There’s also rice, for one thing. Check out the recent BBC video on the Eden Project: rice makes an appearance at about the 2:30 mark. A quick search of the website does suggest that agrobiodiversity is well represented in the Biomes. And you can definitely buy crop seeds in the shop. But I couldn’t find any references to crop wild relatives on the website, which seems a pity. Or have I missed something? Eden would seem to be a great opportunity for education and public awareness on CWRs.
Eden is almost exclusively crops – it relates to human/plant interdependence. There were cocoa, cork oak, bamboo, amaranth, coffees and any number of others when I was there. Relatively few “wild” plants.