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Performance of two Rhinanthus species under different hydric conditions

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Ducarme, Véronique [UCL] Wesselingh, Renate A. [UCL]

Rhinanthus angustifolius and Rhinanthus minor are annual hemiparasitic herbs found in open vegetations. They are closely related, hybridize frequently, and appear to have largely overlapping niches, although some floras report a preference of R. angustifolius for more humid conditions compared to R. minor. We analysed the relative fitness of both species by following their fate from germination to seed production in three different hydric treatments (wet, moist and dry) in a garden experiment. We found that R. angustifolius was either as fit as or fitter than R. minor in all conditions and for all studied parameters, with a slightly higher flower production in R. angustifolius in the wet treatment. Wet conditions had a negative effect on germination and flowering rate, but they increased flower and seed production. These observations show that environmental conditions will influence the composition of mixed Rhinanthus populations.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 2010
Language Anglais
Journal information "Plant Ecology" - Vol. 206, no. 2, p. 263-277 (2010)
Peer reviewed yes
Publisher Springer (Dordrecht)
issn 1385-0237
Publication status Publié
Affiliation UCL
Keywords Environmental effects ; Flowering ; Germination ; Hydric treatments ; Orobanchaceae ; Seed production ; 3123
Links
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Bibliographic reference Ducarme, Véronique ; Wesselingh, Renate A.. Performance of two Rhinanthus species under different hydric conditions. In: Plant Ecology, Vol. 206, no. 2, p. 263-277 (2010)
Permanent URL http://hdl.handle.net/2078.1/34286