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Monitoring gene flow from the GM crop to non-GM equivalent crops in the vicinity - CB02005

This study was commissioned to monitor gene flow from genetically modified (GM) crops to adjacent non-GM equivalent crops. It was undertaken to validate assumptions made in the original risk assessments concerning gene flow from GM plants. Gene flow was monitored at the farm-scale evaluation (FSE) sites of fodder maize and winter and spring oilseed rape crops.
The team reported their results for gene flow from the GM to the non-GM fodder maize in September 2003 (link below]. The results for gene flow from the oilseed rape crops are now available to download [link below].

Following these investigations, the scientific team published a paper detailing a statistical model for the prediction of cross-pollination frequency that can be used to inform ongoing discussions of separation distance guidelines for oilseed rape:
Rebecca Weekes, Carola Deppe, Theo Allnutt , Caroline Boffey, Derek Morgan, Sarah Morgan, Mark Bilton, Roger Daniels and Christine Henry (2005) Crop-to-crop Gene Flow using Farm Scale Sites of Oilseed Rape (Brassica napus) in the UK Transgenic Research 14(5); 749-759 (available at,23,27;journal,1,52;linkingpublicationresults,1:100225,1).

Project Documents
• Final Report : Monitoring gene flow from the GM crop to non-GM equivalent crops in the vicinity   (647k)
• Abstract : Crop-to-crop gene flow using farm scale sites of oilseed rape( Brassica napus) in the UK   (308k)
Time-Scale and Cost
From: 2000

To: 2005

Cost: £248,596
Contractor / Funded Organisations
Central Science Laboratory
Agricultural Land              
Environmental Protection              
GM Non-Food              
GM Risk Assessment              
Fields of Study
Biotechnology and GMOs