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

Joel Allainguillaume, Matthew C. Alexander, J. M. Bullock, M. Saunders, Charlotte J. Allender, G. King, Caroline Sarah Ford, M. J. Wilkinson

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


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 × 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.
Original languageEnglish
Pages (from-to)1175-1184
Number of pages10
JournalMolecular Ecology
Issue number4
Early online date14 Mar 2006
Publication statusPublished - Apr 2006


Dive into the research topics of 'Fitness of hybrids between rapeseed (Brassica napus) and wild Brassica rapa in natural habitats'. Together they form a unique fingerprint.

Cite this