Abstract
While the humble spud may seem simple enough boiled on a plate, a lot of thought and effort goes into producing the varieties we like to eat. Potato lovers are conservative: the Russet Burbank, for instance, has produced our favorite French fries since 1902 (Bethke et al., 2014). Cultivars need to be genetically stable—a state that is achieved in self-pollinating crop species like wheat and barley by repeated inbreeding. Many potato varieties, in contrast, are self-incompatible, and those that can self-pollinate produce weak offspring—a phenomenon known as inbreeding depression.
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