Ancient Farmers Started the First 'Green Revolution'

The 1960s marked a turning point for agriculture in Asia: that's when plant breeders launched a "green revolution" in rice production, selecting variants of a single gene that boosted yields across the continent. A new study finds that prehistoric farmers were revolutionaries, too. They apparently harnessed that same gene when they first domesticated rice as early as 10,000 years ago.

The history of rice farming is very complex, but the basic facts are well established. All of today's domesticated rice belongs to the species Oryza sativa, which descends from the wild ancestor Oryza rufipogon. O. sativa has two major subspecies, japonica (short-grain rice grown mostly in Japan) and indica (long-grain rice grown mostly in India, Southeast Asia, and southern China).

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