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Oryza sativa, having the common name Asian cultivated rice, [2] is the much more common of the two rice species cultivated as a cereal, the other species being O. glaberrima, African rice. It was first domesticated in the Yangtze River basin in China 13,500 to 8,200 years ago.
Rice can come in many shapes, colours and sizes. This is a list of rice cultivars, also known as rice varieties.There are several species of grain called rice. [1] Asian rice (Oryza sativa) is most widely known and most widely grown, with two major subspecies (indica and japonica) and over 40,000 varieties. [2]
Both indica and japonica forms of Asian rice sprang from a single domestication event in China from the wild rice Oryza rufipogon. [22] [21] Despite this evidence, it appears that indica rice arose when japonica arrived in India about 4,500 years ago and hybridised with another rice, whether an undomesticated proto-indica or wild O. nivara. [23]
Japonica rice (Oryza sativa subsp. japonica), sometimes called sinica rice, is one of the two major domestic types of Asian rice varieties. Japonica rice is extensively cultivated and consumed in East Asia , whereas in most other regions indica rice is the dominant type of rice.
Stoners and scientists disagree on the answer. Some ask for a new system.
The origin of Oryza sativa rice domestication has been a subject of much debate among those who study crop history and anthropology – whether rice originated in India or China. [40] [41] Asian rice, Oryza sativa, is one of oldest crop species. It has tens of thousands of varieties and two major subspecies, japonica and indica.
Indica, sativa & hybrid. Despite many disagreements about the scientific difference between indica, sativa and hybrid strains of cannabis, all three come with generalizations about the high a ...
Oryza rufipogon (red rice) Poaceae: Ancestor to Oryza sativa: 406 Mb: 37,071: SIBS: 2012 [210] Illumina HiSeq2000 100x coverage Oryza sativa (long grain rice) ssp indica: Poaceae: Crop and model cereal: 430 Mb [211] International Rice Genome Sequencing Project (IRGSP) 2002 [212] Oryza sativa (Short grain rice) ssp japonica: Poaceae: Crop and ...