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Medicago Ovalis
''Medicago'' is a genus of flowering plants, commonly known as medick or burclover, in the legume family ( Fabaceae). It contains at least 87 species and is distributed mainly around the Mediterranean basin. The best-known member of the genus is alfalfa (''M. sativa''), an important forage crop, and the genus name is based on the Latin name for that plant, , from el, μηδική (πόα) Median (grass). Most members of the genus are low, creeping herbs, resembling clover, but with burs (hence the common name). However, alfalfa grows to a height of 1 meter, and tree medick (''M. arborea'') is a shrub. Members of the genus are known to produce bioactive compounds such as medicarpin (a flavonoid) and medicagenic acid (a triterpenoid saponin). Chromosome numbers in ''Medicago'' range from 2''n'' = 14 to 48. The species ''Medicago truncatula'' is a model legume due to its relatively small stature, small genome (450–500 Mbp), short generation time (about 3 months), and abilit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medicago Littoralis
''Medicago littoralis'' is a plant species of the genus ''Medicago''. It is found primarily in the Mediterranean basin. It forms a symbiotic relationship with the bacterium '' Sinorhizobium meliloti'', which is capable of nitrogen fixation Nitrogen fixation is a chemical process by which molecular nitrogen (), with a strong triple covalent bond, in the air is converted into ammonia () or related nitrogenous compounds, typically in soil or aquatic systems but also in industry. At .... Common names include shore medick, water medick, coastal medick, and strand medick. Gallery Image:Medicago_littoralis,_Portugal,_Algarve.jpg Image:Medicago littoralis1.jpg Image:Meli5 001 lhp.jpg, seed pods References External links International Legume Database & Information Services littoralis Flora of Malta {{Trifolieae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triterpenoid Saponin
Saponins (Latin "sapon", soap + "-in", one of), also selectively referred to as triterpene glycosides, are bitter-tasting usually toxic plant-derived organic chemicals that have a foamy quality when agitated in water. They are widely distributed but found particularly in soapwort (genus Saponaria), a flowering plant, the soapbark tree ('' Quillaja saponaria'') and soybeans (''Glycine max'' L.). They are used in soaps, medicinals, fire extinguishers, speciously as dietary supplements, for synthesis of steroids, and in carbonated beverages (the head on a mug of root beer). Structurally, they are glycosides, sugars bonded to another organic molecule, usually a steroid or triterpene, a steroid building block. Saponins are both water and fat soluble, which gives them their useful soap properties. Some examples of these chemicals are glycyrrhizin, licorice flavoring; and quillaia (alt. quillaja), a bark extract used in beverages. Uses The saponins are a subclass of terpenoids, the lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Systematic Biology
Biological systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: cladograms, phylogenetic trees, phylogenies). Phylogenies have two components: branching order (showing group relationships) and branch length (showing amount of evolution). Phylogenetic trees of species and higher taxa are used to study the evolution of traits (e.g., anatomical or molecular characteristics) and the distribution of organisms ( biogeography). Systematics, in other words, is used to understand the evolutionary history of life on Earth. The word systematics is derived from the Latin word ''systema,'' which means systematic arrangement of organisms. Carl Linnaeus used 'Systema Naturae' as the title of his book. Branches and applications In the study of biological systematics, researchers use the different branches to further understand the relations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trigonella
''Trigonella'' is a genus from the family Fabaceae. The best known member is the herb fenugreek. Members of the genus occur naturally in the Canary Islands, southern Europe, nontropical Africa, western and central Asia, the Indian subcontinent, and Australia. Species Currently accepted species include: *''Trigonella adscendens'' (Nevski) Afan. & Gontsch. *''Trigonella afghanica'' Vassilcz. *''Trigonella anguina'' Delile *''Trigonella aphanoneura'' Rech.f. *''Trigonella arabica'' Delile *''Trigonella aristata'' Vassilcz. *''Trigonella bactriana'' Vassilcz. *''Trigonella badachschanica'' Afan. *''Trigonella bakhtiarica'' Ranjbar & Z.Hajmoradi *''Trigonella balachowskyi'' Leredde *''Trigonella balansae'' Boiss. & Reut. *''Trigonella berythea'' Boiss. & Blanche *''Trigonella binaloudensis'' Ranjbar & Karamian *''Trigonella cachemiriana'' Cambess. *'' Trigonella caelesyriaca'' Boiss. *'' Trigonella caerulea'' ( L.) Ser. *''Trigonella calliceras'' Fisch. ex M.Bieb. *''Trigonella capi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lotus (genus)
''Lotus'', a latinization of Greek '' lōtos'' (), is a genus of flowering plants that includes most bird's-foot trefoils (also known as bacon-and-eggs) and deervetches and contains many dozens of species distributed worldwide. Depending on the taxonomic authority, roughly between 70 and 150 are accepted. ''Lotus'' is a genus of legumes and its members are adapted to a wide range of habitats, from coastal environments to high altitudes. The genus ''Lotus'' is currently undergoing extensive taxonomic revision. Species native to the Americas have been moved into other genera, such as '' Acmispon'' and ''Hosackia'', as in the second edition of '' The Jepson Manual''. The aquatic plant commonly known as the Indian or sacred lotus is '' Nelumbo nucifera'', a species not closely related to ''Lotus''. Description Most species have leaves with five leaflets; two of these are at the extreme base of the leaf, with the other three at the tip of a naked midrib. This gives the appeara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycine (plant)
''Glycine'' (soybean or soya bean) is a genus in the bean family Fabaceae. The best known species is the cultivated soybean (''Glycine max''). While the majority of the species are found only in Australia, the soybean's native range is in East Asia. A few species extend from Australia to East Asia (e.g., ''G. tomentella'' and ''G. tabacina''). ''Glycine'' species are used as food plants by the larvae of some Lepidoptera species: the engrailed, nutmeg and turnip moths have all been recorded on soybean. Species Subgenus ''Glycine'' *''Glycine albicans'' Tindale & Craven *'' Glycine aphyonota'' B.E.Pfeil *'' Glycine arenaria'' Tindale *'' Glycine argyrea'' Tindale *'' Glycine canescens'' F.J.Herm. *''Glycine clandestina'' J.C.Wendl. *'' Glycine curvata'' Tindale *'' Glycine cyrtoloba'' Tindale *'' Glycine falcata'' Benth. *'' Glycine gracei'' B.E.Pfeil & Craven *''Glycine hirticaulis'' Tindale & Craven **'' Glycine hirticaulis subsp. leptosa'' B.E.Pfeil *'' Glycine lactovir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syria
Syria ( ar, سُورِيَا or سُورِيَة, translit=Sūriyā), officially the Syrian Arab Republic ( ar, الجمهورية العربية السورية, al-Jumhūrīyah al-ʻArabīyah as-Sūrīyah), is a Western Asian country located in the Eastern Mediterranean and the Levant. It is a unitary republic that consists of 14 governorates (subdivisions), and is bordered by the Mediterranean Sea to the west, Turkey to the north, Iraq to the east and southeast, Jordan to the south, and Israel and Lebanon to the southwest. Cyprus lies to the west across the Mediterranean Sea. A country of fertile plains, high mountains, and deserts, Syria is home to diverse ethnic and religious groups, including the majority Syrian Arabs, Kurds, Turkmens, Assyrians, Armenians, Circassians, Albanians, and Greeks. Religious groups include Muslims, Christians, Alawites, Druze, and Yazidis. The capital and largest city of Syria is Damascus. Arabs are the largest ethnic group, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Journal Of Botany
''Botany'' is a monthly peer-reviewed scientific journal that is published by Canadian Science Publishing. It was established in 1935 as the ''Canadian Journal of Research, Section C: Botanical Sciences'' and renamed in 1951 as ''Canadian Journal of Botany''. It covers research on all aspects of botany. The journal was selected as one of the DBIO 100, the 100 most influential journals in biology and medicine over the last 100 years, as voted by the BioMedical & Life Sciences Division of the Special Libraries Association on the occasion of its centennial. The are [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-pollination
Self-pollination is a form of pollination in which pollen from the same plant arrives at the stigma of a flower (in flowering plants) or at the ovule (in gymnosperms). There are two types of self-pollination: in autogamy, pollen is transferred to the stigma of the same flower; in geitonogamy, pollen is transferred from the anther of one flower to the stigma of another flower on the same flowering plant, or from microsporangium to ovule within a single (monoecious) gymnosperm. Some plants have mechanisms that ensure autogamy, such as flowers that do not open ( cleistogamy), or stamens that move to come into contact with the stigma. The term selfing that is often used as a synonym, is not limited to self-pollination, but also applies to other types of self-fertilization. Occurrence Few plants self-pollinate without the aid of pollen vectors (such as wind or insects). The mechanism is seen most often in some legumes such as peanuts. In another legume, soybeans, the flowers ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Outcrossing
Out-crossing or out-breeding is the technique of crossing between different breeds. This is the practice of introducing distantly related genetic material into a breeding line, thereby increasing genetic diversity. Outcrossing can be a useful technique in animal breeding. The outcrossing breeder intends to remove the traits by using "new blood." With dominant traits, one can still see the expression of the traits and can remove those traits whether one outcrosses, line breeds or inbreeds. With recessive traits, outcrossing allows for the recessive traits to migrate across a population. Many traits are Mendelian and therefore exhibit a more complicated intermediate phenotype. The outcrossing breeder then may have individuals that have many deleterious genes that may be expressed by subsequent inbreeding. There is now a gamut of deleterious genes within each individual in many dog breeds. Increasing the variation of genes or alleles within the gene pool may protect against exti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
