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Nicotiana × Sanderae
''Nicotiana'' × ''sanderae'' is a hybrid of the tobacco species '' Nicotiana alata'' and '' Nicotiana forgetiana''. It is the most common ''Nicotiana'' variety found and sold in the United Kingdom. ''Nicotiana'' × ''sanderae'' requires soft soil mixed with sand to thrive. The plant will grow to heights of and will give off a sweet scent in the evening, like most ''Nicotiana'' plants. ''Nicotiana'' × ''sanderae'' is not hardy against frost and will die if it comes in contact with it; however, it withstands drought. Because of its size, ''N.'' × ''sanderae'' is used as a house or garden plant. An analytical study published in 1963 concluded that ''N.'' × ''sanderae'' leaves have a low nicotine Nicotine is a natural product, naturally produced alkaloid in the nightshade family of plants (most predominantly in tobacco and ''Duboisia hopwoodii'') and is widely used recreational drug use, recreationally as a stimulant and anxiolytic. As ... concentration and a moderately lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Watson (botanist)
William Watson (1858–1925) was a British botanist and horticulturist. He was a gardener at the Royal Botanic Gardens, Kew from 1879, Assistant Curator 1886–1901 and Curator 1901–1922. Watson was awarded the Veitch Memorial Medal in 1892 and elected as an Associate of the Linnean Society in 1904. The species Hebenstretia ''Hebenstretia'' is a genus of flowering plants in the family Scrophulariaceae, native to Africa. They are annual or perennial herbs or shrubs, found in mesic habitat In ecology, a mesic habitat is a type of habitat with a moderate or well-balan ... watsonii was named in his honour. See also * :Taxa named by William Watson (botanist) References External links * * English botanists English taxonomists 1858 births 1925 deaths Botanists active in Kew Gardens 19th-century British botanists 20th-century British botanists {{Botanist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tobacco
Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the chief commercial crop is ''N. tabacum''. The more potent variant ''N. rustica'' is also used in some countries. Dried tobacco leaves are mainly used for smoking in cigarettes and cigars, as well as pipes and shishas. They can also be consumed as snuff, chewing tobacco, dipping tobacco, and snus. Tobacco contains the highly addictive stimulant alkaloid nicotine as well as harmala alkaloids. Tobacco use is a cause or risk factor for many deadly diseases, especially those affecting the heart, liver, and lungs, as well as many cancers. In 2008, the World Health Organization named tobacco use as the world's single greatest preventable cause of death. Etymology The English word ''tobacco'' originates from the Spanish word "tabaco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicotiana Alata
''Nicotiana alata'' is a species of tobacco. It is called jasmine tobacco, sweet tobacco, winged tobacco, ''tanbaku'', and Persian tobacco. ''Nictoiana alata'' is mainly grown as an ornamental plant; numerous cultivars and hybrids are derived from it. In Iran, narghila tobacco is sometimes produced from ''N. alata''; it is not chopped like cigarette tobacco, but broken up by hand. *Flowering season: Summer to fall *Light requirements: Sun to partial shade *Flower color: Lime green, maroon red, white, yellow, pink, and crimson *Height: 30 to 60 cm 2 to 24 inches*Spacing: 30 to 40 cm 2 to 14 inches*Comments: Low drought tolerance Has a lovely fragrance in the evening to night. Most varieties bloom late-afternoon to evening. Seedlings do best when gradually introduced to outdoor environment over the course of a week. Plants tend to self-sow. (Color may be the original or occasionally several colors on one plant). Deadhead A Deadhead or Dead Head is a fan of the Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicotiana Forgetiana
''Nicotiana'' () is a genus of herbaceous plants and shrubs in the family Solanaceae, that is indigenous to the Americas, Australia, Southwestern Africa and the South Pacific. Various ''Nicotiana'' species, commonly referred to as tobacco plants, are cultivated as ornamental garden plants. '' N. tabacum'' is grown worldwide for the cultivation of tobacco leaves used for manufacturing and producing tobacco products, including cigars, cigarillos, cigarettes, chewing tobacco, dipping tobacco, snuff, and snus. Taxonomy Species The 79 accepted species include: * '' Nicotiana acuminata'' (Graham) Hook. – manyflower tobaccoKnapp et al. (2004) Nomenclatural changes and a new sectional classification in Nicotiana (Solanaceae) Taxon. 53(1):73-82. * '' Nicotiana africana'' Merxm. * '' Nicotiana alata'' Link & Otto – jasmine tobacco, sweet tobacco, winged tobacco, Persian tobacco, ''tanbaku'' (in Persian) * '' Nicotiana attenuata'' Torrey ex S. Watson – coyo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between the Kingdom of England (which included Wales, annexed in 1542) and the Kingdom of Scotland in 170 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) to ice (a solid) as the water vapor reaches the freezing point. In temperate climates, it most commonly appears on surfaces near the ground as fragile white crystals; in cold climates, it occurs in a greater variety of forms. The propagation of crystal formation occurs by the process of nucleation. The ice crystals of frost form as the result of fractal process development. The depth of frost crystals varies depending on the amount of time they have been accumulating, and the concentration of the water vapor (humidity). Frost crystals may be invisible (black), clear (translucent), or white; if a mass of frost crystals scatters light in all directions, the coating of frost appears white. Types of frost include crystalline frost (hoar fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicotine
Nicotine is a naturally produced alkaloid in the nightshade family of plants (most predominantly in tobacco and ''Duboisia hopwoodii'') and is widely used recreationally as a stimulant and anxiolytic. As a pharmaceutical drug, it is used for smoking cessation to relieve withdrawal symptoms. Nicotine acts as a receptor agonist at most nicotinic acetylcholine receptors (nAChRs), except at two nicotinic receptor subunits (nAChRα9 and nAChRα10) where it acts as a receptor antagonist. Nicotine constitutes approximately 0.6–3.0% of the dry weight of tobacco. Nicotine is also present at ppb-concentrations in edible plants in the family Solanaceae, including potatoes, tomatoes, and eggplants, though sources disagree on whether this has any biological significance to human consumers. It functions as an antiherbivore toxin; consequently, nicotine was widely used as an insecticide in the past, and neonicotinoids (structurally similar to nicotine), such as imidacloprid, are s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nornicotine
Nornicotine is an alkaloid found in various plants including ''Nicotiana'', the tobacco plant. It is chemically similar to nicotine, but does not contain a methyl group. It is a precursor to the carcinogen ''N''-nitrosonornicotine that is produced during the curing and processing of tobacco. Nornicotine can react in human saliva to form N-nitrosonornicotine, a known type 1 carcinogen. Synthesis There are several routes for the synthesis of nornicotine. One route is the demethylation of nicotine, which can be accomplished by reaction with silver oxide. \mathrm Another route is the partial reduction of 3-myosmine, which can be accomplished by standard catalytic hydrogenation conditions using palladium as a catalyst or with sodium borohydride.. This reaction gives the racemic In chemistry, a racemic mixture, or racemate (), is one that has equal amounts of left- and right-handed enantiomers of a chiral molecule or salt. Racemic mixtures are rare in nature, but many compound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicotiana
''Nicotiana'' () is a genus of herbaceous plants and shrubs in the Family (biology), family Solanaceae, that is Native plant, indigenous to the Americas, Australia, Southwestern Africa and the South Pacific. Various ''Nicotiana'' species, commonly referred to as tobacco plants, are cultivated as ornamental garden plants. ''Nicotiana tabacum, N. tabacum'' is grown worldwide for the cultivation of tobacco leaves used for manufacturing and producing List of tobacco products, tobacco products, including cigars, cigarillos, cigarettes, chewing tobacco, dipping tobacco, Snuff (tobacco), snuff, and snus. Taxonomy Species The 79 accepted species include: * ''Nicotiana acuminata'' (Graham) William Jackson Hooker, Hook. – manyflower tobaccoKnapp et al. (2004) Nomenclatural changes and a new sectional classification in Nicotiana (Solanaceae) Taxon. 53(1):73-82. * ''Nicotiana africana'' Merxm. * ''Nicotiana alata'' Johann Heinrich Friedrich Link, Link & Christoph Friedrich Otto, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Plants
Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two different genetic parent strains * Hybrid (particle physics), a valence quark-antiquark pair and one or more gluons * Hybrid solar eclipse, a rare solar eclipse type Technology Transportation * Hybrid vehicle, a vehicle using more than one power source or an engine sourced from a different chassis ** Hybrid electric vehicle, a vehicle using both internal combustion and electric power sources *** Plug-in hybrid, whose battery can be recharged by a charging cable * Hybrid bicycle, a bicycle with features of road and mountain bikes * Hybrid train, a locomotive, railcar, or train that uses an onboard rechargeable energy storage system * Hybrid motorcycle, a motorcycle built using components from more than one original-manufacturer products, such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1904
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the ability t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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