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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. Biography Hitchcock graduated from the Iowa Agricultural College (now Iowa State University) 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 au ... [...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'' () "fame, glory, honour, praise, renown, godlike" and ''berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin.Reaney & Wilson, 1997. ''Dictionary of English Surnames''. Oxford University Press. It is also in use as a surname. Another commonly used form of the name is Rupert. After becoming widely used in Continental Europe, the name 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 Eng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Christoph Mangelsdorf
Paul Christoph Mangelsdorf (July 20, 1899 – July 22, 1989) was an American botanist and agronomist, known for his work on the origins of maize. Early life and education Mangelsdorf was born in Atchison, Kansas. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zea (plant)
''Zea'' is a genus of flowering plants in the Poaceae, 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 language, Greek name () for another cereal grain (possibly spelt).Gledhill, David (2008). "The Names of Plants". Cambridge University Press (CUP). (hardback), (paperback). pp 411 Recognized species The five accepted species names in the genus are: Maize (''Zea mays'') is further divided into four subspecies: ''Zea mays subsp. huehuetenangensis, Z. m. huehuetenangensis'', ''Zea mays subsp. mexicana, Z. m. mexicana'', ''Zea mays subsp. parviglumis, Z. m. parviglumis'' (Balsas teosinte, the ancestor of maize), and ''Zea mays subsp. mays, Z. m. mays''. The first three subspecies are teosintes; the last is maize, or co ... [...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 challenging 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, and A ... [...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, USDA ARS National Plant Germplasm System. is a species of annual in the family . It is a true grass and a teosinte. Distribution It is native to , |
Zea Mays
Maize (; ''Zea mays''), also known as corn in North American English, is a tall stout Poaceae, grass that produces cereal grain. It was domesticated by indigenous peoples of Mexico, indigenous peoples in southern Mexico about 9,000 years ago from wild teosinte. Native Americans planted it alongside beans and Cucurbita, squashes in the Three Sisters (agriculture), Three Sisters polyculture. The leafy Plant stem, stalk of the plant gives rise to male inflorescences or tassels which produce pollen, and female inflorescences called ear (botany), ears. The ears yield grain, known as Corn kernels, kernels or seeds. In modern commercial varieties, these are usually yellow or white; other varieties can be of many colors. Maize relies on humans for its propagation. Since the Columbian exchange, it has become a staple food in many parts of the world, with the List of most valuable crops and livestock products, total production of maize surpassing that of wheat and rice. Much maize is u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perennial Crop
Perennial crops are a perennial plant species that are cultivated and live longer than two years without the need of being replanted each year. Naturally perennial crops include many fruit and nut crops; some herbs and vegetables also qualify as perennial. Perennial crops have been cultivated for thousands of years; their cultivation differs from the mainstream Annual plants, annual agriculture because regular tilling is not required and this results in decreased soil erosion and increased soil health. Some perennial plants that are not cultivated as perennial crops are tomatoes, whose vines can live for several years but often freeze and die in winters outside of temperate climates, and potatoes which can live for more than two years but are usually harvested yearly. Despite making up 94% of plants on earth, perennials take up only 13% of global cropland. In contrast, grain crops take up about 70% of global cropland and global caloric consumption and are largely annual plants. Hi ... [...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 Shoot (botany), shoots from its Node (botany), 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 typically underground and horizontally to the soil surface. Rhizomes have nodes and internodes and auxiliary buds. Roots do not have nodes and internodes and have a root cap terminating their ends. 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 stolon is similar to a rhizome, but stolon sprouts from an existing stem having long internodes and generating new shoots at the ends, they are often also called runners such as in the strawberry plant. A stem tuber is a thickene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grasses Of Mexico
Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, 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 families, plant family, following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae. The Poaceae are the most economically important plant family, including staple foods from domesticated cereal crops such as maize, wheat, rice, oats, barley, and millet for people and as forage, feed for livestock, 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, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Jalisco
Flora (: floras or florae) is all the plant life present in a particular region or time, generally the naturally occurring ( indigenous) native plants. The corresponding term for animals is ''fauna'', and for fungi, it is ''funga''. Sometimes bacteria and fungi are also referred to as flora as in the terms ''gut flora'' or ''skin flora'' for purposes of specificity. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
