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Teosinte
''Zea'' is a genus of flowering plants in the grass family. The best-known species is ''Z. mays'' (variously called maize, corn, or Indian corn), one of the most important crops for human societies throughout much of the world. The four wild species are commonly known as teosintes and are native to Mesoamerica. Etymology ''Zea'' is derived from the Greek name () for another cereal grain (possibly spelt).Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). pp 411 Recognized species The five accepted species names in the genus are: '' Zea mays'' is further divided into four subspecies: ''Z. m. huehuetenangensis'', ''Z. m. mexicana'', '' Z. m. parviglumis'' (Balsas teosinte, the ancestor of maize), and ''Z. m. mays''. The first three subspecies are teosintes; the last is maize, or corn, the only domesticated taxon in the genus ''Zea''. The genus is divided into two sections: ''Luxuriantes'', with ''Z. diploperennis'', ''Z. l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea Mays
Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn ( North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. The leafy stalk of the plant produces pollen inflorescences (or "tassels") and separate ovuliferous inflorescences called ears that when fertilized yield kernels or seeds, which are fruits. The term ''maize'' is preferred in formal, scientific, and international usage as a common name because it refers specifically to this one grain, unlike ''corn'', which has a complex variety of meanings that vary by context and geographic region. Maize has become a staple food in many parts of the world, with the total production of maize surpassing that of wheat or rice. In addition to being consumed directly by humans (often in the form of masa), maize is also used for corn ethanol, animal feed and other maize products, such as corn starch a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maize J7
Maize ( ; ''Zea mays'' subsp. ''mays'', from es, maíz after tnq, mahiz), also known as corn (North American and Australian English), is a cereal grain first domesticated by indigenous peoples in southern Mexico about 10,000 years ago. The leafy stalk of the plant produces pollen inflorescences (or "tassels") and separate ovuliferous inflorescences called ears that when fertilized yield kernels or seeds, which are fruits. The term ''maize'' is preferred in formal, scientific, and international usage as a common name because it refers specifically to this one grain, unlike ''corn'', which has a complex variety of meanings that vary by context and geographic region. Maize has become a staple food in many parts of the world, with the total production of maize surpassing that of wheat or rice. In addition to being consumed directly by humans (often in the form of masa), maize is also used for corn ethanol, animal feed and other maize products, such as corn starch and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea Mays Subsp
Zea may refer to: Nature * ''Zea'' (plant), a genus of large grasses, including: **''Zea mays'', commonly known as maize or corn * ''Zea'' (skipper), a genus of butterflies *''Helicoverpa zea'', the corn earworm, a major agricultural pest *ZEA, an abbreviation for the mycotoxin zearalenone People and places *Zea (surname), a surname *Zea (island), an island of the Cyclades archipelago *Bay of Zea, one of the harbours of Piraeus in Athens, Greece **Zea Harbour Project, a Danish-Greek archaeological project Other uses *Zea (Bread), a Greek bread made from farro or "zea," as it is known in Greek. * ''Zea'' (EP), a 1993 alternative EP from dEUS * ''Zea'' (film), a 1981 short film * ZE:A, a South Korean boy band *zea, the language code abbreviation for Zeelandic, a West Flemish dialect of Dutch See also * Teosinte (other) Teosintes are several wild species of grass in the genus ''Zea'' which are critical components of maize evolution. Teosinte may also refer to: *''Zea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea Nicaraguensis
''Zea nicaraguensis'' is an annual, true grass species in the genus '' Zea''. It is considered to be phenotypically the most distinctive, as well as the most threatened teosinte. This teosinte thrives in flooded conditions along 200 m of a coastal estuarine river in northwest Nicaragua at the Reserva Natural de Apacunca. Virtually all populations of teosinte are either threatened or endangered with ''Z. nicaraguensis'' being the most endangered, it survives as about 6000 plants in an area of 200 x 150 m. The Mexican and Nicaraguan governments have taken action in recent years to protect wild teosinte populations, using both ''in situ'' and ''ex situ'' conservation methods. Currently, a large amount of scientific interest exists in conferring beneficial teosinte traits, such as insect resistance, perennialism, and flood tolerance, to cultivated maize lines, although this is very difficult due to linked deleterious teosinte traits. References External links nicaraguensis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea Diploperennis01
Zea may refer to: Nature * ''Zea'' (plant), a genus of large grasses, including: **''Zea mays'', commonly known as maize or corn * ''Zea'' (skipper), a genus of butterflies *''Helicoverpa zea'', the corn earworm, a major agricultural pest *ZEA, an abbreviation for the mycotoxin zearalenone People and places *Zea (surname), a surname *Zea (island), an island of the Cyclades archipelago *Bay of Zea, one of the harbours of Piraeus in Athens, Greece **Zea Harbour Project, a Danish-Greek archaeological project Other uses *Zea (Bread), a Greek bread made from farro or "zea," as it is known in Greek. * ''Zea'' (EP), a 1993 alternative EP from dEUS * ''Zea'' (film), a 1981 short film * ZE:A, a South Korean boy band *zea, the language code abbreviation for Zeelandic, a West Flemish dialect of Dutch See also * Teosinte (other) Teosintes are several wild species of grass in the genus ''Zea'' which are critical components of maize evolution. Teosinte may also refer to: *''Zea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honduras
Honduras, officially the Republic of Honduras, is a country in Central America. The republic of Honduras is bordered to the west by Guatemala, to the southwest by El Salvador, to the southeast by Nicaragua, to the south by the Pacific Ocean at the Gulf of Fonseca, and to the north by the Gulf of Honduras, a large inlet of the Caribbean Sea. Its capital and largest city is Tegucigalpa. Honduras was home to several important Mesoamerican cultures, most notably the Maya, before the Spanish Colonization in the sixteenth century. The Spanish introduced Catholicism and the now predominant Spanish language, along with numerous customs that have blended with the indigenous culture. Honduras became independent in 1821 and has since been a republic, although it has consistently endured much social strife and political instability, and remains one of the poorest countries in the Western Hemisphere. In 1960, the northern part of what was the Mosquito Coast was transferred from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heterochromatin
Heterochromatin is a tightly packed form of DNA or '' condensed DNA'', which comes in multiple varieties. These varieties lie on a continue between the two extremes of constitutive heterochromatin and facultative heterochromatin. Both play a role in the expression of genes. Because it is tightly packed, it was thought to be inaccessible to polymerases and therefore not transcribed; however, according to Volpe et al. (2002), and many other papers since, much of this DNA is in fact transcribed, but it is continuously turned over via RNA-induced transcriptional silencing (RITS). Recent studies with electron microscopy and OsO4 staining reveal that the dense packing is not due to the chromatin. Constitutive heterochromatin can affect the genes near itself (e.g. position-effect variegation). It is usually repetitive and forms structural functions such as centromeres or telomeres, in addition to acting as an attractor for other gene-expression or repression signals. Facultati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Section (botany)
In botany, a section ( la, sectio) is a taxonomic rank below the genus, but above the species. The subgenus, if present, is higher than the section, and the rank of series, if present, is below the section. Sections may in turn be divided into subsections.Article 4 in Sections are typically used to help organise very large genera, which may have hundreds of species. A botanist wanting to distinguish groups of species may prefer to create a taxon at the rank of section or series to avoid making new combinations, i.e. many new binomial names for the species involved. Examples: * '' Lilium'' sectio ''Martagon'' Rchb. are the Turks' cap lilies * '' Plagiochila aerea'' Taylor is the type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( ... of ''Plagiochila'' sect. ''Bursata ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxon
In biology, a taxon ( back-formation from '' taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Christoph Mangelsdorf
Paul Christoph Mangelsdorf (born in Atchison, Kansas on July 20, 1899; died July 22, 1989) was an American botanist and agronomist, known for his work on the origins of maize. Early life and education His father was a Prussian immigrant and his mother was also German. He studied at Kansas State University when it was still the "Kansas State Agricultural College" and received his bachelor's degree there in 1921. In 1921 he became Donald F. Jones's assistant in Connecticut and simultaneously furthered his studies at Harvard University, attaining his doctorate in 1925 under the direction of E. M. East. In 1927 Mangelsdorf became a researcher at the Texas Agricultural Experiment Station, where he became interested in the genetic origins of maize. In 1940 he became a professor of economic botany at Harvard and continued his research there until his retirement in 1968. After his retirement, he continued his research at the University of North Carolina, Chapel Hill. In 1941, Mangelsdorf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
