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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 Hybrid (biology), 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, Tomato Ringspot Virus. Offspring In 1974, Chelois was c ... [...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-species 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, Asiati ... [...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 Ardèche department in Southern France 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylloxera
Grape phylloxera is an insect pest of grapevines worldwide, originally native to eastern North America. Grape phylloxera (''Daktulosphaira vitifoliae'' (Fitch 1855) belongs 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 , 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), London, Nymphs also for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon City, Oregon
Oregon City is the county seat of Clackamas County, Oregon, United States, located on the Willamette River near the southern limits of the Portland metropolitan area. As of the 2020 census, the city population was 37,572. Established in 1829 by the Hudson's Bay Company, in 1844, it became the first U.S. city west of the Rocky Mountains to be incorporated. History Known in recent decades as the site of several large paper mills on the Willamette River, the city played a significant role in the early history of the Oregon Country. It was established by Hudson's Bay Company's Dr. John McLoughlin in 1829 near the confluence of the Clackamas River with the Willamette to take advantage of the power of Willamette Falls to run a lumber mill. During the 1840s and 1850s it was the destination for those wanting to file land claims after traveling the Oregon Trail as the last stop on the trail. It was the capital of the Oregon Territory from its establishment in 1848 until 1851, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 (via frost or windstorm damage) and animal damage can also cause stress to the plant resulting in cankers. Other causes of cankers is pruning when the bark is wet or using un-sterilized tools. 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'' formerly Nectria galligena. * Ash bacterial canker, now understood to be caused by the bacterium '' Pseu ... [...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 World, 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 overwinteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrobacterium
''Agrobacterium'' is a genus of Gram-negative bacteria established by Harold J. Conn, 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 ribosomal RNA, 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 g ... [...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, the Aszú of Tokaji, or 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 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) name, because ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Grape
A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus ''Vitis''. Grapes are a non- climacteric type of fruit, generally occurring in clusters. The cultivation of grapes began approximately 8,000 years ago, and the fruit has been used as human food throughout its history. Eaten fresh or in dried form (as raisins, currants and 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 grapes and the cultivation of this plant began there 6,000–8,000 years ago. 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 dominant position of wine-making in human culture dates from 8, ... [...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 A medium size city in southern California * Ventura County, California A county located in southern California, next to Los Angeles County * 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 * Adriana Ventura (born 1969), Brazilian politic ... [...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 Vector most often refers to: * Euclidean vector, a quantity with a magnitude and a direction * Disease vector, an agent that carries and transmits an infectious pathogen into another living organism Vector may also refer to: Mathematics a ..., '' 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 References External links *Descriptions of Plant VirusesTom ... [...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 Basin, Mediterranean region, Central Europe, and southwestern Asia, from Morocco and Portugal north to southern Germany and east to northern Iran. , there were between List of grape varieties, 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#Plants, hermaphrodite flowers, but ''sylvestris'' is plant sexuality, 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, Sultana (grape)#Raisins, sultanas, and Zante currant, currants. Grape leaves are used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
