IP and... Fruit?

Being technically inclined, I tend to think of Intellectual Property issues arising through technology - things like who owns the idea of a system (say, Facebook) or how technology is enabling new distribution channels for music, movies and writing and creating new questions of ownership and rights. But I never in my life thought there were IP issues relative to fruit! I learned this fascinating fact from the author of Fruit Hunters on NPR's Splendid Table. It turns out that fruit is surrounded by all kinds of sordid acts and espionage. Who knew?