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Leek (vegetable)
The leek is a vegetable, a cultivar of ''Allium ampeloprasum'', the broadleaf wild leek (syn. ''Allium porrum''). The edible part of the plant is a bundle of leaf sheaths that is sometimes erroneously called a stem or stalk. The genus ''Allium'' also contains the onion, garlic, shallot, scallion, chive, and Chinese onion. Three closely related vegetables, elephant garlic, kurrat and Persian leek or ''tareh'', are also cultivars of ''A. ampeloprasum'', although different in their uses as food. Etymology Historically, many scientific names were used for leeks, but they are now all treated as cultivars of ''A. ampeloprasum''. The name ''leek'' developed from the Old English word , from which the modern English name for garlic also derives. means 'onion' in Old English and is a cognate with languages based on Old Norse; Danish ', Icelandic ', Norwegian ' and Swedish '. German uses ' for leek, but in Dutch, ' is used for the whole onion genus, Allium. Form Rathe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allium
''Allium'' is a genus of monocotyledonous flowering plants that includes hundreds of species, including the cultivated onion, garlic, scallion, shallot, leek, and chives. The generic name ''Allium'' is the Latin word for garlic,Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). pp 43 and the type species for the genus is ''Allium sativum'' which means "cultivated garlic".''Allium'' In: Index Nominum Genericorum. In: Regnum Vegetabile (see ''External links'' below). Carl Linnaeus first described the genus ''Allium'' in 1753. Some sources refer to Greek ἀλέω (aleo, to avoid) by reason of the smell of garlic. Various ''Allium'' have been cultivated from the earliest times, and about a dozen species are economically important as crops, or garden vegetables, and an increasing number of species are important as ornamental plants. The decision to include a species in the genus ''Allium'' is taxonomically difficult, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old English
Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlers in the mid-5th century, and the first Old English literary works date from the mid-7th century. After the Norman conquest of 1066, English was replaced, for a time, by Anglo-Norman (a relative of French) as the language of the upper classes. This is regarded as marking the end of the Old English era, since during this period the English language was heavily influenced by Anglo-Norman, developing into a phase known now as Middle English in England and Early Scots in Scotland. Old English developed from a set of Anglo-Frisian or Ingvaeonic dialects originally spoken by Germanic tribes traditionally known as the Angles, Saxons and Jutes. As the Germanic settlers became dominant in England, their language replaced the languages of Roman Britain: Com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vinaigrette
Vinaigrette ( , ) is made by mixing an oil with a mild acid such as vinegar or lemon juice (citric acid). The mixture can be enhanced with salt, herbs and/or spices. It is used most commonly as a salad dressing, but can also be used as a marinade. Traditionally, a vinaigrette consists of 3 parts oil and 1 part vinegar mixed into a stable emulsion, but the term is also applied to mixtures with different proportions and to unstable emulsions which last only a short time before separating into layered oil and vinegar phases. Name is the diminutive form of the French word ("vinegar"). It was commonly known as " French dressing" in the 19th century. Preparation In general, vinaigrette consists of 3 parts of oil to 1 part of vinegar whisked into an emulsion. Salt and pepper are often added. Herbs and shallots, too, are often added, especially when it is used for cooked vegetables or grains. Sometimes mustard is used as an emulsifier and to add flavour. Varieties Vinaig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bouquet Garni
The ''bouquet garni'' (French for "garnished bouquet"; ) is a bundle of herbs usually tied with string and mainly used to prepare soup, stock, casseroles and various stews. The bouquet is cooked with the other ingredients and removed prior to consumption. Liquid remaining in the bouquet garni can be wrung out into the dish. There is no standard recipe for ''bouquet garni'', but most French recipes include thyme, bay leaf and parsley. It may also include basil, burnet, chervil, rosemary, peppercorns, savory and tarragon. Vegetables such as carrot, celery (leaves or leaf stalks), celeriac, leek, onion and parsley root are sometimes included in the ''bouquet''. In Provence, dried orange peel may be added. Sometimes, the ''bouquet'' is not bound with string, and its ingredients are filled into a small sachet, a piece of celery stalk, a net, or a tea strainer instead. Traditionally, the aromatics are bound within leek leaves, though a cheesecloth, muslin or coffee filter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinia Allii
''Puccinia porri'' (previously known as ''Puccinia allii'') is a species of rust fungus that causes leek rust. It affects leek, garlic, onion, and chives, and usually appears as bright orange spots on infected plants. Fungus ''Puccinia porri'' is autoecious, meaning that all stages of its life cycle occur on the host plant. While ''P. porri'' and ''P. mixta'' were originally thought to be separate species, by 1984 they were all generally categorized under ''P. allii''. The fungus causes leek rust, but it also affects garlic, onion, and chives. In 2016, Alistair McTaggart and colleagues used molecular phylogenetic analysis to sort out collections of fungi labeled as ''Puccinia allii'' occurring in Australia, and placed this name in synonymy with ''Puccinia porri''. Conditions for growth Leek rust appears seasonally, starting in the middle of August. It develops more quickly in warmer weather, so conversely, cold spells can reduce the onset of symptoms. If a leek reaches ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leek Moth
The leek moth or onion leaf miner (''Acrolepiopsis assectella'') is a species of moth of family Acrolepiidae (formerly Glyphipterigidae) and the genus ''Acrolepiopsis''. The species is native to Europe and Siberia, but is also found in North America, where it is an invasive species. While it was initially recorded in Hawaii, this was actually a misidentification of ''Acrolepiopsis sapporensis''. The leek moth is similar in appearance to other members of the genus ''Acrolepiopsis'', with mottled brown and white wings. Its wing span is approximately 12 mm across. It is a pest of leek crops, as the larvae feed on several species of ''Allium'' by mining into the leaves or bulbs. The shape of the leaf mine is variable, ranging from a corridor to a blotch, and can be with or without frass. This leaf mining can occur in the tubular leaves or in the stem. In the case of onions and shallots, the larvae mine into the bulb. In North America, where the moth is an invasive species and h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrips Tabaci
''Thrips tabaci'' is a species of very small insect in the genus ''Thrips'' in the order Thysanoptera. It is commonly known as the onion thrips, the potato thrips, the tobacco thrips or the cotton seedling thrips. It is an agricultural pest that can damage crops of onions and other plants, and it can additionally act as a vector for plant viruses. Description In some populations, nearly all onion thrips are female, and males are very rare. The adult onion thrips is some long. The body is some shade of yellow, yellowish-brown or brown; the antennae have seven segments, the wings are well-developed and females have an ovipositor at the tip of the abdomen. Distribution and host range The onion thrips is thought to have originated in the Mediterranean region but is now found on all continents except Antarctica. It infests a wide range of host plants that include onion, leek and garlic, brassicaceous plants such as cabbage, cauliflower and broccoli, asparagus, sugarbeet, melon, pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thrips
Thrips (order Thysanoptera) are minute (mostly long or less), slender insects with fringed wings and unique asymmetrical mouthparts. Different thrips species feed mostly on plants by puncturing and sucking up the contents, although a few are predators. Entomologists have described approximately 6,000 species. They fly only weakly and their feathery wings are unsuitable for conventional flight; instead, thrips exploit an unusual mechanism, clap and fling, to create lift using an unsteady circulation pattern with transient vortices near the wings. Many thrips species are pests of commercially important crops. A few species serve as vectors for over 20 viruses that cause plant disease, especially the Tospoviruses. Some species of thrips are beneficial as pollinators or as predators of other insects or mites. In the right conditions, such as in greenhouses, many species can exponentially increase in population size and form large swarms because of a lack of natural predator ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hilling
Hilling, earthing up or ridging is the technique in agriculture and horticulture of piling soil up around the base of a plant. It can be done by hand (usually using a hoe), or with powered machinery, typically a tractor attachment. Hilling buries the normally above-ground part of the plant, promoting desired growth. This may encourage the development of additional tubers (as with potatoes), force the plant to grow longer stems ( leeks), or for some crops (chicory, leeks, asparagus etc.) this blanching technique keeps the stems or shoots pale and tender, or influences their taste. Hilling may also be used to stabilize the stems of crops which are easily disturbed by wind. Examples A common application of hilling is for potatoes. The tubers grow just below the surface, and can produce chlorophyll and solanine if exposed to light (green potatoes). Solanine is toxic in large doses, and can result in nausea, headache, and in rare cases, death. By hilling one or more times during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivar Group
A Group (previously cultivar-groupInternational Code of Nomenclature for Cultivated Plants, 4th edition (1969), 5th edition (1980) and 6th edition (1995)) is a formal category in the '' International Code of Nomenclature for Cultivated Plants'' (''ICNCP'') used for cultivated plants (cultivars) that share a defined characteristic. It is represented in a botanical name by the symbol Group or Gp. "Group" or "Gp" is always written with a capital ''G'' in a botanical name, or ''epithet''. The Group is not italicized in a plant's name. The ''ICNCP'' introduced the term and symbol "Group" in 2004, as a replacement for the lengthy and hyphenated "cultivar-group", which had previously been the category's name since 1969. For the old name "cultivar-group", the non-standard abbreviation cv. group or cv. Group is also sometimes encountered. There is a slight difference in meaning, since a cultivar-group was defined to comprise cultivars, whereas a Group may include individual plants. The IC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greenhouse
A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.These structures range in size from small sheds to industrial-sized buildings. A miniature greenhouse is known as a cold frame. The interior of a greenhouse exposed to sunlight becomes significantly warmer than the external temperature, protecting its contents in cold weather. Many commercial glass greenhouses or hothouses are high tech production facilities for vegetables, flowers or fruits. The glass greenhouses are filled with equipment including screening installations, heating, cooling, and lighting, and may be controlled by a computer to optimize conditions for plant growth. Different techniques are then used to manage growing conditions, including air temperature, relative humidity and vapour-pressure deficit, in order to provide the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
