[js1138]

Many commercial crops, but corn in particular, are grown from hybrid seed. Hybrid corn does not produce commercially useful seeds (except of course to be eaten).

I lived in Indiana for quite a few years, and the radio commercials were just like those read by Les Nesman on WKRP, only more technical. Hybrid corn was the biggest sponsor.

[Doctor Stochastic]

Use of hybrid corn though isn't the "green revolution" although Lysenko did claim that such hybrids are non-productive. He claimed the only point of hybridization was to keep farmers enslaved to the Capitalist Seed Mongers.