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Published online 2 April 2008 | Nature | doi:10.1038/news.2008.729
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Transgenic crops can persist for ten years
Genetically modified oilseed rape springs up a decade after trial crop was sown.
Transgenic oilseed rape can survive and produce plants as much as a decade after it was sown, according to a study done in Sweden.
The discovery that transgenic seeds can survive and germinate on farmland for this length of time raises fresh questions about how to monitor genetically modified (GM) crops.
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http://newsroom.msu.edu/site/indexer/672/content.htm (120-year weed seed viability). "some of the seeds will remain viable for an awfully long time," head of North Wyke Research in Devon, UK. Res ipsa loquitur.