In the modern sense that is, of course potatoes have been genetically modified for a long time:
The Agriculture Department on Friday approved the first genetically modified potato for commercial planting in the United States, a move likely to draw the ire of groups opposed to artificial manipulation of foods.
The Innate potato, developed by the J.R. Simplot Co., is engineered to contain less of a suspected human carcinogen that occurs when a conventional potato is fried, and is also less prone to bruising during transport.
Boise, Idaho-based Simplot is a major supplier of frozen french fries to fast-food giant McDonald’s.
The story is here, and you will note that on Tuesday the mandatory GMO-labeling initiatives failed in Oregon and Colorado, the second failure in Oregon and that means failures in four states overall. Less positively, voters in Maui County, Hawaii chose to restrict GMO cultivation altogether. And now McDonald’s is under pressure not to use these new potatoes for its french fries. But of course you can understand the marketing dilemma of McDonald’s here — they can’t just come out and say “these french fries won’t give you cancer.”