|
Triticum Sphaerococcum
Common wheat (''Triticum aestivum''), also known as bread wheat, is a cultivated wheat species. About 95% of wheat produced worldwide is common wheat; it is the most widely grown of all crops and the cereal with the highest monetary yield. Taxonomy Numerous forms of wheat have evolved under human selection. This diversity has led to confusion in the naming of wheats, with names based on both genetic and morphological characteristics. List of common cultivars * Albimonte * Manital * Shirley * Hilliard Phylogeny Bread wheat is an allohexaploid a combination of six sets of chromosomes from different species. Of the six sets of chromosomes, four come from emmer (''Triticum turgidum'', itself a tetraploid) and two from ''Aegilops tauschii'' (a wild diploid goatgrass). Wild emmer arose from an even earlier ploidy event, a tetraploidy between two diploids, wild einkorn (''T. urartu'') and '' A. speltoides'' (another wild goatgrass). Free-threshing wheat is closely related ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ear (botany)
An ear is the grain-bearing tip part of the plant stem, stem of a cereal plant, such as wheat or maize. It can also refer to "a prominent lobe in some leaves." The ear is a Spike (botany), spike, consisting of a central stem on which tightly packed rows of flowers grow. These develop into fruits containing the edible seeds. In maize, an ear is protected by leaves called husks. Inside an ear of corn is a corncob. In some species (including wheat), unripe ears contribute significantly to photosynthesis, in addition to the leaves lower down the plant. A parasite known as ''Anguina tritici'' (ear cockle) specifically affects the ears on wheat and rye by destroying the tissues and stems during growth. The parasite has been eradicated in most countries (with the exception of North Africa and West Asia) by using the crop rotation system. References Plant morphology {{Plant-morphology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraploid
Polyploidy is a condition in which the cells of an organism have more than two paired sets of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two complete sets of chromosomes, one from each of two parents; each set contains the same number of chromosomes, and the chromosomes are joined in pairs of homologous chromosomes. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis; the sporophyte generation is diploid and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triticum Turgidum
''Triticum turgidum'' (with its various subspecies being known as ''pasta wheat'', ''macaroni wheat'' and ''durum wheat'') is a species of wheat. It is an annual and grows primarily in temperate areas and is native to countries around the eastern Mediterranean, down to Iran and east to Xinjiang, China. Taxonomy It was first published and described by Carl Linnaeus in his book ''Species Plantarum'' on page 86 in 1753. It is known as ''rivet wheat''. Distribution It is native to the countries of Egypt, Iran, Iraq, Kazakhstan, Kyrgyzstan, Lebanon, North Caucasus (parts of Russia), Syria, Israel, Transcaucasus (or South Caucasus; Armenia, Georgia, and Azerbaijan), Turkey, Turkmenistan, Uzbekistan and Xinjiang, China. It has been introduced into many places, including within Europe (Albania, Austria, Belarus, Bulgaria, Corsica, Crete, Cyprus, Czechia, Denmark, East Aegean Islands, France, Germany, Great Britain, Greece, Hungary, Italy, Madeira, Netherlands, Poland, Portugal, Roman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triticum Durum
Durum wheat (), also called pasta wheat or macaroni wheat (''Triticum durum'' or ''Triticum turgidum'' subsp. ''durum''), is a tetraploid species of wheat. It is the second most cultivated species of wheat after common wheat, although it represents only 5% to 8% of global wheat production. It was developed by artificial selection of the domesticated emmer wheat strains formerly grown in Central Europe and the Near East around 7000 BC, which developed a naked, free-threshing form. Like emmer, durum wheat is awned (with bristles). It is the predominant wheat grown in the Middle East. ''Durum'' in Latin means 'hard', and the species is the hardest of all wheats. This refers to the resistance of the grain to milling, in particular of the starchy endosperm, causing dough made from its flour to be weak or "soft". This makes durum favorable for semolina and pasta and less practical for flour, which requires more work than with hexaploid wheats such as common bread wheats. Despite it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene is an interglacial period within the ongoing Ice age, glacial cycles of the Quaternary, and is equivalent to Marine isotope stages, Marine Isotope Stage 1. The Holocene correlates with the last maximum axial tilt towards the Sun of the Earth#Axial tilt and seasons, Earth's obliquity. The Holocene corresponds with the rapid proliferation, growth, and impacts of the human species worldwide, including Recorded history, all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban culture, urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global significance for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Asia
West Asia (also called Western Asia or Southwest Asia) is the westernmost region of Asia. As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenian highlands, the Levant, the island of Cyprus, the Sinai Peninsula and the South Caucasus. The region is separated from Africa by the Isthmus of Suez in Egypt, and separated from Europe by the waterways of the Turkish Straits and the watershed of the Greater Caucasus. Central Asia lies to its northeast, while South Asia lies to its east. Twelve seas surround the region (clockwise): the Aegean Sea, the Sea of Marmara, the Black Sea, the Caspian Sea, the Persian Gulf, the Gulf of Oman, the Arabian Sea, the Gulf of Aden, the Red Sea, the Gulf of Aqaba, the Gulf of Suez, and the Mediterranean Sea. West Asia contains the majority of the similarly defined Middle East. The ''Middle East'' is a political term invented by Western geographers that has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spelt
Spelt (''Triticum spelta''), also known as dinkel wheat is a species of wheat. It is a relict crop, eaten in Central Europe and northern Spain. It is high in protein and may be considered a health food. Spelt was cultivated from the Neolithic period onward. It was a staple food in parts of Europe from the Bronze Age to the Middle Ages. It is used in baking, and is made into bread, pasta, and beer. It is sometimes considered a subspecies of the closely related common wheat (''T. aestivum''), in which case its botanical name is considered to be ''Triticum aestivum'' subsp. ''spelta''. It is a hexaploid, most likely a hybrid of wheat and emmer. Description Spelt is a species of '' Triticum'', a large stout grass similar to bread wheat. Its flowering spike is slenderer than that of bread wheat; when ripe, it bends somewhat from the vertical. The spike is roughly four-edged. The axis of the spike is brittle and divided into segments; it shatters into separate segments wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant And Cell Physiology
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frontiers In Genetics
Frontiers Media SA is a publisher of peer-reviewed, open access, scientific journals currently active in science, technology, and medicine. It was founded in 2007 by Kamila and Henry Markram. Frontiers is based in Lausanne, Switzerland, with offices in the United Kingdom, Spain, and China. In 2022, Frontiers employed more than 1,400 people, across 14 countries. All Frontiers journals are published under a Creative Commons Attribution License. In 2015, Frontiers Media was classified as a possible predatory publisher by Jeffrey Beall, though Beall's list was taken offline two years later in a decision that remains controversial. History The first journal published was ''Frontiers in Neuroscience'', which opened for submission as a beta version in 2007. In 2010, Frontiers launched a series of another 11 journals in medicine and science. In February 2012, the Frontiers Research Network was launched, a social networking platform for researchers, intended to disseminate the open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science (journal)
''Science'' is the peer review, peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals. It was first published in 1880, is currently circulated weekly and has a subscriber base of around 130,000. Because institutional subscriptions and online access serve a larger audience, its estimated readership is over 400,000 people. ''Science'' is based in Washington, D.C., United States, with a second office in Cambridge, UK. Contents The major focus of the journal is publishing important original scientific research and research reviews, but ''Science'' also publishes science-related news, opinions on science policy and other matters of interest to scientists and others who are concerned with the wide implications of science and technology. Unlike most scientific journals, which focus on a specific field, ''Science'' and its rival ''Nature (journal), Nature'' cover the full range of List of academ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frontiers In Plant Science
''Frontiers in Plant Science'' is a peer-reviewed scientific journal covering all aspects of botany. It was established in 2010 and is published by Frontiers Media. The editor-in-chief is Yunde Zhao (University of California, San Diego). Abstracting and indexing Since 2019, the journal has a score of 2 in the Norwegian Scientific Index, which "covers the most prestigious and rigorous channels, which publish 20 percent of the publications". According to the Frontiers, the journal Frontiers in Plant Science 2021 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a type of journal ranking. Journals with higher impact factor values are considered more prestigious or important within their field. The Impact Factor of a journa ... is 6.627. References External links * {{Official website, https://www.frontiersin.org/journals/plant-science Academic journals established in 2010 English-language journals Botany journals Frontiers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Speltoides
''Aegilops speltoides'' ( syn. ''Sitopsis speltoides'' ( Tausch) Á.Löve) is an edible goatgrass in the family Poaceae native to Southeastern Europe and Western Asia, which is often used for animal feed, and it has grown in cultivated beds. This plant is an important natural source of disease resistance in wheat, and it is known or likely to be susceptible to barley mild mosaic bymovirus. Genome ''Aegilops speltoides'' is a diploid of 2''n'' = 2''x'' = 14. ''A. speltoides'' is divided into two morphotypes, the dominant ' and the recessive In genetics, dominance is the phenomenon of one variant (allele) of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome. The first variant is termed dominant and ... '. References Sources Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.) (1996 onwards). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
