utilisé des marqueurs allozymiques permettant d’en identifier les clones. Les études conduites aux champs, sur les populations d’espèces de plantes clonales, ont souvent fait état de recrutement absent ou négligeable, à partir de semences. Au contraire, l’étude de marqueurs génétiques montrent une diversité clonale substantielle dans les populations, ce qui suggère le recrutement de nouveaux genets, dans les populations établies. Les auteurs ont observé que l’H. pilosella se régénère à partir de graines, à la fois dans et entre les denses... (More) - Abstract in French
Afin d’évaluer l’importance relative de la reproduction sexuelle et végétative dans les populations d’une plante de prairie, l’Hieracium pilosella L., les auteurs ont utilisé des marqueurs allozymiques permettant d’en identifier les clones. Les études conduites aux champs, sur les populations d’espèces de plantes clonales, ont souvent fait état de recrutement absent ou négligeable, à partir de semences. Au contraire, l’étude de marqueurs génétiques montrent une diversité clonale substantielle dans les populations, ce qui suggère le recrutement de nouveaux genets, dans les populations établies. Les auteurs ont observé que l’H. pilosella se régénère à partir de graines, à la fois dans et entre les denses colonies clonales. Ils ont échantillonné deux sites, différents par leurs conditions environnementales, afin d’examiner comment la balance entre les recrutements dérivés de graines et de stolons, se modifient selon les stress biotiques et abiotiques. Sur le site relativement sensible à la sécheresse, soit une pente exposée au sud, la balance se déplace en faveur du recrutement par graines, comparativement au site mésique où la régénération végétative est plus importante. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/636263
- author
- Bruun, Hans Henrik LU ; Scheepens, J.F. and Tyler, Torbjörn LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- apomixis, clonal diversity, population, recruitment, vegetative regeneration
- in
- Canadian Journal of Botany
- volume
- 85
- issue
- 1
- pages
- 10 - 15
- publisher
- Canadian Science Publishing, NRC Research Press
- external identifiers
-
- wos:000246157000002
- scopus:34249342234
- ISSN
- 0008-4026
- DOI
- 10.1139/B06-140
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)
- id
- bd4b625d-2134-44d8-8cca-61ff31c45657 (old id 636263)
- date added to LUP
- 2016-04-01 12:03:50
- date last changed
- 2022-01-26 22:18:25
@article{bd4b625d-2134-44d8-8cca-61ff31c45657,
abstract = {{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.}},
author = {{Bruun, Hans Henrik and Scheepens, J.F. and Tyler, Torbjörn}},
issn = {{0008-4026}},
keywords = {{apomixis; clonal diversity; population; recruitment; vegetative regeneration}},
language = {{eng}},
number = {{1}},
pages = {{10--15}},
publisher = {{Canadian Science Publishing, NRC Research Press}},
series = {{Canadian Journal of Botany}},
title = {{An allozyme study of sexual and vegetative regeneration in Hieracium pilosella L.}},
url = {{http://dx.doi.org/10.1139/B06-140}},
doi = {{10.1139/B06-140}},
volume = {{85}},
year = {{2007}},
}