If you’re interested in plant genetics or agriculture or biodiversity, read about Nikolai Vavilov. But I wouldn’t recommend reading “Where Our Food Comes From” (though I’m personally glad to have read it since I probably otherwise never would have heard of the guy). On second thought, you might like it. I kept getting angry with the author even as I was fascinated by the subject.
Case in point:
The corporate and academic plant breeders who are the most common recipients of seeds from those repositories typically do work that is a poor substitute for that done on-farm by vernacular plant breeders, traditional farmers.