In the United States, nearly 6,000 varieties of apple trees have disappeared over the past 100 years, and 95 percent of the cabbage varieties as well as 81 percent of the tomato varieties have apparently vanished.
Ameerika Ühendriikides on viimase 100 aastaga kadunud ligi 6000 õunasorti ning kadunud on ilmselt ka 95 protsenti kapsasortidest ja 81 protsenti tomatisortidest.