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Zea Perennis
''Zea perennis'', the perennial teosinte, is a true grass species in the genus '' Zea'' and a teosinte. Taxonomy It is one of the two perennial species in the genus ''Zea''. The other perennial, '' Z. diploperennis,'' is the sister taxon of ''Z. perennis''. Those two species also form a clade with '' Z. luxurians''. Together, the three species make up the ''Luxuriantes'' section in the genus ''Zea''. ''Z. perennis'' is the sole tetraploid in the genus and fertile hybrids with diploid ''Zea'' species are rare. Ribosomal ITS evidence suggested introgression between ''Z. perennis'' and '' Z. mays'' that must have come from either crossing the ploidy barrier or been from the diploid ancestral pool. ''Z. perennis'' is generally considered to be an autotetraploid from some ancestral population of ''Z. diploperennis''. Agriculture Due to the economic importance of maize, significant scientific interest exists in using the genes of the other ''Zea'' species for crop improvement. ''Z. pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Spear Hitchcock
Albert Spear Hitchcock (September 4, 1865 – December 16, 1935) was an American botanist and agrostologist. Hitchcock graduated from the Iowa Agricultural College with bachelor's degree in 1884 and M.S. in 1886. From 1892 to 1901 he was a professor of botany at the Kansas State Agricultural College. Hitchcock joined the USDA in 1901 as Assistant Agrostologist under Frank Lamson-Scribner. In 1905 he was put in charge of the grass herbarium and became Systematic Agrostologist. After 1928, he held the title of Principal Biologist in charge of Systematic Agrostology of the Department of Agriculture and kept that title until his death in 1935. In 1912 he became Custodian of Grasses, Division of Plants, United States National Museum. Hitchcock remained Custodian without remuneration until his death. His field notebooks are archived in the Smithsonian Institution. He was a professor of botany in the Kansas State Agricultural College and authored over 250 works during his lifetime. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Gatlin Reeves
The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of '' Hruod'' ( non, Hróðr) "fame, glory, honour, praise, renown" and ''berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin. It is also in use as a surname. Another commonly used form of the name is Rupert. After becoming widely used in Continental Europe it entered England in its Old French form ''Robert'', where an Old English cognate form (''Hrēodbēorht'', ''Hrodberht'', ''Hrēodbēorð'', ''Hrœdbœrð'', ''Hrœdberð'', ''Hrōðberχtŕ'') had existed before the Norman Conquest. The feminine version is Roberta. The Italian, Portuguese, and Spanish form is Roberto. Robert is also a common name in many Germanic languages, including English, German, Dutch, Norwegian, Swedish, Scots, Danish, and Icelandic. It can be use ... [...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 Edward Murray East, E. M. East. In 1927 Mangelsdorf became a researcher at the Texas AgriLife Research#History, 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea (plant)
''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. luxu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea Diploperennis
''Zea diploperennis'', the diploperennial teosinte, is a species of grass (family: Poaceae) in the genus '' Zea'' and a teosinte (wild relative of maize or corn). It is perennial. Conservation Virtually all populations of this teosinte are either threatened or endangered: ''Z. diploperennis'' exists in an area of only a few square miles. 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. Researchers are studying ''Z. diploperennis'' as its genes provide resistance against ''Striga ''Striga'', commonly known as witchweed, is a genus of parasitic plants that occur naturally in parts of Africa, Asia, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea Luxurians
''Zea luxurians'', also referred to by the common names Maíz de Monte, Florida teosinte and Guatemalan teosinte, is a species of flowering plant in the family Poaceae. It is a true grass and a teosinte. Distribution It is native to Guatemala, Honduras and Mexico, but it can also be found in areas where it has been introduced, including Brazil, Colombia, and French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label=French Guianese Creole, Lagwiyann ) is an overseas departments and regions of France, overseas department/region and single territorial collectivity of France on the northern Atlantic ....Silva, NCdA., et al. 201Presence of ''Zea luxurians'' (Durieu and Ascherson) Bird in Southern Brazil: Implications for the Conservation of Wild Relatives of Maize.PLoS ONE 10(10): e0139034. References luxurians Grasses of Mexico Grasses of North America Flora of Guatemala Flora of Honduras Flora of Mexico Plants described in 1978 Taxa named by Mich ... [...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 and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial Crop
Perennial crops are crops that – unlike annual crops – don't need to be replanted each year. After harvest, they automatically grow back. Many fruit and nut crops are naturally perennial, however there is also a growing movement to create perennial alternatives to annual crops. From the 1920s to the 1950s, researchers in the former Soviet Union attempted to perennialize annual wheats by crossing them with perennial relatives such as intermediate wheatgrass. Interest waned when the crosses repeatedly resulted in sterile offspring, and seed yield decreased significantly. The next major time the project of perennializing grain was picked up was a wheat hybrid developed by the Montana Agricultural Experiment Station in 1986, which the Rodale Institute field tested. For example, The Land Institute has bred a perennial wheat crop known as Kernza. By eliminating or greatly reducing the need for tillage, perennial cropping can reduce topsoil losses due to erosion, increase biological car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhizome
In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow horizontally. The rhizome also retains the ability to allow new shoots to grow upwards. A rhizome is the main stem of the plant that runs underground horizontally. A stolon is similar to a rhizome, but a stolon sprouts from an existing stem, has long internodes, and generates new shoots at the end, such as in the strawberry plant. In general, rhizomes have short internodes, send out roots from the bottom of the nodes, and generate new upward-growing shoots from the top of the nodes. A stem tuber is a thickened part of a rhizome or stolon that has been enlarged for use as a storage organ. In general, a tuber is high in starch, e.g. the potato, which is a modified stolon. The term "tuber" is often used imprecisely and is sometimes applied to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grasses Of Mexico
Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns and pasture. The latter are commonly referred to collectively as grass. With around 780 genera and around 12,000 species, the Poaceae is the fifth-largest plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. The Poaceae are the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, rice, barley, and millet as well as feed for meat-producing animals. They provide, through direct human consumption, just over one-half (51%) of all dietary energy; rice provides 20%, wheat supplies 20%, maize (corn) 5.5%, and other grains 6%. Some members of the Poaceae are used as building materials (bamboo, thatch, and straw); others can provide a source of biofuel, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Jalisco
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
