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2021-02-02Zeitschriftenartikel DOI: 10.18452/23248
Effects of mixing two legume species at seedling stage under different environmental conditions
dc.contributor.authorElsalahy, Heba
dc.contributor.authorBellingrath-Kimura, Sonoko
dc.contributor.authorKautz, Timo
dc.contributor.authorDöring, Thomas
dc.date.accessioned2021-08-20T09:48:19Z
dc.date.available2021-08-20T09:48:19Z
dc.date.issued2021-02-02none
dc.identifier.urihttp://edoc.hu-berlin.de/18452/23865
dc.descriptionThis article was supported by the German Research Foundation (DFG) and the Open Access Publication Fund of Humboldt-Universität zu Berlin.none
dc.description.abstractWhile intercropping is known to have positive effects on crop productivity, it is unclear whether the effects of mixing species start at the early plant stage, that is, during germination. We tested whether the germination of two legume species, alsike clover and black medic, characterized by a contrasting response to water availability and temperature is affected by mixing. We set up four experiments in each of which we compared a 1:1 mixture against the two monocultures, and combined this with various other experimental factors. These additional factors were (i) varied seed densities (50%, 100% and 150% of a reference density) in two field trials in 2016 and 2017, (ii) varied seed densities (high and low) and water availability (six levels, between 25% and 100% of water holding capacity (WHC)) in a greenhouse pot trial, (iii) varied seed spacing in a climate chamber, and (iv) varied temperatures (12 °C, 20 °C and 28 °C) and water availability (four levels between 25% and 100% of WHC) in a climate chamber. Across all experiments, the absolute mixture effects (AME) on germination ranged between −9% and +11%, with a median of +1.3%. Within experiments, significant mixture effects were observed, but the direction of these effects was inconsistent. In the field, AME on germination was significantly negative at some of the tested seed densities. A positive AME was observed in the climate chamber at 12 °C, and the mean AME decreased with increasing temperature. Higher density was associated with decreased germination in the field, indicating negative interaction through competition or allelopathy, among seedlings. Our findings indicate that interaction among seeds in species mixtures may be ongoing during germination, but that the direction of the mixture effect is affected by complex interactions with abiotic and biotic factors.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc570 Biologienone
dc.titleEffects of mixing two legume species at seedling stage under different environmental conditionsnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/23865-5
dc.identifier.doihttp://dx.doi.org/10.18452/23248
dc.type.versionpublishedVersionnone
local.edoc.pages25none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn2167-8359
dcterms.bibliographicCitation.doi10.7717/peerj.10615
dcterms.bibliographicCitation.journaltitlePeerJnone
dcterms.bibliographicCitation.volume9none
dcterms.bibliographicCitation.articlenumbere10615none
dcterms.bibliographicCitation.originalpublishernamePeerJ, Inc.none
dcterms.bibliographicCitation.originalpublisherplaceLondonnone
bua.departmentLebenswissenschaftliche Fakultätnone

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