Seed bank dynamics govern persistence of Brassica hybrids in crop and natural habitats
dc.contributor.author | Hooftman, DAP | |
dc.contributor.author | Bullock, JM | |
dc.contributor.author | Morley, K | |
dc.contributor.author | Lamb, C | |
dc.contributor.author | Hodgson, DJ | |
dc.contributor.author | Bell, P | |
dc.contributor.author | Thomas, J | |
dc.contributor.author | Hails, RS | |
dc.date.accessioned | 2019-11-28T11:09:24Z | |
dc.date.issued | 2014-11-29 | |
dc.description.abstract | • Background and Aims: Gene flow from crops to their wild relatives has the potential to alter population growth rates and demography of hybrid populations, especially when a new crop has been genetically modified (GM). This study introduces a comprehensive approach to assess this potential for altered population fitness, and uses a combination of demographic data in two habitat types and mathematical (matrix) models that include crop rotations and outcrossing between parental species. • Methods: Full life-cycle demographic rates, including seed bank survival, of non-GM Brassica rapa x B. napus F1 hybrids and their parent species were estimated from experiments in both agricultural and semi-natural habitats. Altered fitness potential was modelled using periodic matrices including crop rotations and outcrossing between parent species. • Key Results: The demographic vital rates (i.e. For major stage transitions) of the hybrid population were intermediate between or lower than both parental species. The population growth rate (λ) of hybrids indicated decreases in both habitat types, and in a semi-natural habitat hybrids became extinct at two sites. Elasticity analyses indicated that seed bank survival was the greatest contributor to λ. In agricultural habitats, hybrid populations were projected to decline, but with persistence times up to 20 years. The seed bank survival rate was the main driver determining persistence. It was found that λ of the hybrids was largely determined by parental seed bank survival and subsequent replenishment of the hybrid population through outcrossing of B. Rapa with B. napus. • Conclusions: Hybrid persistence was found to be highly dependent on the seed bank, suggesting that targeting hybrid seed survival could be an important management option in controlling hybrid persistence. For local risk mitigation, an increased focus on the wild parent is suggested. Management actions, such as control of B. Rapa, could indirectly reduce hybrid populations by blocking hybrid replenishment. | en_GB |
dc.description.sponsorship | Biotechnology and Biological Sciences Research Council (BBSRC) | en_GB |
dc.description.sponsorship | Natural Environment Research Council (NERC) | en_GB |
dc.identifier.citation | Vol. 115 (1), pp. 147 - 157 | en_GB |
dc.identifier.doi | 10.1093/aob/mcu213 | |
dc.identifier.grantnumber | GM114157 | en_GB |
dc.identifier.grantnumber | NEC04432 | en_GB |
dc.identifier.grantnumber | NEC04630 | en_GB |
dc.identifier.grantnumber | NEC04940 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/39859 | |
dc.language.iso | en | en_GB |
dc.publisher | Oxford University Press (OUP) for Annals of Botany Company | en_GB |
dc.rights | © The Author 2014. Published by Oxford University Press on behalf of the Annals of Botany Company. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. | en_GB |
dc.subject | Brassica napus | en_GB |
dc.subject | Brassica rapa | en_GB |
dc.subject | demography | en_GB |
dc.subject | fitness | en_GB |
dc.subject | gene flow | en_GB |
dc.subject | genetically modified crops | en_GB |
dc.subject | hybridization | en_GB |
dc.subject | introgression | en_GB |
dc.subject | management | en_GB |
dc.subject | crop rotation | en_GB |
dc.title | Seed bank dynamics govern persistence of Brassica hybrids in crop and natural habitats | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-11-28T11:09:24Z | |
dc.identifier.issn | 0305-7364 | |
dc.description | This is the final version. Available on open access from Oxford University Press via the DOI in this record | en_GB |
dc.identifier.journal | Annals of Botany | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
pubs.euro-pubmed-id | MED:25452253 | |
dcterms.dateAccepted | 2014-09-16 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2014-11-29 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-11-28T11:06:55Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2019-11-28T11:09:28Z | |
refterms.panel | A | en_GB |
Files in this item
This item appears in the following Collection(s)
Except where otherwise noted, this item's licence is described as © The Author 2014. Published by Oxford University Press on behalf of the Annals of Botany Company.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.