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Chelois
Chelois () is a variety of hybrid grape used in the production of red wines. The fruit are small blue-black berries, which appear in compact, medium-sized clusters. Chelois is among the less hardy hybrids of red-wine grapes. History and origins Chelois is an interspecific hybrid developed by viticulturist Albert Seibel in Ardèche, France. It was one of thousands of French-American hybrid grapes developed by scientists to combat powdery mildew and phylloxera, which infiltrated France in the 18th century. The naturally resistant American grape ''Vitis labrusca'' was combined with Europe's ''Vitis vinifera'' to prevent the eradication of Europe's vineyards. It was introduced to Canada in 1946 and was registered in the United States in 1948. There is anecdotal evidence that it existed in Oregon prior to 1946. It largely disappeared within the next decade, due to its susceptibility to Tomato Ringspot Virus. Offspring In 1974, Chelois was crossed with Elvira (a white grape) to pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Grape
Hybrid grapes are grape varieties that are the product of a Hybrid (biology), crossing of two or more ''Vitis'' species. This is in contrast to crossings between grape varieties of the same species, typically ''Vitis vinifera'', the European grapevine. Hybrid grapes are also referred to as inter-specific crossings or "Modern Varieties." Due to their often excellent tolerance to powdery mildew, other fungal diseases, nematodes, and phylloxera, hybrid varieties have, to some extent, become a renewed focus for European breeding programs. The recently developed varieties, Rondo grape, Rondo, and Regent grape, Regent are examples of newer hybrid grape varieties for European viticulturalists. Several North American breeding programs, such as those at Cornell and the University of Minnesota, focus exclusively on hybrid grapes, with active and successful programs, having created hundreds if not thousands of new varieties. Hybrid varieties exhibit a mix of traits from their European, Asiat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert Seibel
Albert Seibel (1844–1936) was a French physician and viticulturist who made hybrid crosses of European wine grapes (''Vitis vinifera'') with native North American grapes. His crosses are known as Seibel grapes. Biography Seibel was born in Aubenas in the Ardeche in 1844. In 1895, he founded a school to teach grafting methods. He died in 1936. Breeding programme In the 1860s the Phylloxera plague cut European wine production by more than two-thirds. As the pest originated in the New World, crossing American stock with European ''Vitis vinifera'' varieties was one of the promising attempts to contain the disaster. The vines produced by this hybridization did not necessarily produce better wines, but did produce vine stock that could better survive Phylloxera attacks. Seibel and his company produced over 16,000 new hybrids, with nearly 500 varieties that were then grown commercially. He often used as a female parent the hybrid Jaeger 70, a cross between ''Vitis lincecumii' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylloxera
Grape phylloxera is an insect pest of commercial grapevines worldwide, originally native to eastern North America. Grape phylloxera (''Daktulosphaira vitifoliae'' (Fitch 1855) belong to the family Phylloxeridae, within the order Hemiptera, bugs); originally described in France as ''Phylloxera vastatrix''; equated to the previously described ''Daktulosphaera vitifoliae'', ''Phylloxera vitifoliae''. The insect is commonly just called phylloxera (; from grc, φύλλον, leaf, and , dry). These almost microscopic, pale yellow sap-sucking insects, related to aphids, feed on the roots and leaves of grapevines (depending on the phylloxera genetic strain). On ''Vitis vinifera'', the resulting deformations on roots ("nodosities" and "tuberosities") and secondary fungal infections can girdle roots, gradually cutting off the flow of nutrients and water to the vine.Wine & Spirits Education Trust ''"Wine and Spirits: Understanding Wine Quality"'' pgs 2-5, Second Revised Edition (2012), Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon City, Oregon
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Canker
A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticulture. Their causes include a wide range of organisms as fungi, bacteria, mycoplasmas and viruses. The majority of canker-causing organisms are bound to a unique host species or genus, but a few will attack other plants. Weather and animals can spread canker, thereby endangering areas that have only slight amount of canker. Although fungicides or bactericides can treat some cankers, often the only available treatment is to destroy the infected plant to contain the disease. Examples * Apple canker, caused by the fungus ''Neonectria galligena'' * Ash bacterial canker, now understood to be caused by the bacterium '' Pseudomonas savastanoi'', rather than ''Pseudomonas syringae''. After DNA-relatedness studies ''Pseudomonas savastanoi'' has bee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Rot (grape Disease)
Grape black rot is a fungal disease caused by an ascomycetous fungus, ''Guignardia bidwellii'', that attacks grape vines during hot and humid weather. “Grape black rot originated in eastern North America, but now occurs in portions of Europe, South America, and Asia. It can cause complete crop loss in warm, humid climates, but is virtually unknown in regions with arid summers.” The name comes from the black fringe that borders growing brown patches on the leaves. The disease also attacks other parts of the plant, “all green parts of the vine: the shoots, leaf and fruit stems, tendrils, and fruit. The most damaging effect is to the fruit”. Grape black rot affects many grape growers throughout the United States, therefore, it is important to understand the disease life cycle and environmental conditions to best manage the disease. Once infection takes place, different methods are available to control the disease. Disease cycle ] --> The disease cycle begins with the overw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrobacterium
''Agrobacterium'' is a genus of Gram-negative bacteria established by H. J. Conn that uses horizontal gene transfer to cause tumors in plants. ''Agrobacterium tumefaciens'' is the most commonly studied species in this genus. ''Agrobacterium'' is well known for its ability to transfer DNA between itself and plants, and for this reason it has become an important tool for genetic engineering. Nomenclatural History Leading up to the 1990s, the genus ''Agrobacterium'' was used as a wastebasket taxon. With the advent of 16S sequencing, many ''Agrobacterium'' species (especially the marine species) were reassigned to genera such as ''Ahrensia'', ''Pseudorhodobacter'', ''Ruegeria'', and ''Stappia''. The remaining ''Agrobacterium'' species were assigned to three biovars: biovar 1 (''Agrobacterium tumefaciens''), biovar 2 (''Agrobacterium rhizogenes''), and biovar 3 (''Agrobacterium vitis''). In the early 2000s, ''Agrobacterium'' was synonymized with the genus ''Rhizobium''. This move pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botrytis Cinerea
''Botrytis cinerea'' is a necrotrophic fungus that affects many plant species, although its most notable hosts may be wine grapes. In viticulture, it is commonly known as "botrytis bunch rot"; in horticulture, it is usually called "grey mould" or "gray mold". The fungus gives rise to two different kinds of infections on grapes. The first, grey rot, is the result of consistently wet or humid conditions, and typically results in the loss of the affected bunches. The second, noble rot, occurs when drier conditions follow wetter, and can result in distinctive sweet dessert wines, such as Sauternes (wine), Sauternes or the Aszú of Tokaji/Grasă de Cotnari. The species name ''Botrytis cinerea'' is derived from the Latin for "grapes like ashes"; although poetic, the "grapes" refers to the bunching of the fungal spores on their Conidium, conidiophores, and "ashes" just refers to the greyish colour of the spores ''en masse''. The fungus is usually referred to by its anamorph (asexual form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Grape
A grape is a fruit, botanically a berry (botany), berry, of the deciduous woody vines of the flowering plant genus ''Vitis''. Grapes are a non-Climacteric (botany), climacteric type of fruit, generally occurring in clusters. The cultivation of grapes began perhaps 8,000 years ago, and the fruit has been used as human food over history. Eaten fresh or in dried form (as raisins, Zante currant, currants and Sultana (grape), sultanas), grapes also hold cultural significance in many parts of the world, particularly for their role in winemaking. Other grape-derived products include various types of jam, juice, vinegar and oil. History The Middle East is generally described as the homeland of grape and the cultivation of this plant began there 6,000–8,000 years ago. Yeast (wine), Yeast, one of the earliest domesticated microorganisms, occurs naturally on the skins of grapes, leading to the discovery of alcoholic drinks such as wine. The earliest archeological evidence for a domi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ventura Grape
Ventura (Italian, Portuguese and Spanish for "fortune") may refer to: Places ; Brazil * Boa Ventura de São Roque, a municipality in the state of Paraná, southern Brazil * Boa Ventura, Paraíba, a municipality in the state of Paraíba, in the northeast region of Brazil ; United States * Ventura, California * Ventura County, California * Ventura Boulevard, in the San Fernando Valley of Los Angeles, California * Buenaventura Lakes, Florida, a census-designated place (CDP) in northern Osceola County, Florida * Ventura, Iowa, a city in Cerro Gordo County, Iowa * Ventura Village, Minneapolis, a neighborhood within the Phillips community in Minneapolis * Ventura, Minnesota, former name of St. Augusta, Minnesota * Ventura, New Mexico, a census-designated place in Luna County, New Mexico, United States. People ; Surname * Amy Austria-Ventura (born 1961), Filipino film and television actress * Andrey da Silva Ventura (born 1993), Brazilian football goalkeeper * Angiolino Giusepp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomato Ringspot Virus
Tomato ringspot virus (ToRSV) is a plant pathogenic virus of the family ''Secoviridae''. It affects species of cucumber, tobacco, tomato, cowpea, among others. It causes ringspots in tobacco plants and raspberries, yellow bud mosaic in peaches, yellow vein in grapes, and stunted growth in ''gladiolus'' and '' Narcissus''. Its range is in the temperate regions of North America, especially where its vector, ''Xiphinema americanum'' is present. Along with the adult and larval stages of this nematode, the virus is also spread by seed. This type of infection is more common in strawberries and soybeans than any other susceptible plant. See also * Viral diseases of potato Viral diseases of potato are a group of diseases caused by different types of viruses that affect potato crops worldwide and, although they do not affect human or animal health since they are viruses that only infect vegetables, they are a source o ... References External links *Descriptions of Plant VirusesTomat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitis Vinifera
''Vitis vinifera'', the common grape vine, is a species of flowering plant, native to the Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran. There are currently between 5,000 and 10,000 varieties of ''Vitis vinifera'' grapes though only a few are of commercial significance for wine and table grape production. The wild grape is often classified as ''Vitis vinifera'' ''sylvestris'' (in some classifications considered ''Vitis sylvestris''), with ''Vitis vinifera'' ''vinifera'' restricted to cultivated forms. Domesticated vines have hermaphrodite flowers, but ''sylvestris'' is dioecious (male and female flowers on separate plants) and pollination is required for fruit to develop. Grapes can be eaten fresh or dried to produce raisins, sultanas, and currants. Grape leaves are used in the cuisine of many cultures. The fresh grapes can also be processed into juice that is fermented to make wine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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