Traders carried
domesticated japonica from China to India, where it was bred with the cultivated rice species O. nivara to produce domesticated aus about 4,000 years ago, Fuller, Purugganan and colleagues reported in January in Molecular Biology and Evolution.
Not exact matches
DNA evidence clearly shows that China's wild O. rufipogon was
domesticated into O. sativa
japonica.
Scientists used to think modern rice, Oryza sativa, was
domesticated twice: sticky, short - grained
japonica rice was
domesticated in China, and in India, rice was
domesticated into long - grained varieties indica and aus.
Yet the majority of rice crops that supply 90 percent of the world come from just two
domesticated varieties,
japonica and indica.
japonica, and introgressive hybridization from early
japonica to proto - indica and proto - aus led to
domesticated indica and aus rice.