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Southern or annual wild rice (Z. aquatica), also an annual, grows in the Saint Lawrence River, the state of Florida, [5] and on the Atlantic and Gulf coasts of the United States. [6] [7] Texas wild rice is a perennial plant found only in a small area along the San Marcos River in central Texas. One species is native to Asia:
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]
Zizania latifolia, known as Manchurian wild rice [5] (Chinese: 菰; pinyin: gū), is the only member of the wild rice genus Zizania native to Asia. It is used as a food plant. Both the stem and grain are edible. Gathered in the wild, Manchurian wild rice was an important grain in ancient China.
Hybrid Rice. Hybrid rice is a type of Asian rice that has been crossbred from two very different parent varieties. [1] As with other types of hybrids, hybrid rice typically displays heterosis or "hybrid vigor", so when grown under the same conditions as comparable purebred rice varieties, it can produce up to 30% more yield. [2]
In domestic breeding, the foal and dam are usually separated from the herd for a while, but within a few weeks are typically pastured with the other horses. A foal will begin to eat hay, grass and grain alongside the mare at about 4 weeks old; by 10–12 weeks the foal requires more nutrition than the mare's milk can supply.
Choosing from among the possible quality goals and then achieving them is a "formidable challenge" [35] for all rice breeding programs. Low yield: the high yield of elite grain varieties is always compromised by crossing with wild material. However, even low-yielding wild rice species can harbor genes for increasing yield [36] [37]
Thailand has a large number of rice varieties, 3,500 kinds with different characters, and five kinds of wild rice cultivates. [76] In each region of the country there are different rice seed types. Their use depends on weather, atmosphere, and topography. [77] The northern region has both lowlands and high lands.
Rice was established in Arkansas in 1904, California in 1912, and the Mississippi Delta in 1942. [3] Rice cultivation in California in particular started during the California Gold Rush. It was introduced primarily for the consumption of about 40,000 Chinese laborers who were brought as immigrants to the state; only a small area was under rice ...