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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 does not thrive if continuously submerged. [8] Rice can be grown in different environments, depending upon water availability. The usual arrangement is for lowland fields to be surrounded by bunds and flooded to a depth of a few centimetres until around a week before harvest time; this requires a large amount of water. The "alternate ...
Oryza is a genus of plants in the grass family. [3] [4] It includes the major food crop rice (species Oryza sativa and Oryza glaberrima).Members of the genus grow as tall, wetland grasses, growing to 1–2 metres (3–7 ft) tall; the genus includes both annual and perennial species.
Oryza glaberrima, commonly known as African rice, is one of the two domesticated rice species. [1] It was first domesticated and grown in West Africa around 3,000 years ago. [2] [3] In agriculture, it has largely been replaced by higher-yielding Asian rice (), [2] and the number of varieties grown is declining. [1]
William Harrison Rice (1813–1862) Mary Sophia Hyde (1816–1911) [i] Amos Starr Cooke (1810–1871) Juliette Montague (1812–1896) Paul Isenberg (1837–1903)
Jonas Rice (1672–1753), grandson of Edmund; first permanent English American settler and founder of Worcester, Massachusetts; Joseph Rice (1638–1711), son of Edmund, Member of the Massachusetts General Court in 1683 and 1698; Joseph Waldo Rice (1828–1915), American-born entrepreneur and early settler of Barmah, Victoria, Australia.
Oryza longistaminata is a perennial species of grass from the same genus as cultivated rice (O. sativa). It is native to most of sub-Saharan Africa and Madagascar. It has been introduced into the United States, where it is often regarded as a noxious weed. Its common names are longstamen rice [3] and red rice. [4]
An older theory, based on one chloroplast and two nuclear gene regions, Londo et al. (2006) had proposed that O. sativa rice was domesticated at least twice—indica in eastern India, Myanmar, and Thailand; and japonica in southern China and Vietnam—though they concede that archaeological and genetic evidence exist for a single domestication ...