A man has been charged with criminal damage following a break-in at the Rothamsted Research centre where a trial of GM wheat is being held.
Rothamsted said that crops had been vandalised, causing “significant” damage.
The incident took place on Sunday morning at the centre’s test site in Harpenden, Hertfordshire.
The project aims to see whether the modified crops can deter aphids – a major wheat pest.
Rothamsted has previously pleaded with anti-GM campaigners not to destroy their experimental plots, which they say could help reduce pesticide use.
But opponents of GM technology claim that planting the crops in the open air would allow modified pollen to get out into the surrounding environment.
After the break-in at the site, Rothamsted scientist Toby Bruce wrote on Twitter that wheat seeds appeared to have been strewn onto plots, and the tops of plants had been cut off.