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Peronospora Schachtii
''Peronospora farinosa'' f.sp. ''betae'' is a forma specialis ''Forma specialis'' (plural: ''formae speciales''), abbreviated f. sp. (plural ff. spp.) without italics, is an informal taxonomic grouping allowed by the International Code of Nomenclature for algae, fungi, and plants, that is applied to a par ... of '' Peronospora farinosa'', attacking sugar beet. References External links Index FungorumUSDA ARS Fungal Database {{DEFAULTSORT:Peronospora Farinosa F.Sp. Betae Water mould plant pathogens and diseases Food plant pathogens and diseases Peronosporales Forma specialis taxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julius Kühn
Julius Gotthelf Kühn (23 October 1825 – 14 April 1910) was a German academic and agronomist and he was one of the founders of Plant Pathology. Kuhn's father was a land owner and he gained experience in agriculture and botany on his father's land. He was trained in Bonn, starting at age 30 and was awarded his doctorate, which focused on diseases of beet and canola at Leipzig. In 1862, he became a professor of agriculture at the University of Halle. Kuhn published more than 70 papers on mycology and plant pathology over the course of his career. One of his seminar papers was the 1858 publication "Die Krankheiten der Kultergewachse". He was honoured in 1898, when botanist Paul Wilhelm Magnus circumscribed ''Kuehneola'', which is a genus of rust fungi in the family Phragmidiaceae The Phragmidiaceae are a family of rust fungi in the order Pucciniales. The family contains 14 genera and 164 species. Genera *'' Arthuriomyces'' *'' Frommeella'' *''Gerwasia'' *'' Gymnoconia'' *''Ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Wilhelm Gottlieb Leopold Fuckel
Karl Wilhelm Gottlieb Leopold Fuckel (3 February 1821 – 8 May 1876) was a German botanist who worked largely on fungi. He worked as an apothecary from 1836 to 1852, afterwards deriving income from a vineyard he owned in Oestrich im Rheingau.ADB:Fuckel, Leopold @ The species epithet in the binomen '''', a plant pathogen and the causal agent of disease, was named ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forma Specialis
''Forma specialis'' (plural: ''formae speciales''), abbreviated f. sp. (plural ff. spp.) without italics, is an informal taxonomic grouping allowed by the International Code of Nomenclature for algae, fungi, and plants, that is applied to a parasite (most frequently a fungus) which is adapted to a specific host. This classification may be applied by authors who do not feel that a subspecies or variety name is appropriate, and it is therefore not necessary to specify morphological differences that distinguish this form. The literal meaning of the term is 'special form', but this grouping does not correspond to the more formal botanical use of the taxonomic rank of ''forma'' or form. An example is ''Puccinia graminis'' f. sp. ''avenae'', which affects oats. An alternative term in contexts not related to biological nomenclature is physiological race (sometimes also given as biological race, and in that context treated as synonymous with biological form), Previously: Previously: e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peronospora Farinosa
''Peronospora farinosa'' is a species name that has been widely applied to downy mildew on leaves of wild and cultivated ''Amaranthaceae'': ''Amaranthus'', ''Atriplex'', ''Bassia'', ''Beta'', ''Chenopodium'', ''Halimione'', ''Salsola'', ''Spinacia'', etc. However, the species name has been taxonomically rejectedsee report 20 from the Nomenclature Committee for fungi) as the original description contained reference to multiple species and could not unequivocally be attributed to a species of Peronospora. In the past, some of the species on important crop plants have been given names as ''formae speciales'', notably '' f.sp. betae'' on sugar beet (= ''P. schachtii'') and f.sp. ''spinaciae'' on spinach (= ''P. effusa''). However, phylogentic reconstructions have revealed that these "forms" of ''Peronospora'' on different genera and their subdivisions, are distinct species, most of which already have previously published scientific names (see ''Index Fungorum''). Such host specializat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Beet
A sugar beet is a plant whose root contains a high concentration of sucrose and which is grown commercially for sugar production. In plant breeding, it is known as the Altissima cultivar group of the common beet (''Beta vulgaris''). Together with other beet cultivars, such as beetroot and chard, it belongs to the subspecies ''Beta vulgaris'' subsp. ''vulgaris.'' Its closest wild relative is the sea beet (''Beta vulgaris'' subsp. ''maritima''). Sugar beets are grown in climates that are too cold for sugar cane. The low sugar content of the beets makes growing them a marginal proposition unless prices are relatively high. In 2020, Russia, the United States, Germany, France and Turkey were the world's five largest sugar beet producers. In 2010–2011, Europe, and North America except Arctic territories failed to supply the overall domestic demand for sugar and were all net importers of sugar. The US harvested of sugar beets in 2008. In 2009, sugar beets accounted for 20% of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Mould Plant Pathogens And Diseases
Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food, energy or organic micronutrients. Its chemical formula, H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. "Water" is also the name of the liquid state of H2O at standard temperature and pressure. A number of natural states of water exist. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor. Water co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food Plant Pathogens And Diseases
Food is any substance consumed by an organism for nutritional support. Food is usually of plant, animal, or fungal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy, maintain life, or stimulate growth. Different species of animals have different feeding behaviours that satisfy the needs of their unique metabolisms, often evolved to fill a specific ecological niche within specific geographical contexts. Omnivorous humans are highly adaptable and have adapted to obtain food in many different ecosystems. The majority of the food energy required is supplied by the industrial food industry, which produces food with intensive agriculture and distributes it through complex food processing and food distribution systems. This system of conventional agriculture relies heavily on fossil fuels, which means that the food and agricultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peronosporales
The Peronosporales are an order of water moulds (class Oomycetes) which can be pathogenic. Many diseases of plants are sometimes classified under this order, but are sometimes considered members of order Pythiales. Some of these pathogenic protists include the organisms responsible for potato blight, eucalyptus dieback, sudden oak death, and blue mold ''Peronospora hyoscyami'' f.sp. ''tabacina'' is a plant pathogen infecting tobacco that causes blue mold. It is an oomycete (a fungus-like organism) that is highly destructive toward seed plants. It is very prevalent in humid farming zones, .... Further genetic studies may place these organisms more definitively in one order or another. References Heterokont orders {{plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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