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5 results for “root hemiparasite”
Host age affects the performance of the root hemiparasitic plant Rhinanthus alectorolophus
<p><span>Interactions between root hemiparasitic plants and their hosts are strongly affected by host identity but may also depend on the condition of the host. A</span><span>n important determinant of host quality could be host age, as it may influence host size, allocation patterns, responses to infection, and the strength of competition for light between parasite and host. </span><span>We investigated the effects of host species identity, host age and above-ground separation of hemiparasite and host on the </span><span>interactions between the hemiparasite <em>Rhinanthus</em> <em>alectorolophus</em> and five host species in a factorial experiment. The host species were planted at six different times, from ten weeks before the parasite was planted to four weeks after. </span><span>Host age strongly influenced the performance of the parasite, but these effects also varied among host species. </span><span>Parasites grew largest with hosts planted at the same time or two weeks earlier, but their performance strongly declined both with increasing host age and with the time they grew autotrophically. A large part of the variation due to host age but not of that due to host species identity could be related to the negative influence of host size at the likely time of parasite attachment. The low quality of older hosts was not due to light competition, suggesting that effective exploitation of these hosts was prevented by other factors like harder roots, stronger defence against parasite attack or competition for resources taken up by the host roots. Suppression of host growth by the parasites declined with increasing host age. The results indicate that the choice of host age may influence the results of studies on hemiparasites. They also highlight the importance for annual root hemiparasites of attachment in early spring, i.e. at a time when their mostly perennial hosts produce fresh roots but are still poorly developed above ground.</span></p>
Host age affects the performance of the root hemiparasitic plant Rhinanthus alectorolophus
Open the record for dataset details and reuse information.
Supplementary material 1 from: Těšitelová T, Knotková K, Knotek A, Cempírková H, Těšitel J (2024) Root hemiparasites suppress invasive alien clonal plants: evidence from a cultivation experiment. NeoBiota 90: 97-121. https://doi.org/10.3897/neobiota.90.113069
Supplementary information
Supplementary material 2 from: Těšitelová T, Knotková K, Knotek A, Cempírková H, Těšitel J (2024) Root hemiparasites suppress invasive alien clonal plants: evidence from a cultivation experiment. NeoBiota 90: 97-121. https://doi.org/10.3897/neobiota.90.113069
Primary data table
Effects of root hemiparasite Escobedia grandiflora (Orobanchaceae) on southern Brazilian grasslands: diversity, composition, and functional groups
<p>Data of plant cover from four locations</p>
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