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dc.contributor.author
Chen, Jianguo
dc.contributor.author
Engbersen, Nadine
dc.contributor.author
Stefan, Laura
dc.contributor.author
Schmid, Bernhard
dc.contributor.author
Sun, Hang
dc.contributor.author
Schöb, Christian
dc.date.accessioned
2021-07-20T14:51:08Z
dc.date.available
2021-07-08T02:53:51Z
dc.date.available
2021-07-14T06:34:38Z
dc.date.available
2021-07-20T14:51:08Z
dc.date.issued
2021-07
dc.identifier.issn
2055-026X
dc.identifier.issn
2055-0278
dc.identifier.other
10.1038/s41477-021-00948-4
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/493457
dc.description.abstract
Resource allocation to reproduction is a critical trait for plant fitness1,2. This trait, called harvest index in the agricultural context3,4,5, determines how plant biomass is converted to seed yield and consequently financial revenue from numerous major staple crops. While plant diversity has been demonstrated to increase plant biomass6,7,8, plant diversity effects on seed yield of crops are ambiguous9 and dependent on the production syndrome10. This discrepancy might be explained through changes in the proportion of resources invested in reproduction in response to changes in plant diversity, namely through changes in species interactions and microenvironmental conditions11,12,13,14. Here, we show that increasing crop plant diversity from monocultures over two- to four-species mixtures increased annual primary productivity, resulting in overall higher plant biomass and, to a lesser extent, higher seed yield in mixtures compared with monocultures. The difference between the two responses to diversity was due to a reduced harvest index of the eight tested crop species in mixtures, possibly because their common cultivars have been bred for maximum performance in monoculture. While crop diversification provides a sustainable measure of agricultural intensification15, the use of currently available cultivars may compromise larger gains in seed yield. We therefore advocate regional breeding programmes for crop varieties to be used in mixtures that should exploit complementarity16 among crop species.
en_US
dc.language.iso
en
en_US
dc.publisher
Nature
dc.subject
Agroecology
en_US
dc.subject
Agriculture
en_US
dc.subject
Community ecology
en_US
dc.subject
Plant ecology
en_US
dc.title
Diversity increases yield but reduces harvest index in crop mixtures
en_US
dc.type
Journal Article
dc.date.published
2021-06-24
ethz.journal.title
Nature Plants
ethz.journal.volume
7
en_US
ethz.journal.issue
7
en_US
ethz.journal.abbreviated
Nat Plants
ethz.pages.start
893
en_US
ethz.pages.end
898
en_US
ethz.grant
Ecology and evolution in practice: A plant–plant interaction-based approach to the evolution of biodiversity effects on productivity
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
London
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::09618 - Schöb, Christian (ehemalig) / Schöb, Christian (former)
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02703 - Institut für Agrarwissenschaften / Institute of Agricultural Sciences::09618 - Schöb, Christian (ehemalig) / Schöb, Christian (former)
ethz.grant.agreementno
170645
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
SNF-Förderungsprofessuren Stufe 2
ethz.date.deposited
2021-07-08T02:54:45Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-07-20T14:51:14Z
ethz.rosetta.lastUpdated
2024-02-02T14:22:26Z
ethz.rosetta.versionExported
true
ethz.COinS
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