89-466: Orange peel is the peel of an orange. Orange Peel or Orange peel may also refer to: Orange peel The orange , also called sweet orange to distinguish it from the bitter orange ( Citrus × aurantium ), is the fruit of a tree in the family Rutaceae . Botanically, this is the hybrid Citrus × sinensis , between the pomelo ( Citrus maxima ) and the mandarin orange ( Citrus reticulata ). The chloroplast genome , and therefore
178-424: A "true" cultivar name – the recognized scientific name in the public domain – and a "commercial synonym" – an additional marketing name that is legally protected. An example would be Rosa Fascination = 'Poulmax', in which Rosa is the genus, Fascination is the trade designation, and 'Poulmax' is scientific cultivar name. Because a name that is attractive in one language may have less appeal in another country,
267-521: A characteristic second fruit at the apex , which protrudes slightly like a human navel . They are mainly an eating fruit, as their thicker skin makes them easy to peel, they are less juicy and their bitterness makes them less suitable for juice. The parent variety was probably the Portuguese navel orange or Umbigo . The cultivar rapidly spread to other countries, but being seedless it had to be propagated by cutting and grafting . The Cara cara orange
356-424: A component of a cultigen can be accepted as a cultivar if it is recognisable and has stable characters. Therefore, all cultivars are cultigens, because they are cultivated, but not all cultigens are cultivars, because some cultigens have not been formally distinguished and named as cultivars. The Cultivated Plant Code notes that the word cultivar is used in two different senses: first, as a "classification category"
445-436: A constant state of development which makes the naming of such an assemblage as a cultivar a futile exercise." However, retired transgenic varieties such as the fish tomato , which are no longer being developed, do not run into this obstacle and can be given a cultivar name. Cultivars may be selected because of a change in the ploidy level of a plant which may produce more desirable characteristics. Every unique cultivar has
534-796: A cultivar. Some cultivars "come true from seed", retaining their distinguishing characteristics when grown from seed. Such plants are termed a "variety", "selection", or "strain" but these are ambiguous and confusing words that are best avoided. In general, asexually propagated cultivars grown from seeds produce highly variable seedling plants, and should not be labelled with, or sold under, the parent cultivar's name. Seed-raised cultivars may be produced by uncontrolled pollination when characteristics that are distinct, uniform and stable are passed from parents to progeny. Some are produced as "lines" that are produced by repeated self-fertilization or inbreeding or "multilines" that are made up of several closely related lines. Sometimes they are F1 hybrids which are
623-783: A database of new cultivars protected by PBR in all countries. An International Cultivar Registration Authority (ICRA) is a voluntary, non-statutory organization appointed by the Commission for Nomenclature and Cultivar Registration of the International Society of Horticultural Science. ICRAs are generally formed by societies and institutions specializing in particular plant genera such as Dahlia or Rhododendron and are currently located in Europe, North America, China, India, Singapore, Australia, New Zealand, South Africa and Puerto Rico. Each ICRA produces an annual report and its reappointment
712-468: A decade the pest was controlled. This was one of the first successful applications of biological pest control on any crop. The orange dog caterpillar of the giant swallowtail butterfly, Papilio cresphontes , is a pest of citrus plantations in North America, where it eats new foliage and can defoliate young trees. Citrus greening disease , caused by the bacterium Liberobacter asiaticum , has been
801-610: A group of sweet orange x trifoliate orange ( Citrus trifoliata ) hybrids. In Europe, the Moors introduced citrus fruits including the bitter orange, lemon, and lime to Al-Andalus in the Iberian Peninsula during the Arab Agricultural Revolution . Large-scale cultivation started in the 10th century, as evidenced by complex irrigation techniques specifically adapted to support orange orchards. Citrus fruits—among them
890-476: A luxury food grown by wealthy people in private conservatories, called orangeries . By 1646, the sweet orange was well known throughout Europe; it went on to become the most often cultivated of all fruit trees. Louis XIV of France had a great love of orange trees and built the grandest of all royal Orangeries at the Palace of Versailles . At Versailles, potted orange trees in solid silver tubs were placed throughout
979-563: A modern vernacular language to distinguish them from botanical epithets. For example, the full cultivar name of the King Edward potato is Solanum tuberosum 'King Edward'. 'King Edward' is the cultivar epithet, which, according to the Rules of the Cultivated Plant Code , is bounded by single quotation marks. For patented or trademarked plant product lines developed from a given cultivar,
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#17328633628341068-517: A much larger scale, industrially. Orange juice is a traded commodity on the Intercontinental Exchange . Frozen orange juice concentrate is made from freshly squeezed and filtered juice. Oranges are made into jam in many countries; in Britain, bitter Seville oranges are used to make marmalade . Almost the whole Spanish production is exported to Britain for this purpose. The entire fruit
1157-413: A name, the first letter of the word "Group" is itself capitalized. Since the 1990s there has been an increasing use of legal protection for newly produced cultivars. Plant breeders expect legal protection for the cultivars they produce. According to proponents of such protections, if other growers can immediately propagate and sell these cultivars as soon as they come on the market, the breeder's benefit
1246-491: A particular disease. Genetically modified plants with characteristics resulting from the deliberate implantation of genetic material from a different germplasm may form a cultivar. However, the International Code of Nomenclature for Cultivated Plants notes, "In practice such an assemblage is often marketed from one or more lines or multilines that have been genetically modified. These lines or multilines often remain in
1335-595: A particular part of the plant, such as a lateral branch, or from a particular phase of the life cycle, such as a juvenile leaf, or from aberrant growth as occurs with witch's broom . Plants whose distinctive characters are derived from the presence of an intracellular organism may also form a cultivar provided the characters are reproduced reliably from generation to generation. Plants of the same chimera (which have mutant tissues close to normal tissue) or graft-chimeras (which have vegetative tissue from different kinds of plants and which originate by grafting) may also constitute
1424-523: A plant may be given different selling names from country to country. Quoting the original cultivar name allows the correct identification of cultivars around the world. The main body coordinating plant breeders' rights is the International Union for the Protection of New Varieties of Plants ( Union internationale pour la protection des obtentions végétales , UPOV) and this organization maintains
1513-419: A range of different sizes, and shapes varying from spherical to oblong. Inside and attached to the rind is a porous white tissue, the white, bitter mesocarp or albedo ( pith ). The orange contains a number of distinct carpels (segments or pigs, botanically the fruits) inside, typically about ten, each delimited by a membrane and containing many juice-filled vesicles and usually a few pips . When unripe,
1602-484: A rootstock is grown from seed. Then, when it is approximately one year old, the leafy top is cut off and a bud taken from a specific scion variety, is grafted into its bark. The scion is what determines the variety of orange, while the rootstock makes the tree resistant to pests and diseases and adaptable to specific soil and climatic conditions. Thus, rootstocks influence the rate of growth and have an effect on fruit yield and quality. Rootstocks must be compatible with
1691-527: A series of six-to-seven-foot-long tines to shake the tree canopy at a relatively constant stroke and frequency. Oranges are picked once they are pale orange. Oranges must be mature when harvested. In the United States, laws forbid harvesting immature fruit for human consumption in Texas, Arizona, California and Florida. Ripe oranges, however, often have some green or yellow-green color in the skin. Ethylene gas
1780-669: A shelf life of about one month, and are best stored loose. The first major pest that attacked orange trees in the United States was the cottony cushion scale ( Icerya purchasi ), imported from Australia to California in 1868. Within 20 years, it wiped out the citrus orchards around Los Angeles, and limited orange growth throughout California. In 1888, the USDA sent Alfred Koebele to Australia to study this scale insect in its native habitat. He brought back with him specimens of an Australian ladybird , Novius cardinalis (the Vedalia beetle), and within
1869-451: A short time, but also suppress beneficial predatory ladybird beetles. Soil application of aldicarb provided limited control of Asian citrus psyllid, while drenches of imidacloprid to young trees were effective for two months or more. Management of citrus greening disease requires an integrated approach that includes use of clean stock, elimination of inoculum via voluntary and regulatory means, use of pesticides to control psyllid vectors in
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#17328633628341958-694: A small detail one of the first representations of oranges in Western art, the costly fruit perhaps traded by the merchant Arnolfini himself. By the 17th century, orangeries were added to great houses in Europe, both to enable the fruit to be grown locally and for prestige, as seen in the Versailles Orangerie completed in 1686. The Dutch Post-Impressionist artist Vincent van Gogh portrayed oranges in paintings such as his 1889 Still Life of Oranges and Lemons with Blue Gloves and his 1890 A Child with Orange , both works late in his life. The American artist of
2047-462: A unique name within its denomination class (which is almost always the genus). Names of cultivars are regulated by the International Code of Nomenclature for Cultivated Plants , and may be registered with an International Cultivar Registration Authority (ICRA). There are sometimes separate registration authorities for different plant types such as roses and camellias. In addition, cultivars may be associated with commercial marketing names referred to in
2136-690: A vernacular language. From circa the 1900s, cultivated plants in Europe were recognised in the Scandinavian, Germanic, and Slavic literature as stamm or sorte , but these words could not be used internationally because, by international agreement, any new denominations had to be in Latin. In the twentieth century an improved international nomenclature was proposed for cultivated plants. Liberty Hyde Bailey of Cornell University in New York , United States created
2225-409: Is capitalized (with some permitted exceptions such as conjunctions). It is permissible to place a cultivar epithet after a common name provided the common name is botanically unambiguous. Cultivar epithets published before 1 January 1959 were often given a Latin form and can be readily confused with the specific epithets in botanical names; after that date, newly coined cultivar epithets must be in
2314-700: Is 87% water, 12% carbohydrates , 1% protein , and contains negligible fat (see table). As a 100-gram reference amount, orange flesh provides 47 calories , and is a rich source of vitamin C , providing 64% of the Daily Value . No other micronutrients are present in significant amounts (see table). Oranges contain diverse phytochemicals , including carotenoids ( beta-carotene , lutein and beta-cryptoxanthin ), flavonoids (e.g. naringenin ) and numerous volatile organic compounds producing orange aroma , including aldehydes , esters , terpenes , alcohols , and ketones . Orange juice contains only about one-fifth
2403-519: Is a hesperidium , a modified berry ; it is covered by a rind formed by a rugged thickening of the ovary wall . Citrus trees are angiosperms , and most species are almost entirely interfertile . This includes grapefruits , lemons , limes , oranges, and many citrus hybrids . As the interfertility of oranges and other citrus has produced numerous hybrids and cultivars , and bud mutations have also been selected, citrus taxonomy has proven difficult. The sweet orange, Citrus x sinensis ,
2492-453: Is a higher sugar/acid ratio with less bitterness. As a citrus fruit, the orange is acidic, with pH levels ranging from 2.9 to 4.0. Taste and aroma vary according to genetic background, environmental conditions during development, ripeness at harvest, postharvest conditions, and storage duration. Common oranges (also called "white", "round", or "blond" oranges) constitute about two-thirds of all orange production. The majority of this crop
2581-672: Is a type of navel orange grown mainly in Venezuela , South Africa and California's San Joaquin Valley . It is sweet and low in acid, with distinctively pinkish red flesh. It was discovered at the Hacienda Cara Cara in Valencia , Venezuela, in 1976. Blood oranges, with an intense red coloration inside, are widely grown around the Mediterranean; there are several cultivars. The development of
2670-619: Is an efficient cleaning agent with a pleasant smell, promoted for being environmentally friendly and therefore preferable to petrochemicals. It is, however, irritating to the skin and toxic to aquatic life. Oranges have featured in human culture since ancient times. The earliest mention of the sweet orange in Chinese literature dates from 314 BC. Larissa Pham, in The Paris Review , notes that sweet oranges were available in China much earlier than in
2759-529: Is any plant that is deliberately selected for or altered in cultivation, as opposed to an indigen ; the Cultivated Plant Code states that cultigens are "maintained as recognisable entities solely by continued propagation". Cultigens can have names at any of many taxonomic ranks, including those of grex , species , cultivar group , variety , form , and cultivar; and they may be plants that have been altered in cultivation, including by genetic modification , but have not been formally denominated. A cultigen or
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2848-444: Is considered every four years. The main task is to maintain a register of the names within the group of interest and where possible this is published and placed in the public domain. One major aim is to prevent the duplication of cultivar and Group epithets within a genus, as well as ensuring that names are in accord with the latest edition of the Cultivated Plant Code . In this way, over the last 50 years or so, ICRAs have contributed to
2937-410: Is cut up and boiled with sugar; the pith contributes pectin , which helps the marmalade to set. The first recipe was by an Englishwoman, Mary Kettilby , in 1714. Pieces of peel were first added by Janet Keiller of Dundee in the 1790s, contributing a distinctively bitter taste. Orange peel contains the bitter substances limonene and naringin . Zest is scraped from the coloured outer part of
3026-404: Is largely lost. Legal protection for cultivars is obtained through the use of Plant breeders' rights and plant Patents but the specific legislation and procedures needed to take advantage of this protection vary from country to country. The use of legal protection for cultivars can be controversial, particularly for food crops that are staples in developing countries, or for plants selected from
3115-464: Is not a wild fruit, but arose in domestication in East Asia. It originated in a region encompassing Southern China , Northeast India , and Myanmar . The fruit was created as a cross between a non-pure mandarin orange and a hybrid pomelo that had a substantial mandarin component. Since its chloroplast DNA is that of pomelo, it was likely the hybrid pomelo, perhaps a pomelo BC1 backcross , that
3204-439: Is often sold fresh and blended with juice from other regions, because Indian River trees yield sweet oranges but in relatively small quantities. Oranges, whose flavor may vary from sweet to sour , are commonly peeled and eaten fresh raw as a dessert. Orange juice is obtained by squeezing the fruit on a special tool (a juicer or squeezer ) and collecting the juice in a tray or tank underneath. This can be made at home or, on
3293-432: Is simply a matter of convenience as the category was created to serve the practical needs of horticulture , agriculture , and forestry . Members of a particular cultivar are not necessarily genetically identical. The Cultivated Plant Code emphasizes that different cultivated plants may be accepted as different cultivars, even if they have the same genome, while cultivated plants with different genomes may be regarded as
3382-424: Is the sense of cultivar that is most generally understood and which is used as a general definition. A cultivar is an assemblage of plants that (a) has been selected for a particular character or combination of characters, (b) is distinct, uniform and stable in those characters, and (c) when propagated by appropriate means, retains those characters. Which plants are chosen to be named as cultivars
3471-440: Is to replace the Latin scientific names on plant labels in retail outlets with appealing marketing names that are easy to use, pronounce, and remember. Marketing names lie outside the scope of the Cultivated Plant Code which refers to them as "trade designations". If a retailer or wholesaler has the sole legal rights to a marketing name then that may offer a sales advantage. Plants protected by plant breeders' rights (PBR) may have
3560-462: Is used for juice. The Valencia orange is a late-season fruit; it is popular when navel oranges are out of season. Thomas Rivers , an English nurseryman, imported this variety from the Azores and catalogued it in 1865 under the name Excelsior. Around 1870, he provided trees to S. B. Parsons, a Long Island nurseryman, who in turn sold them to E. H. Hart of Federal Point, Florida . Navel oranges have
3649-506: Is used to turn green skin to orange. This process is known as "degreening", "gassing", "sweating", or "curing". Oranges are non- climacteric fruits and cannot ripen internally in response to ethylene gas after harvesting, though they will de-green externally. Commercially, oranges can be stored by refrigeration in controlled-atmosphere chambers for up to twelve weeks after harvest. Storage life ultimately depends on cultivar, maturity, pre-harvest conditions, and handling. At home, oranges have
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3738-757: The Ashcan School , John Sloan , made a 1935 painting Blond Nude with Orange, Blue Couch , while Henri Matisse 's last painting was his 1951 Nude with Oranges ; after that he only made cut-outs. Cultivar A cultivar is a kind of cultivated plant that people have selected for desired traits and which retains those traits when propagated . Methods used to propagate cultivars include division, root and stem cuttings, offsets, grafting , tissue culture , or carefully controlled seed production. Most cultivars arise from deliberate human manipulation , but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of
3827-402: The Cultivated Plant Code as "trade designations" (see below). A cultivar name consists of a botanical name (of a genus, species , infraspecific taxon , interspecific hybrid or intergeneric hybrid) followed by a cultivar epithet . The cultivar epithet is enclosed by single quotes; it should not be italicized if the botanical name is italicized; and each of the words within the epithet
3916-417: The Cultivated Plant Code . Each ICRA also ensures that new names are formally established (i.e. published in hard copy, with a description in a dated publication). They record details about the plant, such as parentage, the names of those concerned with its development and introduction, and a basic description highlighting its distinctive characters. ICRAs are not responsible for assessing the distinctiveness of
4005-495: The International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word cultivar was coined as a term meaning " cultivated variety ". Popular ornamental plants like roses , camellias , daffodils , rhododendrons , and azaleas are commonly cultivars produced by breeding and selection or as sports , for floral colour or size, plant form, or other desirable characteristics. Similarly,
4094-591: The Latin names in Linnaeus ' (1707–1778) Species Plantarum (tenth edition) and Genera Plantarum (fifth edition). In Species Plantarum , Linnaeus enumerated all plants known to him, either directly or from his extensive reading. He recognised the rank of varietas (botanical "variety", a rank below that of species and subspecies ) and he indicated these varieties with letters of the Greek alphabet , such as α, β, and λ, before
4183-520: The citric acid of lime or lemon juice (which contain about 47 g/L). The taste of oranges is determined mainly by the ratio of sugars to acids, whereas orange aroma derives from volatile organic compounds , including alcohols , aldehydes , ketones , terpenes , and esters . Bitter limonoid compounds, such as limonin , decrease gradually during development, whereas volatile aroma compounds tend to peak in mid- to late-season development. Taste quality tends to improve later in harvests when there
4272-514: The cultigen , which is defined as a plant whose origin or selection is primarily due to intentional human activity. A cultivar is not the same as a botanical variety , which is a taxonomic rank below subspecies , and there are differences in the rules for creating and using the names of botanical varieties and cultivars. In recent times, the naming of cultivars has been complicated by the use of statutory patents for plants and recognition of plant breeders' rights . The International Union for
4361-415: The etymology and it has been suggested that the word is actually a blend of culti gen and var iety . The neologism cultivar was promoted as "euphonious" and "free from ambiguity". The first Cultivated Plant Code of 1953 subsequently commended its use, and by 1960 it had achieved common international acceptance. The words cultigen and cultivar may be confused with each other. A cultigen
4450-705: The orange tree can be eaten fresh or processed for its juice or fragrant peel . In 2022, 76 million tonnes of oranges were grown worldwide, with Brazil producing 22% of the total, followed by India and China . Oranges, variously understood, have featured in human culture since ancient times. They first appear in Western art in the Arnolfini Portrait by Jan van Eyck , but they had been depicted in Chinese art centuries earlier, as in Zhao Lingrang's Song dynasty fan painting Yellow Oranges and Green Tangerines . By
4539-584: The 17th century, an orangery had become an item of prestige in Europe, as seen at the Versailles Orangerie . More recently, artists such as Vincent van Gogh , John Sloan , and Henri Matisse included oranges in their paintings. The orange tree is a relatively small evergreen , flowering tree, with an average height of 9 to 10 m (30 to 33 ft), although some very old specimens can reach 15 m (49 ft). Its oval leaves , which are alternately arranged , are 4 to 10 cm (1.6 to 3.9 in) long and have crenulate margins. Sweet oranges grow in
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#17328633628344628-457: The 1995 edition, it is still widely used and recommended by other authorities. Where several very similar cultivars exist they can be associated into a Group (formerly Cultivar-group ). As Group names are used with cultivar names it is necessary to understand their way of presentation. Group names are presented in normal type and the first letter of each word capitalised as for cultivars, but they are not placed in single quotes. When used in
4717-561: The Near East (where they are especially popular), succari in Egypt, and lima in Brazil. The lack of acid, which protects orange juice against spoilage in other groups, renders them generally unfit for processing as juice, so they are primarily eaten. They remain profitable in areas of local consumption, but rapid spoilage renders them unsuitable for export to major population centres of Europe, Asia, or
4806-443: The Protection of New Varieties of Plants (UPOV – French : Union internationale pour la protection des obtentions végétales ) offers legal protection of plant cultivars to persons or organisations that introduce new cultivars to commerce. UPOV requires that a cultivar be "distinct", "uniform", and "stable". To be "distinct", it must have characters that easily distinguish it from any other known cultivar. To be "uniform" and "stable",
4895-402: The United States. Like most citrus plants, oranges do well under moderate temperatures—between 15.5 and 29 °C (59.9 and 84.2 °F)—and require considerable amounts of sunshine and water. They are principally grown in tropical and subtropical regions. As oranges are sensitive to frost , farmers have developed methods to protect the trees from frost damage. A common process is to spray
4984-454: The West. She writes that Zhao Lingrang's fan painting Yellow Oranges and Green Tangerines pays attention not to the fruit's colour but the shape of the fruit-laden trees, and that Su Shi's poem on the same subject runs "You must remember, / the best scenery of the year, / Is exactly now, / when oranges turn yellow and tangerines green." The scholar Cristina Mazzoni has examined the multiple uses of
5073-487: The air temperature very slightly. Smudge pots were developed after a disastrous freeze in southern California in January 1913 destroyed a whole crop. Commercially grown orange trees are propagated asexually by grafting a mature cultivar onto a suitable seedling rootstock to ensure the same yield , identical fruit characteristics, and resistance to diseases throughout the years. Propagation involves two stages: first,
5162-448: The bitter orange—were introduced to Sicily in the 9th century during the period of the Emirate of Sicily , but the sweet orange was unknown there until the late 15th century or the beginnings of the 16th century, when Italian and Portuguese merchants brought orange trees into the Mediterranean area. Shortly afterward, the sweet orange quickly was adopted as an edible fruit. It was considered
5251-473: The botanical variety except in respect to its origin. In that essay, Bailey used only the rank of species for the cultigen, but it was obvious to him that many domesticated plants were more like botanical varieties than species, and that realization appears to have motivated the suggestion of the new category of cultivar . Bailey created the word cultivar . It is generally assumed to be a blend of culti vated and var iety but Bailey never explicitly stated
5340-436: The citrus crop, and biological control of the vectors in non-crop reservoirs. Greasy spot, a fungal disease caused by the ascomycete Mycosphaerella citri , produces leaf spots and premature defoliation, thus reducing the tree's vigour and yield. Ascospores of M. citri are generated in pseudothecia in decomposing fallen leaves. In 2022, world production of oranges was 76 million tonnes , led by Brazil with 22% of
5429-421: The commercial product name is typically indicated by the symbols "TM" or "®", or is presented in capital letters with no quotation marks, following the cultivar name, as in the following example, where "Bloomerang" is the commercial name and 'Penda' is the cultivar epithet: Syringa 'Penda' BLOOMERANG. Although "cv." has not been permitted by the International Code of Nomenclature for Cultivated Plants since
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#17328633628345518-491: The cultivar is defined in Article 2 of the International Code of Nomenclature for Cultivated Plants (2009, 8th edition) as follows: The basic category of cultivated plants whose nomenclature is governed by this Code is the cultivar. There are two other classification categories for cultigens, the grex and the group . The Code then defines a cultivar as a "taxonomic unit within the classification category of cultivar". This
5607-472: The cultivar must retain these characters in repeated propagation. The naming of cultivars is an important aspect of cultivated plant taxonomy , and the correct naming of a cultivar is prescribed by the Rules and Recommendations of the International Code of Nomenclature for Cultivated Plants (ICNCP, commonly denominated the Cultivated Plant Code ). A cultivar is given a cultivar name, which consists of
5696-487: The fruit in Italian art and literature, from Catherine of Siena 's sending of candied oranges to Pope Urban , to Sandro Botticelli 's setting of his painting Primavera in an orange grove. She notes that oranges symbolised desire and wealth on the one hand, and deformity on the other, while in the fairy-stories of Sicily, they have magical properties. Pham comments that the Arnolfini Portrait by Jan van Eyck contains in
5785-487: The fruit is green. The grainy irregular rind of the ripe fruit can range from bright orange to yellow-orange, but frequently retains green patches or, under warm climate conditions, remains entirely green. Like all other citrus fruits, the sweet orange is non- climacteric , not ripening off the tree. The Citrus sinensis group is subdivided into four classes with distinct characteristics: common oranges, blood or pigmented oranges, navel oranges, and acidless oranges. The fruit
5874-683: The fruit on Hispaniola . Subsequent expeditions in the mid-1500s brought sweet oranges to South America and Mexico, and to Florida in 1565, when Pedro Menéndez de Avilés founded St Augustine . Spanish missionaries brought orange trees to Arizona between 1707 and 1710, while the Franciscans did the same in San Diego, California, in 1769. Archibald Menzies , the botanist on the Vancouver Expedition , collected orange seeds in South Africa, raised
5963-469: The initial n present in earlier forms of the word dropped off because it may have been mistaken as part of an indefinite article ending in an n sound. In French, for example, une norenge may have been heard as une orenge . This linguistic change is called juncture loss . The color was named after the fruit, with the first recorded use of orange as a color name in English in 1512. Orange flesh
6052-444: The maternal line, is that of pomelo. There are many related hybrids including of mandarins and sweet orange. The sweet orange has had its full genome sequenced . The orange originated in a region encompassing Southern China , Northeast India , and Myanmar ; the earliest mention of the sweet orange was in Chinese literature in 314 BC. Orange trees are widely grown in tropical and subtropical areas for their sweet fruit. The fruit of
6141-459: The most serious threat to orange production since 2010. It is characterized by streaks of different shades on the leaves, and deformed, poorly colored, unsavory fruit. In areas where the disease is endemic, citrus trees live for only five to eight years and never bear fruit suitable for consumption. In the western hemisphere, the disease was discovered in Florida in 1998, where it has attacked nearly all
6230-493: The peel , and used as a flavoring and garnish in desserts and cocktails . Sweet orange oil is a by-product of the juice industry produced by pressing the peel. It is used for flavoring food and drinks; it is employed in the perfume industry and in aromatherapy for its fragrance . The oil consists of approximately 90% D -limonene, a solvent used in household chemicals such as wood conditioners for furniture and—along with other citrus oils—detergents and hand cleansers. It
6319-607: The red color requires cool nights. The redness is mainly due to the anthocyanin pigment chrysanthemin (cyanidin 3- O -glucoside). Acidless oranges are an early-season fruit with very low levels of acid. They also are called "sweet" oranges in the United States, with similar names in other countries: douce in France, sucrena in Spain, dolce or maltese in Italy, meski in North Africa and
6408-428: The result of a deliberate repeatable single cross between two pure lines. A few F2 hybrid seed cultivars also exist, such as Achillea 'Summer Berries'. Some cultivars are agamospermous plants, which retain their genetic composition and characteristics under reproduction. Occasionally cultivars are raised from seed of a specially selected provenance – for example the seed may be taken from plants that are resistant to
6497-544: The rooms of the palace, while the Orangerie allowed year-round cultivation of the fruit to supply the court. When Louis condemned his finance minister, Nicolas Fouquet , in 1664, part of the treasures that he confiscated were over 1,000 orange trees from Fouquet's estate at Vaux-le-Vicomte . Spanish travelers introduced the sweet orange to the American continent. On his second voyage in 1493, Christopher Columbus may have planted
6586-899: The same cultivar. The production of cultivars generally entails considerable human involvement although in a few cases it may be as little as simply selecting variation from plants growing in the wild (whether by collecting growing tissue to propagate from or by gathering seed). Cultivars generally occur as ornamentals and food crops: Malus ' Granny Smith ' and Malus ' Red Delicious ' are cultivars of apples propagated by cuttings or grafting , Lactuca 'Red Sails' and Lactuca 'Great Lakes' are lettuce cultivars propagated by seeds. Named cultivars of Hosta and Hemerocallis plants are cultivars produced by micropropagation or division. Cultivars that are produced asexually are genetically identical and known as clones ; this includes plants propagated by division , layering , cuttings , grafts , and budding . The propagating material may be taken from
6675-464: The scientific Latin botanical name followed by a cultivar epithet . The cultivar epithet is usually in a vernacular language. The word cultivar originated from the need to distinguish between wild plants and those with characteristics that arose in cultivation, presently denominated cultigens . This distinction dates to the Greek philosopher Theophrastus (370–285 BC), the "Father of Botany", who
6764-625: The seedlings on board, and gave them to several Hawaiian chiefs in 1792. The sweet orange came to be grown across the Hawaiian Islands , but its cultivation stopped after the arrival of the Mediterranean fruit fly in the early 1900s. Florida farmers obtained seeds from New Orleans around 1872, after which orange groves were established by grafting the sweet orange on to sour orange rootstocks. The word "orange" derives ultimately from Proto-Dravidian or Tamil நாரம் ( nāram ). From there
6853-475: The stability of cultivated plant nomenclature. In recent times many ICRAs have also recorded trade designations and trademarks used in labelling plant material, to avoid confusion with established names. New names and other relevant data are collected by and submitted to the ICRA and in most cases there is no cost. The ICRA then checks each new epithet to ensure that it has not been used before and that it conforms with
6942-510: The total, followed by India, China, and Mexico. The United States Department of Agriculture has established grades for Florida oranges, primarily for oranges sold as fresh fruit. In the United States, groves are located mainly in Florida , California , and Texas . The majority of California's crop is sold as fresh fruit, whereas Florida's oranges are destined to juice products. The Indian River area of Florida produces high quality juice, which
7031-502: The trees ever since. It was reported in Brazil by Fundecitrus Brasil in 2004. As from 2009, 0.87% of the trees in Brazil's main orange growing areas (São Paulo and Minas Gerais) showed symptoms of greening, an increase of 49% over 2008. The disease is spread primarily by psyllid plant lice such as the Asian citrus psyllid ( Diaphorina citri Kuwayama), an efficient vector of the bacterium. Foliar insecticides reduce psyllid populations for
7120-430: The trees with water so as to cover them with a thin layer of ice, insulating them even if air temperatures drop far lower. This practice, however, offers protection only for a very short time. Another procedure involves burning fuel oil in smudge pots put between the trees. These burn with a great deal of particulate emission, so condensation of water vapor on the particulate soot prevents condensation on plants and raises
7209-432: The varietal name, rather than using the abbreviation "var." as is the present convention. Most of the varieties that Linnaeus enumerated were of "garden" origin rather than being wild plants. In time the need to distinguish between wild plants and those with variations that had been cultivated increased. In the nineteenth century many "garden-derived" plants were given horticultural names, sometimes in Latin and sometimes in
7298-496: The variety inserted into them because otherwise, the tree may decline, be less productive, or die. Among the advantages to grafting are that trees mature uniformly and begin to bear fruit earlier than those reproduced by seeds (3 to 4 years in contrast with 6 to 7 years), and that farmers can combine the best attributes of a scion with those of a rootstock. Canopy-shaking mechanical harvesters are being used increasingly in Florida to harvest oranges. Current canopy shaker machines use
7387-428: The wild and propagated for sale without any additional breeding work; some people consider this practice unethical . The formal scientific name of a cultivar, like Solanum tuberosum 'King Edward', is a way of uniquely designating a particular kind of plant. This scientific name is in the public domain and cannot be legally protected. Plant retailers wish to maximize their share of the market and one way of doing this
7476-460: The wild, from a cross between pure mandarin and pomelo parents. Sweet oranges have in turn given rise to many further hybrids including the grapefruit , which arose from a sweet orange x pomelo backcross. Spontaneous and engineered backcrosses between the sweet orange and mandarin oranges or tangerines have produced the clementine and murcott . The ambersweet is a complex sweet orange x (Orlando tangelo x clementine) hybrid. The citranges are
7565-414: The word cultivar in 1923 when he wrote that: The cultigen is a species, or its equivalent, that has appeared under domestication – the plant is cultigenous. I now propose another name, cultivar, for a botanical variety, or for a race subordinate to species, that has originated under cultivation; it is not necessarily, however, referable to a recognized botanical species. It is essentially the equivalent of
7654-431: The word entered Sanskrit नारङ्ग ( nāraṅga ), meaning 'orange tree'. The Sanskrit word reached European languages through Persian نارنگ ( nārang ) and its Arabic derivative نارنج ( nāranj ). The word entered Late Middle English in the 14th century via Old French pomme d'orenge . Other forms include Old Provençal auranja , Italian arancia , formerly narancia . In several languages,
7743-406: The world's agricultural food crops are almost exclusively cultivars that have been selected for characters such as improved yield, flavour, and resistance to disease, and very few wild plants are now used as food sources. Trees used in forestry are also special selections grown for their enhanced quality and yield of timber . Cultivars form a major part of Liberty Hyde Bailey 's broader group,
7832-477: Was keenly aware of this difference. Botanical historian Alan Morton noted that Theophrastus in his Historia Plantarum ( Enquiry into Plants ) "had an inkling of the limits of culturally induced ( phenotypic ) changes and of the importance of genetic constitution" ( Historia Plantarum , Book 3, 2, 2 and Causa Plantarum , Book 1, 9, 3). The International Code of Nomenclature for algae, fungi, and plants uses as its starting point for modern botanical nomenclature
7921-434: Was the maternal parent of the first orange. Based on genomic analysis, the relative proportions of the ancestral species in the sweet orange are approximately 42% pomelo and 58% mandarin. All varieties of the sweet orange descend from this prototype cross, differing only by mutations selected for during agricultural propagation. Sweet oranges have a distinct origin from the bitter orange, which arose independently, perhaps in
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