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Fitness of hybrids between rapeseed (Brassica napus) and wild Brassica rapa in natural habitats

Allainguillaume, J.; Alexander, M.; Bullock, J. M.; Saunders, M.; Allender, C. J.; King, G.; Ford, C. S.; Wilkinson, M. J.

Authors

M. Alexander

J. M. Bullock

M. Saunders

C. J. Allender

G. King

C. S. Ford

M. J. Wilkinson



Abstract

Fitness of hybrids between genetically modified (GM) crops and wild relatives influences the likelihood of ecological harm. We measured fitness components in spontaneous (non-GM) rapeseed x Brassica rapa hybrids in natural populations. The F1 hybrids yielded 46.9% seed output of B. rapa, were 16.9% as effective as males on B. rapa and exhibited increased self-pollination. Assuming 100% GM rapeseed cultivation, we conservatively predict < 7000 second-generation transgenic hybrids annually in the United Kingdom (i.e. ∼20% of F1 hybrids). Conversely, whilst reduced hybrid fitness improves feasibility of bio-containment, stage projection matrices suggests broad scope for some transgenes to offset this effect by enhancing fitness. © 2006 Blackwell Publishing Ltd.

Citation

Allainguillaume, J., Alexander, M., Bullock, J. M., Saunders, M., Allender, C. J., King, G., …Wilkinson, M. J. (2006). Fitness of hybrids between rapeseed (Brassica napus) and wild Brassica rapa in natural habitats. Molecular Ecology, 15(4), 1175-1184. https://doi.org/10.1111/j.1365-294X.2006.02856.x

Journal Article Type Article
Publication Date Apr 1, 2006
Journal Molecular Ecology
Print ISSN 0962-1083
Electronic ISSN 1365-294X
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 15
Issue 4
Pages 1175-1184
DOI https://doi.org/10.1111/j.1365-294X.2006.02856.x
Keywords brassica napus, brassica rapa, fitness, gene flow, genetically modified crops, wild relatives
Public URL https://uwe-repository.worktribe.com/output/1042908
Publisher URL http://dx.doi.org/10.1111/j.1365-294X.2006.02856.x