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Aegilops
''Aegilops'' is a genus of Eurasian and North American plants in the grass family, Poaceae. They are known generally as goatgrasses.''Aegilops''. Integrated Taxonomic Information System (ITIS). Some species are known as invasive s in parts of .Watson, L. and M. J. Dallwitz. 1992 onwards ''Aegilops''. The Grass Genera of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Tauschii 04363
''Aegilops'' is a genus of Eurasian and North American plants in the grass family, Poaceae. They are known generally as goatgrasses.''Aegilops''. Integrated Taxonomic Information System (ITIS). Some species are known as invasive s in parts of .Watson, L. and M. J. Dallwitz. 1992 onwards ''Aegilops''. The Grass Genera of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Triuncialis
''Aegilops triuncialis'', or barbed goatgrass, is a grass species of the family Poaceae. It is a winter annual native to many areas in Eastern and Mediterranean Europe and Western Asia. It is considered an introduced, invasive species in North America, mainly in the Western coast of the United States. In its native lands, the grass thrives in mainly rocky, serpentine soil, but also does well in grasslands and ruderal/disturbed ground as well as oak woodlands. Description Barbed goatgrass grows to be about tall with few to many rigid, loosely erect aerial stems (culms). In late spring the plant produces rigid flower spikes consisting of three to six spikelets bearing long, stiff awns which assist in seed distribution. When the grass matures, the spikelets fall off in their entirety to germinate on the ground, and the long awns which give the plant its name assist in dispersal by animals, wind or water. As an invasive species Barbed goatgrass was introduced to North A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Tauschii
''Aegilops tauschii'', the Tausch's goatgrass or rough-spike hard grass, is an annual grass species. It is native to Crimea, the Caucasus region, western and Central Asia, Afghanistan, Pakistan, the western Himalaya, and parts of China, and has been introduced to other locales, including California. Taxonomy ''Aegilops tauschii'' is part of the tribe Triticeae, along with wheat. It is a diploid (2n=2x=14, DD) goat grass species which has contributed the D genome to common wheat 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. Ta .... Subspecies The following subspecies are accepted: *''Aegilops tauschii'' subsp. ''strangulata'' – western part of range *''Aegilops tauschii'' subsp. ''tauschii'' References tauschii Wheat Grasses of Asia Flora of the Crimean Peninsula Flora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Of Wheat
During 10,000 years of cultivation, numerous forms of wheat, many of them hybrids, have developed under a combination of artificial and natural selection. This diversity has led to much confusion in the naming of wheats. This article explains how genetic and morphological characteristics of wheat influence its classification, and gives the most common botanical names of wheat in current use (see ). Information on the cultivation and uses of wheat is at the main wheat page. ''Aegilops'' and ''Triticum'' The genus ''Triticum'' includes the wild and domesticated species usually thought of as wheat. In the 1950s growing awareness of the genetic similarity of the wild goatgrasses (''Aegilops'') led botanists such as Bowden to amalgamate ''Aegilops'' and ''Triticum'' as one genus, ''Triticum''. This approach is still followed by some (mainly geneticists), but has not been widely adopted by taxonomists. ''Aegilops'' is morphologically highly distinct from ''Triticum'', with rounded rat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Bicornis
''Aegilops bicornis'' (syn. ''Aegilops bicorne'' (misapplied), ''Triticum bicorne'' Forssk.) is a species in the family Poaceae native to Palestine (region), Palestine and the Levant. Elsewhere this plant is commonly considered a weed. References External links''Aegilops bicornis''photo USDA Plants Profile: ''Aegilops bicornis'' Aegilops, bicornis Flora of Palestine (region) Flora of Western Asia {{Pooideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheat
Wheat is a grass widely cultivated for its seed, a cereal grain that is a worldwide staple food. The many species of wheat together make up the genus ''Triticum'' ; the most widely grown is common wheat (''T. aestivum''). The archaeological record suggests that wheat was first cultivated in the regions of the Fertile Crescent around 9600 BCE. Botanically, the wheat kernel is a type of fruit called a caryopsis. Wheat is grown on more land area than any other food crop (, 2014). World trade in wheat is greater than for all other crops combined. In 2020, world production of wheat was , making it the second most-produced cereal after maize. Since 1960, world production of wheat and other grain crops has tripled and is expected to grow further through the middle of the 21st century. Global demand for wheat is increasing due to the unique viscoelastic and adhesive properties of gluten proteins, which facilitate the production of processed foods, whose consumption is inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Geniculata
''Aegilops geniculata'' is a species of grass known by the common name ovate goatgrass. It is native to the Mediterranean and western Asia, including Palestine and the Levant. Elsewhere it is known as a noxious weed A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is injurious to agricultural or horticultural crops, natural habitats or ecosystems, or humans or liv .... 250px, right External linksJepson Manual Treatment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aegilops Cylindrica
''Aegilops cylindrica'', also known as jointed goatgrass. is an annual grass seed that is part of the tribe Triticeae, along with wheat and some other cereals. It is not native to North America, however it has become a serious issue as a weed since it was introduced in the late 19th century. Due to its relation to winter wheat, it is very difficult to control. Not only are the joints similar in shape and size to the seeds of winter wheat, making it difficult to remove through grain cleaning methods, the shared genetics mean that no registered herbicides are available to single out jointed goatgrass while leaving winter wheat unharmed. This poses problems for farmers who have to suffer through reduced yields and poorer quality winter wheat. History and distribution Jointed goatgrass is a winter annual grass seed native to Southern Europe and Russia, It is considered a problem weed in United States, where it is now widely spread across western and central regions. It entered the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Wheat
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 Phylogeny Bread wheat is an allohexaploid (an allopolyploid with six sets of chromosomes: two sets from each of three different species). Of the six sets of chromosomes, two come from ''Triticum urartu'' (einkorn wheat) and two from a species related to ''Aegilops speltoides''. This spontaneous hybridisation created the tetraploid species ''Triticum turgidum'' (an ancestor of wild emmer wheat and durum wheat) 580,000–820,000 years ago. The last two sets of chromosomes came from wild goat-gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emmer
Emmer wheat or hulled wheat is a type of awned wheat. Emmer is a tetraploid (4''n'' = 4''x'' = 28 chromosomes). The domesticated types are ''Triticum turgidum'' subsp. ''dicoccum'' and ''Triticum turgidum ''conv.'' durum''. The wild plant is called ''Triticum turgidum'' subsp. ''dicoccoides''. The principal difference between the wild and the domestic is that the ripened seed head of the wild plant shatters and scatters the seed onto the ground, while in the domesticated emmer the seed head remains intact, thus making it easier for humans to harvest the grain. Along with einkorn wheat, emmer was one of the first crops domesticated in the Near East. It was widely cultivated in the ancient world, but is now a relict crop in mountainous regions of Europe and Asia. Emmer is considered a type of ''farro'' food especially in Italy. Taxonomy Strong similarities in morphology and genetics show that wild emmer (''Triticum dicoccoides'' Koern.) is the wild ancestor and a crop wild r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species
An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food webfor example the purple sea urchin (''Strongylocentrotus purpuratus'') which has decimated kelp forests along the northern California coast due to overharvesting of its natural predator, the California sea otter (''Enhydra lutris''). Since the 20th century, invasive species have become a serious economic, social, and environmental threat. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
