Change search
ReferencesLink to record
Permanent link

Direct link
Trade-offs between seed output and life span - a quantitative comparison of traits between annual and perennial congeneric species
Stockholm University, Faculty of Science, Department of Physical Geography.
Show others and affiliations
Number of Authors: 5
2016 (English)In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 209, no 1, 104-114 p.Article in journal (Refereed) Published
Abstract [en]

Perennial plants allocate more resources belowground, thus sustaining important ecosystem services. Hence, shifting from annual to perennial crops has been advocated towards a more sustainable agriculture. Nevertheless, wild perennial species have lower seed production than selected annuals, raising the questions of whether there is a fundamental trade-off between reproductive effort and life span, and whether such trade-off can be overcome through selection. In order to address these questions and to isolate life span from phylogenetic and environmental factors, we conducted a meta-analysis encompassing c. 3000 congeneric annual/perennial pairs from 28 genera. This meta-analysis is complemented with a minimalist model of long-term productivity in perennial species. Perennials allocate more resources belowground and less to seeds than congeneric annuals, independently of selection history. However, existing perennial wheat and rice could achieve yields similar to annuals if they survived three years and each year doubled their biomass, as other perennial grasses do. Selected perennial crops maintain the large belowground allocation of wild perennials, and thus can provide desired regulatory ecosystem services. To match the seed yield of annuals, biomass production of perennial grains must be increased to amounts attained by some perennial grasses - if this goal can be met, perennial crops can provide a more sustainable alternative to annuals.

Place, publisher, year, edition, pages
2016. Vol. 209, no 1, 104-114 p.
Keyword [en]
agricultural sustainability, annual species, biomass allocation, ecophysiological trade-offs, perennial species
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-126187DOI: 10.1111/nph.13574ISI: 000365393700015PubMedID: 26214792OAI: oai:DiVA.org:su-126187DiVA: diva2:898777
Available from: 2016-01-29 Created: 2016-01-26 Last updated: 2016-01-29Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Manzoni, Stefano
By organisation
Department of Physical Geography
In the same journal
New Phytologist
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 47 hits
ReferencesLink to record
Permanent link

Direct link