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Citrus Blight
Citrus blight is a type of blight that occurs in tropical and semi-tropical regions. Specializing in infecting citrus trees, the blight is found in North America, the Caribbean, South America, South Africa and Australia. The blight injures plants by forming blockages in xylem and phloem, inhibiting resource distribution and resulting in plant die-back and smaller fruit yields. As of 2020 there is no cure for the blight, and neither the causal agent nor spreading mechanism is known. Description Citrus blight is a type of plant blight. The effects of citrus blight were first documented in the early 20th century. The disease afflicts plants in tropical and subtropical environments; regions impacted by the disease include North America and South America, the Caribbean, South Africa, and Australia. The important citrus-growing regions of California and the Mediterranean have not been effected. The blight spreads through an infected tree, invading and colonizing the plant's roots, le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endogenous Pararetrovirus
Endogenous substances and processes are those that originate from within a living system such as an organism, Tissue (biology), tissue, or Cell (biology), cell. In contrast, Exogeny, exogenous substances and processes are those that originate from outside of an organism. For example, estradiol is an endogenous estrogen hormone produced within the body, whereas ethinylestradiol is an exogenous synthetic estrogen, commonly used in birth control pills. References External links *{{Wiktionary-inline, endogeny Biology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrus × Sinensis
''Citrus'' × ''sinensis'' (sometimes written ''Citrus sinensis''), a hybrid between pomelo (''Citrus maxima'') and mandarin (''Citrus reticulata''), also known as the sweet oranges, is a commonly cultivated family of oranges that includes blood oranges and navel oranges. Uses The orange fruit is an important agricultural product, used for both the juicy fruit pulp and the aromatic peel (rind). Orange blossoms (the flowers) are used in several different ways, as are the leaves and wood of the tree. Flowers * The orange blossom, which is the state flower of Florida, is highly fragrant and traditionally associated with good fortune. It has long been popular in bridal bouquets and head wreaths. * Orange blossom essence is an important component in the making of perfume. * Orange blossom petals can also be made into a delicately citrus-scented counterpart to rosewater, known as "orange blossom water" or "orange flower water". It is a common ingredient in French and Middle Eastern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrus Greening Disease
Citrus greening disease (; or HLB) is a disease of citrus caused by a vector-transmitted pathogen. The causative agents are motile bacteria, ''Liberibacter'' spp. The disease is vectored and transmitted by the Asian citrus psyllid, ''Diaphorina citri'', and the African citrus psyllid, '' Trioza erytreae'', also known as the two-spotted citrus psyllid. It has also been shown to be graft-transmissible. Three different types of HLB are currently known: the heat-tolerant Asian form, and the heat-sensitive African and American forms. The disease was first described in 1929 and first reported in China in 1943. The African variation was first reported in 1947 in South Africa, where it is still widespread. Eventually, it affected the United States, reaching Florida in 2005. Within three years, it had spread to the majority of citrus farms. The rapid increase in this disease has threatened the citrus industry not only in Florida, but the entire US. As of 2009, 33 countries have reported HL ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Florida
The University of Florida (Florida or UF) is a public land-grant research university in Gainesville, Florida. It is a senior member of the State University System of Florida, traces its origins to 1853, and has operated continuously on its Gainesville campus since September 1906. After the Florida state legislature's creation of performance standards in 2013, the Florida Board of Governors designated the University of Florida as a "preeminent university". For 2022, '' U.S. News & World Report'' ranked Florida as the fifth (tied) best public university and 28th (tied) best university in the United States. The University of Florida is the only member of the Association of American Universities in Florida and is classified among "R1: Doctoral Universities – Very high research activity". The university is accredited by the Southern Association of Colleges and Schools (SACS). It is the third largest Florida university by student population,Nathan Crabbe, UF is no longer la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcium Nitrate
Calcium nitrate, also called ''Norgessalpeter'' (Norwegian salpeter), is an inorganic compound with the formula Ca(NO3)2(H2O)x. The anhydrous compound, which is rarely encountered, absorbs moisture from the air to give the tetrahydrate. Both anhydrous and hydrated forms are colourless salts. Calcium nitrate is mainly used as a component in fertilizers, but it has other applications. Nitrocalcite is the name for a mineral which is a hydrated calcium nitrate that forms as an efflorescence where manure contacts concrete or limestone in a dry environment as in stables or caverns. A variety of related salts are known including calcium ammonium nitrate decahydrate and calcium potassium nitrate decahydrate. Production and reactivity Norgessalpeter was synthesized at Notodden, Norway in 1905 by the Birkeland–Eyde process. Most of the world's calcium nitrate is now made in Porsgrunn. It is produced by treating limestone with nitric acid, followed by neutralization with ammonia: :CaCO3 + ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symptoms Of Citrus Blight Disease
Signs and symptoms are the observed or detectable signs, and experienced symptoms of an illness, injury, or condition. A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showing on a medical scan. A symptom is something out of the ordinary that is experienced by an individual such as feeling feverish, a headache or other pain or pains in the body. Signs and symptoms Signs A medical sign is an objective observable indication of a disease, injury, or abnormal physiological state that may be detected during a physical examination, examining the patient history, or diagnostic procedure. These signs are visible or otherwise detectable such as a rash or bruise. Medical signs, along with symptoms, assist in formulating diagnostic hypothesis. Examples of signs include elevated blood pressure, nail clubbing of the fingernails or toenails, staggering gait, and arcus senilis and arcus juvenilis of the eyes. Indicati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trifoliate Orange
The trifoliate orange, ''Citrus trifoliata'' or ''Poncirus trifoliata'', is a member of the family Rutaceae. Whether the trifoliate oranges should be considered to belong to their own genus, ''Poncirus'', or be included in the genus ''Citrus'' is debated. The species is unusual among citrus for having deciduous, compound leaves and pubescent (downy) fruit. It is native to northern China and Korea, and is also known as the Japanese bitter-orange, hardy orange or Chinese bitter orange. The plant is a fairly cold-hardy citrus (USDA zone 6) and will tolerate moderate frost and snow, making a large shrub or small tree tall. Because of its relative hardiness, citrus grafted onto ''Citrus trifoliata'' are usually hardier than when grown on their own roots. Description The trifoliate orange is recognizable by the large thorns on the shoots, and its deciduous leaves with three (or rarely, five) leaflets, typically with the middle leaflet long, and the two side leaflets long. The flow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rough Lemon
Rough lemon (''Citrus'' × ''jambhiri'' Lush.) is the fruit and the tree of a citrus hybrid. Like the rangpur, it is a cross between mandarin orange and citron. Rough lemon is a cold-hardy citrus and can grow into a large tree. The rough lemon is ninety per-cent rind, making it borderline inedible. As a result, the rough lemon is mainly used for citrus rootstock. There are several cultivars of rough lemon that can serve as a citrus rootstock, including 'Florida', 'Schaub', and 'Vangassay' rough lemon. at website. The process for using the rough lemon as a citrus rootstock would start with mashing up the rough lemons. The mashed up rough lemons w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangpur (fruit)
Rangpur, ''Citrus'' × ''limonia'' or ''Citrus reticulata'' × ''medica'', sometimes called the rangpur lime, mandarin lime or lemandarin, is a hybrid between the mandarin orange and the citron. It is a citrus fruit with a very acidic taste and an orange peel and flesh. Common names Common names for this fruit include rangpur, the name of a city now in Bangladesh. Rangpur is also known in the Indian subcontinent as ''Sylhet lime'' (after another region also now in Bangladesh), ''surkh nimboo'', and ''sharbati''. It is known as a ''canton-lemon'' in South China, a ''hime-lemon'' in Japan, as ''limão-capeta'', ''limão-cravo'', ''limão-rosa'' or ''limão-galego'' in Brazil and Portugal (namely in the Azores), and ''mandarin-lime'' in the United States, and similarly ''limón-mandarina'' (lemon tangerine) in Costa Rica because of its shape and the way its skin is peeled. History ''Citrus'' × ''limonia'' was introduced into Florida in the late nineteenth century by Reasoner Brothe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carrizo Citrange
The citrange (a portmanteau of ''citrus'' and ''orange'') is a citrus hybrid of the sweet orange and the trifoliate orange. The purpose of this cross was to attempt to create a cold hardy citrus tree (which is the nature of a trifoliate), with delicious fruit like those of the sweet orange. However, citranges are generally bitter. Citrange is used as a rootstock for citrus in Morocco, but does not prevent dry root rot or exocortis disease. Cultivars There are several named citrange cultivars, including the 'Carrizo' citrange and the 'Troyer' citrange. Both resulted from a hybrid between the trifoliate orange and the Washington navel orange. There is also a cultivar called 'Rusk' which resulted from a cross between a Ruby orange and a trifoliate orange. See also *Citrangequat *List of citrus diseases *University of California, Riverside Citrus Variety Collection The UCR Citrus Variety Collection (CVC) is one of the most important collections of citrus diversity in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrumelo
Citrumelo (× ''Citroncirus'' spp.) is also called ''Swingle citrumelo trifoliate hybrid'', because it is cold hardy and is a hybrid between a 'Duncan' grapefruit and a trifoliate orange (''Poncirus trifoliata'' ( L.) Raf.), developed by Walter Tennyson Swingle. Citrumelo is widely employed as a citrus rootstock, being resistant to the severe citrus tristeza virus and to phytophthora root rot as well as to blight, cold, and citrus nematode. It produces yellow fruit which taste (if added sugar) and smell like an ordinary grapefruit. The trees are very hardy and can survive temperatures into the teens (Fahrenheit). Taxonomy Trifoliate orange, according to Swingle, belongs to a citrus related genera, called ''Poncirus'', while grapefruit equivocally belongs to the genus citrus, hence the botanical name A botanical name is a formal scientific name conforming to the '' International Code of Nomenclature for algae, fungi, and plants'' (ICN) and, if it concerns a plant cultige ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitter Orange
Bitter orange, Seville orange, bigarade orange, or marmalade orange is the citrus tree ''Citrus'' × ''aurantium'' and its fruit. It is native to Southeast Asia and has been spread by humans to many parts of the world. It is probably a cross between the pomelo, ''Citrus maxima'', and the mandarin orange, ''Citrus reticulata''. History Wild trees are found near small streams in generally secluded and wooded parts of Florida and the Bahamas after it was introduced to the area from Spain, where it had been introduced and cultivated heavily beginning in the 10th century by the Moors. Identification Citrus × aurantium can be identified through its orange fruit with a distinctly bitter or sour taste. The tree has alternate simple leaves and thorns on its petiole. Usage Many varieties of bitter orange are used for their essential oil, and are found in perfume, used as a flavoring or as a solvent, and also for consumption. The Seville orange variety is used in the production of marma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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