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

A - Papers appearing in refereed journals

Allainguillaume, J., Alexander, M., Bullock, J. M., Saunders, M., Allender, C. J., King, G. J., Ford, C. S. and Wilkinson, M. J. 2006. Fitness of hybrids between rapeseed (Brassica napus) and wild Brassica rapa in natural habitats. Molecular Ecology. 15 (4), pp. 1175-1184.

AuthorsAllainguillaume, J., Alexander, M., Bullock, J. M., Saunders, M., Allender, C. J., King, G. J., Ford, C. S. and Wilkinson, M. J.
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 F-1 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. similar to 20% of F-1 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.

KeywordsBiochemistry & Molecular Biology; Ecology; Evolutionary Biology
Year of Publication2006
JournalMolecular Ecology
Journal citation15 (4), pp. 1175-1184
Digital Object Identifier (DOI)doi:10.1111/j.1365-294X.2006.02856.x
PubMed ID16599976
Open accessPublished as non-open access
Funder project or code501
Project: 4719
PublisherWiley
ISSN0962-1083

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