Limited evidence for allelopathic effects of giant hogweed on germination af native herbs

Wibke Wille; Jan Thiele; Emer A. Walker; Johannes Christian Kollmann

doi:10.1017/s096025851300007x

Limited evidence for allelopathic effects of giant hogweed on germination af native herbs

Wibke Wille, Jan Thiele, Emer A. Walker, Johannes Christian Kollmann

SOBI

9 Citationer (Scopus)

Abstract

Invasive alien plants often occur in monospecific stands with high density in the invaded range. Production of bioactive secondary metabolites in such stands could have allelopathic effects on germination of native species. We tested this component of the novel weapon hypothesis for Heracleum mantegazzianum, a prominent invader in Europe, using seeds of 11 native herbs exposed to soil or soil extracts from invaded stands, moist seeds or seed extracts of H. mantegazzianum. There was no effect of the various treatments on germination of most species, while germination was reduced in Urtica dioica on invaded soil, in Poa trivialis with H. mantegazzianum seed extract, and negative effects of the essential oil bergapten were found in three species. In P. trivialis the results of the seed extract were not supported by the experiment with added seeds of the invasive plant. Thus, there is limited evidence for allelopathic effects of the invasive H. mantegazzianum on germination of co-occurring native herbs.

Originalsprog	Engelsk
Tidsskrift	Seed Science Research
Vol/bind	23
Udgave nummer	02
Sider (fra-til)	157-162
Antal sider	6
ISSN	0960-2585
DOI	https://doi.org/10.1017/s096025851300007x
Status	Udgivet - jun. 2013

Adgang til dokumentet

10.1017/s096025851300007x

http://journals.cambridge.org/abstract_S096025851300007X

Citationsformater

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title = "Limited evidence for allelopathic effects of giant hogweed on germination af native herbs",

abstract = "Invasive alien plants often occur in monospecific stands with high density in the invaded range. Production of bioactive secondary metabolites in such stands could have allelopathic effects on germination of native species. We tested this component of the novel weapon hypothesis for Heracleum mantegazzianum, a prominent invader in Europe, using seeds of 11 native herbs exposed to soil or soil extracts from invaded stands, moist seeds or seed extracts of H. mantegazzianum. There was no effect of the various treatments on germination of most species, while germination was reduced in Urtica dioica on invaded soil, in Poa trivialis with H. mantegazzianum seed extract, and negative effects of the essential oil bergapten were found in three species. In P. trivialis the results of the seed extract were not supported by the experiment with added seeds of the invasive plant. Thus, there is limited evidence for allelopathic effects of the invasive H. mantegazzianum on germination of co-occurring native herbs.",

author = "Wibke Wille and Jan Thiele and Walker, {Emer A.} and Kollmann, {Johannes Christian}",

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T1 - Limited evidence for allelopathic effects of giant hogweed on germination af native herbs

AU - Wille, Wibke

AU - Thiele, Jan

AU - Walker, Emer A.

AU - Kollmann, Johannes Christian

PY - 2013/6

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N2 - Invasive alien plants often occur in monospecific stands with high density in the invaded range. Production of bioactive secondary metabolites in such stands could have allelopathic effects on germination of native species. We tested this component of the novel weapon hypothesis for Heracleum mantegazzianum, a prominent invader in Europe, using seeds of 11 native herbs exposed to soil or soil extracts from invaded stands, moist seeds or seed extracts of H. mantegazzianum. There was no effect of the various treatments on germination of most species, while germination was reduced in Urtica dioica on invaded soil, in Poa trivialis with H. mantegazzianum seed extract, and negative effects of the essential oil bergapten were found in three species. In P. trivialis the results of the seed extract were not supported by the experiment with added seeds of the invasive plant. Thus, there is limited evidence for allelopathic effects of the invasive H. mantegazzianum on germination of co-occurring native herbs.

AB - Invasive alien plants often occur in monospecific stands with high density in the invaded range. Production of bioactive secondary metabolites in such stands could have allelopathic effects on germination of native species. We tested this component of the novel weapon hypothesis for Heracleum mantegazzianum, a prominent invader in Europe, using seeds of 11 native herbs exposed to soil or soil extracts from invaded stands, moist seeds or seed extracts of H. mantegazzianum. There was no effect of the various treatments on germination of most species, while germination was reduced in Urtica dioica on invaded soil, in Poa trivialis with H. mantegazzianum seed extract, and negative effects of the essential oil bergapten were found in three species. In P. trivialis the results of the seed extract were not supported by the experiment with added seeds of the invasive plant. Thus, there is limited evidence for allelopathic effects of the invasive H. mantegazzianum on germination of co-occurring native herbs.

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DO - 10.1017/s096025851300007x

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