Cargando…

Stabilization of yield in plant genotype mixtures through compensation rather than complementation

BACKGROUND AND AIMS: Plant genotypic mixtures have the potential to increase yield stability in variable, often unpredictable environments, yet knowledge of the specific mechanisms underlying enhanced yield stability remains limited. Field studies are constrained by environmental conditions which ca...

Descripción completa

Detalles Bibliográficos
Autores principales: Creissen, Henry E., Jorgensen, Tove H., Brown, James K. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3806538/
https://www.ncbi.nlm.nih.gov/pubmed/24047715
http://dx.doi.org/10.1093/aob/mct209
_version_ 1782288391283408896
author Creissen, Henry E.
Jorgensen, Tove H.
Brown, James K. M.
author_facet Creissen, Henry E.
Jorgensen, Tove H.
Brown, James K. M.
author_sort Creissen, Henry E.
collection PubMed
description BACKGROUND AND AIMS: Plant genotypic mixtures have the potential to increase yield stability in variable, often unpredictable environments, yet knowledge of the specific mechanisms underlying enhanced yield stability remains limited. Field studies are constrained by environmental conditions which cannot be fully controlled and thus reproduced. A suitable model system would allow reproducible experiments on processes operating within crop genetic mixtures. METHODS: Phenotypically dissimilar genotypes of Arabidopsis thaliana were grown in monocultures and mixtures under high levels of competition for abiotic resources. Seed production, flowering time and rosette size were recorded. KEY RESULTS: Mixtures achieved high yield stability across environments through compensatory interactions. Compensation was greatest when plants were under high levels of heat and nutrient stress. Competitive ability and mixture performance were predictable from above-ground phenotypic traits even though below-ground competition appeared to be more intense. CONCLUSIONS: This study indicates that the mixing ability of plant genotypes can be predicted from their phenotypes expressed in a range of relevant environments, and implies that a phenotypic screen of genotypes could improve the selection of suitable components of genotypic mixtures in agriculture intended to be resilient to environmental stress.
format Online
Article
Text
id pubmed-3806538
institution National Center for Biotechnology Information
language English
publishDate 2013
publisher Oxford University Press
record_format MEDLINE/PubMed
spelling pubmed-38065382013-10-23 Stabilization of yield in plant genotype mixtures through compensation rather than complementation Creissen, Henry E. Jorgensen, Tove H. Brown, James K. M. Ann Bot Original Articles BACKGROUND AND AIMS: Plant genotypic mixtures have the potential to increase yield stability in variable, often unpredictable environments, yet knowledge of the specific mechanisms underlying enhanced yield stability remains limited. Field studies are constrained by environmental conditions which cannot be fully controlled and thus reproduced. A suitable model system would allow reproducible experiments on processes operating within crop genetic mixtures. METHODS: Phenotypically dissimilar genotypes of Arabidopsis thaliana were grown in monocultures and mixtures under high levels of competition for abiotic resources. Seed production, flowering time and rosette size were recorded. KEY RESULTS: Mixtures achieved high yield stability across environments through compensatory interactions. Compensation was greatest when plants were under high levels of heat and nutrient stress. Competitive ability and mixture performance were predictable from above-ground phenotypic traits even though below-ground competition appeared to be more intense. CONCLUSIONS: This study indicates that the mixing ability of plant genotypes can be predicted from their phenotypes expressed in a range of relevant environments, and implies that a phenotypic screen of genotypes could improve the selection of suitable components of genotypic mixtures in agriculture intended to be resilient to environmental stress. Oxford University Press 2013-11 2013-09-18 /pmc/articles/PMC3806538/ /pubmed/24047715 http://dx.doi.org/10.1093/aob/mct209 Text en © The Author 2013. Published by Oxford University Press on behalf of the Annals of Botany Company. http://creativecommons.org/licenses/by/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Creissen, Henry E.
Jorgensen, Tove H.
Brown, James K. M.
Stabilization of yield in plant genotype mixtures through compensation rather than complementation
title Stabilization of yield in plant genotype mixtures through compensation rather than complementation
title_full Stabilization of yield in plant genotype mixtures through compensation rather than complementation
title_fullStr Stabilization of yield in plant genotype mixtures through compensation rather than complementation
title_full_unstemmed Stabilization of yield in plant genotype mixtures through compensation rather than complementation
title_short Stabilization of yield in plant genotype mixtures through compensation rather than complementation
title_sort stabilization of yield in plant genotype mixtures through compensation rather than complementation
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3806538/
https://www.ncbi.nlm.nih.gov/pubmed/24047715
http://dx.doi.org/10.1093/aob/mct209
work_keys_str_mv AT creissenhenrye stabilizationofyieldinplantgenotypemixturesthroughcompensationratherthancomplementation
AT jorgensentoveh stabilizationofyieldinplantgenotypemixturesthroughcompensationratherthancomplementation
AT brownjameskm stabilizationofyieldinplantgenotypemixturesthroughcompensationratherthancomplementation