Article (Scientific journals)
Effects of seed traits variation on seedling performance of the invasive weed, Ambrosia artemisiifolia L.
Ortmans, William; Mahy, Grégory; Monty, Arnaud
2016In Acta Oecologica, 71
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Keywords :
Achene variability; Competitive ability; Cotyledon area; Phenotypic plasticity; Seed colour; Seed mass
Abstract :
[en] Seedling performance can determine the survival of a juvenile plant and impact adult plant performance. Understanding the factors that may impact seedling performance is thus critical, especially for annuals, opportunists or invasive plant species. Seedling performance can vary among mothers or populations in response to environmental conditions or under the influence of seed traits. However, very few studies have investigated seed traits variations and their consequences on seedling performance. Specifically, the following questions have been addressed by this work: 1) How the seed traits of the invasive Ambrosia artemisiifolia L. vary among mothers and populations, as well as along the latitude; 2) How do seed traits influence seedling performance; 3) Is the influence on seedlings temperature dependent. With seeds from nine Western Europe ruderal populations, seed traits that can influence seedling development were measured. The seeds were sown into growth chambers with warmer or colder temperature treatments. During seedling growth, performance-related traits were measured. A high variability in seed traits was highlighted. Variation was determined by the mother identity and population, but not latitude. Together, the temperature, population and the identity of the mother had an effect on seedling performance. Seed traits had a relative impact on seedling performance, but this did not appear to be temperature dependent. Seedling performance exhibited a strong plastic response to the temperature, was shaped by the identity of the mother and the population, and was influenced by a number of seed traits.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Ortmans, William ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Mahy, Grégory ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Monty, Arnaud ;  Université de Liège > Ingénierie des biosystèmes (Biose) > Biodiversité et Paysage
Language :
English
Title :
Effects of seed traits variation on seedling performance of the invasive weed, Ambrosia artemisiifolia L.
Alternative titles :
[fr] Effets de la variation des graines sur la performance des plantules de l'espèce invasive Ambrosia artemisiifolia L.
Publication date :
January 2016
Journal title :
Acta Oecologica
ISSN :
1146-609X
eISSN :
1873-6238
Publisher :
Elsevier, Paris, France
Volume :
71
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
PhD Thesis: "Rôles du climat et de la compétition interspécifique dans la limitation de l’aire d’Ambrosia artemisiifolia L. en Europe de l’Ouest: une approche écologique et évolutive"
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS (grant number 1.5061.12)
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