Genus ( / ˈ dʒ iː n ə s / ; pl. : genera / ˈ dʒ ɛ n ər ə / ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses . In binomial nomenclature , the genus name forms the first part of the binomial species name for each species within the genus.
75-449: See text Capsicum ( / ˈ k æ p s ɪ k ə m / ) is a genus of flowering plants in the nightshade family Solanaceae , native to the Americas , cultivated worldwide for their edible fruit, which are generally known as " peppers " or "capsicum". Chili peppers grow on five species of Capsicum . Sweet or bell peppers and some chili peppers are Capsicum annuum , making it
150-402: A lipophilic chemical that can produce a burning sensation ( pungency or spiciness ) in the mouth of the eater. Most mammals find this unpleasant, whereas birds are unaffected. The secretion of capsaicin protects the fruit from consumption by insects . Capsaicin is present in large quantities in the placental tissue (which holds the seeds ), the internal membranes, and to a lesser extent,
225-399: A nonlethal means of incapacitating a person, and in a more widely dispersed form for riot control , or by individuals for personal defense. Capsaicin in vegetable oils or horticultural products can be used in gardening as a natural insecticide . Capsicum fruits can be eaten raw or cooked. Those used in cooking are generally varieties of the C. annuum and C. frutescens species, though
300-557: A species : see Botanical name and Specific name (zoology) . The rules for the scientific names of organisms are laid down in the nomenclature codes , which allow each species a single unique name that, for animals (including protists ), plants (also including algae and fungi ) and prokaryotes ( bacteria and archaea ), is Latin and binomial in form; this contrasts with common or vernacular names , which are non-standardized, can be non-unique, and typically also vary by country and language of usage. Except for viruses ,
375-451: A dip of tomato paste, onions, garlic, and parsley; or stuffed with a variety of products, such as minced meat and rice, beans, or cottage cheese and eggs. Capsicum are the main ingredient in the traditional tomato and capsicum dip lyutenitsa and ajvar . They are in the base of different kinds of pickled vegetables dishes, turshiya . Capsicum is also used widely in Italian cuisine , and
450-410: A few others are used, as well. They are suitable for stuffing with fillings such as cheese, meat, or rice. They are frequently used both chopped and raw in salads, or cooked in stir-fries or other mixed dishes. They can be sliced into strips and fried, roasted whole or in pieces, or chopped and incorporated into salsas or other sauces, of which they are often a main ingredient. They can be preserved in
525-726: A flavouring. In New Mexico , there is a capsicum annuum cultivar group called the New Mexico chile which is a mainstay of the state's New Mexican cuisine . Only Capsicum frutescens L. and Capsicum annuum L. are Generally recognized as safe . The name given to the Capsicum fruits varies between English-speaking countries. Genus The composition of a genus is determined by taxonomists . The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including
600-450: A given genotype is well-suited for an environment, self-pollination helps to keep this trait stable in the species. Not being dependent on pollinating agents allows self-pollination to occur when bees and wind are nowhere to be found. Self-pollination or cross pollination can be an advantage when the number of flowers is small or they are widely spaced. During self-pollination, the pollen grains are not transmitted from one flower to another. As
675-564: A lack of variation that allows no adaptation to the changing environment or potential pathogen attack. Self-pollination can lead to inbreeding depression caused by expression of deleterious recessive mutations, or to the reduced health of the species, due to the breeding of related specimens. This is why many flowers that could potentially self-pollinate have a built-in mechanism to avoid it, or make it second choice at best. Genetic defects in self-pollinating plants cannot be eliminated by genetic recombination and offspring can only avoid inheriting
750-643: A later homonym of a validly published name is a nomen illegitimum or nom. illeg. ; for a full list refer to the International Code of Nomenclature for algae, fungi, and plants and the work cited above by Hawksworth, 2010. In place of the "valid taxon" in zoology, the nearest equivalent in botany is " correct name " or "current name" which can, again, differ or change with alternative taxonomic treatments or new information that results in previously accepted genera being combined or split. Prokaryote and virus codes of nomenclature also exist which serve as
825-621: A long time and redescribed as new by a range of subsequent workers, or if a range of genera previously considered separate taxa have subsequently been consolidated into one. For example, the World Register of Marine Species presently lists 8 genus-level synonyms for the sperm whale genus Physeter Linnaeus, 1758, and 13 for the bivalve genus Pecten O.F. Müller, 1776. Within the same kingdom, one generic name can apply to one genus only. However, many names have been assigned (usually unintentionally) to two or more different genera. For example,
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#1732852764754900-409: A reference for designating currently accepted genus names as opposed to others which may be either reduced to synonymy, or, in the case of prokaryotes, relegated to a status of "names without standing in prokaryotic nomenclature". An available (zoological) or validly published (botanical) name that has been historically applied to a genus but is not regarded as the accepted (current/valid) name for
975-491: A result, there is less wastage of pollen. Also, self-pollinating plants do not depend on external carriers. They also cannot make changes in their characters and so the features of a species can be maintained with purity. Self-pollination also helps to preserve parental characters as the gametes from the same flower are evolved. It is not necessary for flowers to produce nectar, scent, or to be colourful in order to attract pollinators. The disadvantages of self-pollination come from
1050-418: A single plant produces both open, potentially out-crossed and closed, obligately self-pollinated cleistogamous flowers. The evolutionary shift from outcrossing to self-fertilization is one of the most common evolutionary transitions in plants. About 10-15% of flowering plants are predominantly self-fertilizing. A few well-studied examples of self-pollinating species are described below. Self-pollination in
1125-586: A substitute for) existing 'hot' culinary spices such as black pepper and Sichuan pepper spread rapidly, giving rise to the modern forms a number of staple dishes such as Channa masala , Tom yum , Laziji , and Kimchi . This in turn influenced Anglo-Indian and American Chinese cuisine , most notably with the development of British and American forms of curry powder (based on Indian spice preparations such as garam masala ), and dishes such as General Tso's chicken and chicken tikka masala . According to Richard Pankhurst , C. frutescens (known as barbaré )
1200-1041: A sunny position with warm, loamy soil, ideally 21 to 29 °C (70 to 84 °F), that is moist but not waterlogged. Extremely moist soils can cause seedlings to "damp-off" and reduce germination. The plants will tolerate (but do not like) temperatures down to 12 °C (54 °F) and they are sensitive to cold. For flowering, Capsicum is a non- photoperiod -sensitive crop. The flowers can self-pollinate . However, at extremely high temperature, 30 to 38 °C (86 to 100 °F), pollen loses viability, and flowers are much less likely to result in fruit. Capsicum consists of 20–27 species, five of which are widely cultivated: C. annuum , C. baccatum , C. chinense , C. frutescens , and C. pubescens . Phylogenetic relationships between species have been investigated using biogeographical , morphological , chemosystematic, hybridization , and genetic data. Fruits of Capsicum can vary tremendously in color, shape, and size both between and within species, which has led to confusion over
1275-427: A taxon; however, the names published in suppressed works are made unavailable via the relevant Opinion dealing with the work in question. In botany, similar concepts exist but with different labels. The botanical equivalent of zoology's "available name" is a validly published name . An invalidly published name is a nomen invalidum or nom. inval. ; a rejected name is a nomen rejiciendum or nom. rej. ;
1350-455: A total of c. 520,000 published names (including synonyms) as at end 2019, increasing at some 2,500 published generic names per year. "Official" registers of taxon names at all ranks, including genera, exist for a few groups only such as viruses and prokaryotes, while for others there are compendia with no "official" standing such as Index Fungorum for fungi, Index Nominum Algarum and AlgaeBase for algae, Index Nominum Genericorum and
1425-731: Is a vegetarian stew with chilies and zucchini as main ingredients. They can also be added, finely chopped, to gazpacho as a garnish. In some regions, bacon is salted and dusted in paprika for preservation. Cheese can also be rubbed with paprika to lend it flavour and colour. Dried round chiles called ñoras are used for arroz a banda . After being introduced by the Portuguese, chile peppers saw widespread adoption throughout South, Southeast, and East Asia, especially in India, Thailand, Vietnam, China, and Korea. Several new cultivars were developed in these countries, and their use in combination with (or as
1500-458: Is an evolutionary adaptation that can persist over many generations. Its out-crossing progenitor was identified as Capsella grandiflora . Arabidopsis thaliana is a predominantly self-pollinating plant with an out-crossing rate in the wild estimated at less than 0.3%. A study suggested that self-pollination evolved roughly a million years ago or more. Meiosis followed by self-pollination produces little overall genetic variation. This raises
1575-596: Is discouraged by both the International Code of Zoological Nomenclature and the International Code of Nomenclature for algae, fungi, and plants , there are some five thousand such names in use in more than one kingdom. For instance, A list of generic homonyms (with their authorities), including both available (validly published) and selected unavailable names, has been compiled by the Interim Register of Marine and Nonmarine Genera (IRMNG). The type genus forms
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#17328527647541650-450: Is intermingled with C. baccatum . C. annuum inc. many varieties C. frutescens (in part) and C. eximium C. chinense and C. frutescens (in part) C. baccatum (in part) C. chacoense (in part) C. baccatum (in part) C. chacoense (in part) C. pubescens inc. Chile de caballo C. eximium , a pungent chili pepper with purple flowers C. lycianthoides Ideal growing conditions for peppers include
1725-476: Is inversely correlated with gene density. Pepper is predicted to have 34,903 genes, approximately the same number as both tomato and potato , two related species within the family Solanaceae . Many types of peppers have been bred for heat, size, and yield. Along with selection of specific fruit traits such as flavor and color, specific pest, disease and abiotic stress resistances are continually being selected. Breeding occurs in several environments dependent on
1800-647: Is measured in Scoville heat units (SHU) and this value varies significantly among Capsicum varieties. For example, a typical Bell pepper has a value of zero SHU and a Jalapeño has a value of 4000–8000 SHU. In 2017, the Guinness Book of World Records listed the Carolina Reaper as the world's hottest pepper at 1,641,183 SHU, according to tests conducted by Winthrop University in South Carolina, United States. In 2023,
1875-612: Is simply pepper in the United Kingdom and Ireland . The name capsicum is used in Australia , India , Malaysia , New Zealand . Capsicums are solanaceous plants within the tribe Capsiceae , and are closely related to Lycianthes . A 2020 study using ribosomal DNA provided the following phylogenetic tree. It can be seen that in two of the clades, the species C. frutescens is intermingled with C. eximium in one subclade and C. chinense in another subclade; and that C. chacoense
1950-460: Is somewhat arbitrary. Although all species within a genus are supposed to be "similar", there are no objective criteria for grouping species into genera. There is much debate among zoologists about whether enormous, species-rich genera should be maintained, as it is extremely difficult to come up with identification keys or even character sets that distinguish all species. Hence, many taxonomists argue in favor of breaking down large genera. For instance,
2025-474: Is the type species , and the generic name is permanently associated with the type specimen of its type species. Should the specimen turn out to be assignable to another genus, the generic name linked to it becomes a junior synonym and the remaining taxa in the former genus need to be reassessed. In zoological usage, taxonomic names, including those of genera, are classified as "available" or "unavailable". Available names are those published in accordance with
2100-736: Is the transfer of pollen, by wind or animals such as insects and birds, from the anther to the stigma of flowers on separate plants. Both hermaphrodite and monoecious species have the potential for self-pollination leading to self-fertilization unless there is a mechanism to avoid it. 80% of all flowering plants are hermaphroditic, meaning they contain both sexes in the same flower, while 5 percent of plant species are monoecious. The remaining 15% would therefore be dioecious (each plant unisexual). Plants that self-pollinate include several types of orchids, and sunflowers. Dandelions are capable of self-pollination as well as cross-pollination. There are several advantages for self-pollinating flowers. Firstly, if
2175-620: Is thought to be the country with the highest cultivated Capsicum diversity since varieties of all five domesticates are commonly sold in markets in contrast to other countries. Bolivia is considered to be the country where the largest diversity of wild Capsicum peppers are consumed. Bolivian consumers distinguish two basic forms: ulupicas, species with small round fruits including C. eximium , C. cardenasii , C. eshbaughii , and C. caballeroi landraces; and arivivis, with small elongated fruits including C. baccatum var. baccatum and C. chacoense varieties. The amount of capsaicin
2250-560: Is used for the opposite case, where pollen from one plant moves to a different plant. There are two types of self-pollination: in autogamy , pollen is transferred to the stigma of the same flower; in geitonogamy , pollen is transferred from the anther of one flower to the stigma of another flower on the same flowering plant, or from microsporangium to ovule within a single ( monoecious ) gymnosperm. Some plants have mechanisms that ensure autogamy, such as flowers that do not open ( cleistogamy ), or stamens that move to come into contact with
2325-465: The Capsicum annuum species, such as the cultivars Giant Marconi, Yummy Sweets, Jimmy Nardello, and Italian Frying peppers ( Cubanelles ). Chili peppers are important in the medicine of Indigenous peoples , and capsaicin is used in modern medicine mainly in topical medications as a circulatory stimulant and analgesic . In more recent times, an aerosol extract of capsaicin, known as capsicum or pepper spray , has become used by law enforcement as
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2400-676: The Greek word κάπτω , kapto , 'to gulp'. The name pepper comes from the similarity of piquance (spiciness or "heat") of the flavor to that of black pepper , Piper nigrum , although there is no botanical relationship with it or with Sichuan pepper . The original term chilli came from the Nahuatl word chīlli , denoting a larger Capsicum variety cultivated at least since 3000 BC. Different varieties were cultivated in South America, where they are known as ajíes (singular ají ), from
2475-526: The Guinness Book of Records recognized Pepper X as the world's hottest pepper. Sources: According to Adepoju et al. (2021), the most commonly occurring Capsicum cultivars in Nigeria (and West Africa) are: C. fructescens var. fructescens L.; C. fructescens var. baccatum (L.) Irish; C. annuum var annuum L; C. annuum var. grossum (L.) Sendtn. and C. chinense Jacq. Most Capsicum species are 2n=2x=24. A few of
2550-621: The International Code of Zoological Nomenclature ; the earliest such name for any taxon (for example, a genus) should then be selected as the " valid " (i.e., current or accepted) name for the taxon in question. Consequently, there will be more available names than valid names at any point in time; which names are currently in use depending on the judgement of taxonomists in either combining taxa described under multiple names, or splitting taxa which may bring available names previously treated as synonyms back into use. "Unavailable" names in zoology comprise names that either were not published according to
2625-799: The International Plant Names Index for plants in general, and ferns through angiosperms, respectively, and Nomenclator Zoologicus and the Index to Organism Names for zoological names. Totals for both "all names" and estimates for "accepted names" as held in the Interim Register of Marine and Nonmarine Genera (IRMNG) are broken down further in the publication by Rees et al., 2020 cited above. The accepted names estimates are as follows, broken down by kingdom: The cited ranges of uncertainty arise because IRMNG lists "uncertain" names (not researched therein) in addition to known "accepted" names;
2700-521: The Quechua term for Capsicum . The fruit (botanically a berry ) of Capsicum plants has a variety of names depending on place and type. The more piquant varieties are called chili peppers , or simply chilis . The large, mild form is called bell pepper , or is named by color ( green pepper , green bell pepper , red bell pepper , etc.) in North America and South Africa , sweet pepper . The name
2775-404: The platypus belongs to the genus Ornithorhynchus although George Shaw named it Platypus in 1799 (these two names are thus synonyms ) . However, the name Platypus had already been given to a group of ambrosia beetles by Johann Friedrich Wilhelm Herbst in 1793. A name that means two different things is a homonym . Since beetles and platypuses are both members of the kingdom Animalia,
2850-461: The "bell pepper" variety, which is sold in both its immature green state and in its red, yellow, or orange ripe state. This same species has other varieties, as well, such as the Anaheim chiles often used for stuffing, the dried ancho (before being dried it is called a poblano ) chile used to make chili powder , the mild-to-hot, ripe jalapeno used to make smoked jalapeno, known as chipotle . Peru
2925-469: The French botanist Joseph Pitton de Tournefort (1656–1708) is considered "the founder of the modern concept of genera". The scientific name (or the scientific epithet) of a genus is also called the generic name ; in modern style guides and science, it is always capitalised. It plays a fundamental role in binomial nomenclature , the system of naming organisms , where it is combined with the scientific name of
3000-519: The Madagascan orchid Bulbophyllum bicoloratum occurs by virtue of a rostellum that may have regained its stigmatic function as part of the distal median stigmatic lobe. In the Chinese herb Caulokaempferia coenobialis a film of pollen is transported from the anther (pollen sacs) by an oily emulsion that slides sideways along the flower's style and into the individual's own stigma. The lateral flow of
3075-521: The New World, and it would become very difficult to untangle Spanish cooking from chiles. Ground chiles, or paprika, hot or otherwise, are a key ingredient in chorizo , which is then called picante (if hot chile is added) or dulce (if otherwise). Paprika is an important ingredient in rice dishes, and plays a definitive role in squid Galician style ( polbo á feira ). Chopped chiles are used in fish or lamb dishes such as ajoarriero or chilindrón . Pisto
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3150-480: The Spanish Philippines colonies, whence it spread to Asia. The Portuguese brought them to their African and Asiatic possessions such as India. All varieties were appreciated but the hot ones were particularly appreciated, because they could enliven an otherwise monotonous diet during times of dietary restriction, such as during religious observances. Spanish cuisine soon benefited from the discovery of chiles in
3225-459: The aid of any pollinating agent or medium. This type of self-pollination appears to be an adaptation to the windless, drought conditions that are present when flowering occurs, at a time when insects are scarce. Without pollinators for outcrossing, the necessity of ensuring reproductive success appears to outweigh potential adverse effects of inbreeding. Such an adaptation may be widespread among species in similar environments. Self-pollination in
3300-442: The base for higher taxonomic ranks, such as the family name Canidae ("Canids") based on Canis . However, this does not typically ascend more than one or two levels: the order to which dogs and wolves belong is Carnivora ("Carnivores"). The numbers of either accepted, or all published genus names is not known precisely; Rees et al., 2020 estimate that approximately 310,000 accepted names (valid taxa) may exist, out of
3375-443: The cultivation of this plant, where it was harvested year-round. In 2005, a poll of 2,000 people revealed the capsicum to be Britain's fourth-favourite culinary vegetable. In Hungary , sweet yellow capsicum – along with tomatoes – is the main ingredient of lecsó . In Bulgaria , South Serbia , and North Macedonia , capsicum are very popular, too. They can be eaten in salads, like shopska salata ; fried and then covered with
3450-399: The day. If this is not accomplished, the flowers self-pollinate as they are closing. Among other plants that can self-pollinate are many kinds of orchids , peas , sunflowers and tridax . Most of the self-pollinating plants have small, relatively inconspicuous flowers that shed pollen directly onto the stigma, sometimes even before the bud opens. Self-pollinated plants expend less energy in
3525-402: The deleterious attributes through a chance mutation arising in a gamete . About 42% of flowering plants exhibit a mixed mating system in nature. In the most common kind of system, individual plants produce a single flower type and fruits may contain self-pollinated, out-crossed or a mixture of progeny types. Another mixed mating system is referred to as dimorphic cleistogamy. In this system
3600-421: The environment. The most recognized Capsicum without capsaicin is the bell pepper , a cultivar of Capsicum annuum , which has a zero rating on the Scoville scale . The lack of capsaicin in bell peppers is due to a recessive gene that eliminates capsaicin and, consequently, the hot taste usually associated with the rest of the genus Capsicum . There are also other peppers without capsaicin, mostly within
3675-413: The epidermal cells of the interlocular septa of pungent fruits, that blister formation only occurs as a result of capsaicinoid accumulation, and that pungency and blister formation are controlled by a single locus, Pun1 , for which there exist at least two recessive alleles that result in non-pungency of C. chinense fruits. The amount of capsaicin per fruit is highly variable, depending on genetics and
3750-431: The film of pollen along the style appears to be due solely to the spreading properties of the oily emulsion and not to gravity. This strategy may have evolved to cope with a scarcity of pollinators in the extremely shady and humid habitats of C. coenobialis . Capsella rubella (Red Shepherd's Purse) is a self-pollinating species that became self-compatible 50,000 to 100,000 years ago, indicating that self-pollination
3825-446: The form "author, year" in zoology, and "standard abbreviated author name" in botany. Thus in the examples above, the genus Canis would be cited in full as " Canis Linnaeus, 1758" (zoological usage), while Hibiscus , also first established by Linnaeus but in 1753, is simply " Hibiscus L." (botanical usage). Each genus should have a designated type , although in practice there is a backlog of older names without one. In zoology, this
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#17328527647543900-543: The form of a jam , or by drying, pickling, or freezing. Dried Capsicum may be reconstituted whole, or processed into flakes or powders. Pickled or marinated Capsicum are frequently added to sandwiches or salads. Frozen Capsicum are used in stews, soups, and salsas. Extracts can be made and incorporated into hot sauces. The Spanish conquistadores soon became aware of their culinary properties, and brought them back to Europe, together with cocoa, potatoes, sweet potatoes, tobacco, maize, beans, and turkeys. They also brought it to
3975-727: The generic name (or its abbreviated form) still forms the leading portion of the scientific name, for example, Canis lupus lupus for the Eurasian wolf subspecies, or as a botanical example, Hibiscus arnottianus ssp. immaculatus . Also, as visible in the above examples, the Latinised portions of the scientific names of genera and their included species (and infraspecies, where applicable) are, by convention, written in italics . The scientific names of virus species are descriptive, not binomial in form, and may or may not incorporate an indication of their containing genus; for example,
4050-543: The hot species are used all around the southern part of Italy as a common spice (sometimes served with olive oil ). Capsicums are used in many dishes; they can be cooked by themselves in a variety of ways (roasted, fried, deep-fried) and are a fundamental ingredient for some delicatessen specialities, such as nduja . Capsicums are also used extensively in Sri Lanka cuisine as side dishes. The Maya and Aztec people of Mesoamerica used Capsicum fruit in cocoa drinks as
4125-432: The idea that a newly defined genus should fulfill these three criteria to be descriptively useful: Moreover, genera should be composed of phylogenetic units of the same kind as other (analogous) genera. The term "genus" comes from Latin genus , a noun form cognate with gignere ('to bear; to give birth to'). The Swedish taxonomist Carl Linnaeus popularized its use in his 1753 Species Plantarum , but
4200-628: The largest component, with 23,236 ± 5,379 accepted genus names, of which 20,845 ± 4,494 are angiosperms (superclass Angiospermae). By comparison, the 2018 annual edition of the Catalogue of Life (estimated >90% complete, for extant species in the main) contains currently 175,363 "accepted" genus names for 1,744,204 living and 59,284 extinct species, also including genus names only (no species) for some groups. The number of species in genera varies considerably among taxonomic groups. For instance, among (non-avian) reptiles , which have about 1180 genera,
4275-403: The lizard genus Anolis has been suggested to be broken down into 8 or so different genera which would bring its ~400 species to smaller, more manageable subsets. Self-pollination Self-pollination is a form of pollination in which pollen arrives at the stigma of a flower (in flowering plants ) or at the ovule (in gymnosperms ) of the same plant. The term cross-pollination
4350-403: The most (>300) have only 1 species, ~360 have between 2 and 4 species, 260 have 5–10 species, ~200 have 11–50 species, and only 27 genera have more than 50 species. However, some insect genera such as the bee genera Lasioglossum and Andrena have over 1000 species each. The largest flowering plant genus, Astragalus , contains over 3,000 species. Which species are assigned to a genus
4425-425: The most cultivated species in the genus. Capsicum is native to South America and Central America . These plants have been evolving for 17 million years. It was domesticated and cultivated at least since 3000 BC, as evidenced by remains of chili peppers found in pottery from Puebla and Oaxaca . The generic name may come from Latin capsa , meaning 'box', presumably alluding to the pods; or possibly from
4500-428: The name could not be used for both. Johann Friedrich Blumenbach published the replacement name Ornithorhynchus in 1800. However, a genus in one kingdom is allowed to bear a scientific name that is in use as a generic name (or the name of a taxon in another rank) in a kingdom that is governed by a different nomenclature code. Names with the same form but applying to different taxa are called "homonyms". Although this
4575-417: The non-domesticated species are 2n=2x=26. All are diploid . The Capsicum annuum and Capsicum chinense genomes were completed in 2014. The Capsicum annuum genome is approximately 3.48 Gb, making it larger than the human genome. Over 75% of the pepper genome is composed of transposable elements , mostly Gypsy elements, distributed widely throughout the genome. The distribution of transposable elements
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#17328527647544650-533: The other fleshy parts of the fruits of plants in this genus. The seeds themselves do not produce any capsaicin, although the highest concentration of capsaicin can be found in the white pith around the seeds. Most of the capsaicin in a pungent (hot) pepper is concentrated in blisters on the epidermis of the interior ribs (septa) that divide the chambers, or locules , of the fruit to which the seeds are attached. A study on capsaicin production in fruits of C. chinense showed that capsaicinoids are produced only in
4725-634: The production of pollinator attractants and can grow in areas where the kinds of insects or other animals that might visit them are absent or very scarce—as in the Arctic or at high elevations. Self-pollination limits the variety of progeny and may depress plant vigor . However, self-pollination can be advantageous, allowing plants to spread beyond the range of suitable pollinators or produce offspring in areas where pollinator populations have been greatly reduced or are naturally variable. Pollination can also be accomplished by cross-pollination . Cross-pollination
4800-526: The provisions of the ICZN Code, e.g., incorrect original or subsequent spellings, names published only in a thesis, and generic names published after 1930 with no type species indicated. According to "Glossary" section of the zoological Code, suppressed names (per published "Opinions" of the International Commission of Zoological Nomenclature) remain available but cannot be used as the valid name for
4875-510: The question of how meiosis in self-pollinating plants is adaptively maintained over extended periods (i.e. for roughly a million years or more, as in the case of A. thaliana ) in preference to a less complicated and less costly asexual ameiotic process for producing progeny. An adaptive benefit of meiosis that may explain its long-term maintenance in self-pollinating plants is efficient recombinational repair of DNA damage. This benefit can be realized at each generation (even when genetic variation
4950-408: The relationships among taxa. Chemosystematic studies helped distinguish the difference between varieties and species. For example, C. baccatum var. baccatum had the same flavonoids as C. baccatum var. pendulum , which led researchers to believe the two groups belonged to the same species. Many varieties of the same species can be used in many different ways; for example, C. annuum includes
5025-420: The slipper orchid Paphiopedilum parishii occurs when the anther changes from a solid to a liquid state and directly contacts the stigma surface without the aid of any pollinating agent. The tree-living orchid Holcoglossum amesianum has a type of self-pollination mechanism in which the bisexual flower turns its anther against gravity through 360° in order to insert pollen into its own stigma cavity—without
5100-497: The specific name particular to the wolf. A botanical example would be Hibiscus arnottianus , a particular species of the genus Hibiscus native to Hawaii. The specific name is written in lower-case and may be followed by subspecies names in zoology or a variety of infraspecific names in botany . When the generic name is already known from context, it may be shortened to its initial letter, for example, C. lupus in place of Canis lupus . Where species are further subdivided,
5175-412: The standard format for a species name comprises the generic name, indicating the genus to which the species belongs, followed by the specific epithet, which (within that genus) is unique to the species. For example, the gray wolf 's scientific name is Canis lupus , with Canis ( Latin for 'dog') being the generic name shared by the wolf's close relatives and lupus (Latin for 'wolf') being
5250-419: The stigma. The term selfing that is often used as a synonym is not limited to self-pollination, but also applies to other types of self-fertilization. Few plants self-pollinate without the aid of pollen vectors (such as wind or insects). The mechanism is seen most often in some legumes such as peanuts . In another legume, soybeans , the flowers open and remain receptive to insect cross pollination during
5325-403: The taxon is termed a synonym ; some authors also include unavailable names in lists of synonyms as well as available names, such as misspellings, names previously published without fulfilling all of the requirements of the relevant nomenclatural code, and rejected or suppressed names. A particular genus name may have zero to many synonyms, the latter case generally if the genus has been known for
5400-817: The use of the final variety including but not limited to: conventional, organic , hydroponic , green house and shade house production environments. Several breeding programs are being conducted by corporations and universities. In the United States , New Mexico State University has released several varieties in the last few years. Cornell University has worked to develop regionally adapted varieties that work better in cooler, damper climates. Other universities such as UC Davis , University of Wisconsin-Madison , and Oregon State University have smaller breeding programs. Many vegetable seed companies breed different types of peppers as well. The fruit of most species of Capsicum contains capsaicin (methyl-n-vanillyl nonenamide),
5475-566: The values quoted are the mean of "accepted" names alone (all "uncertain" names treated as unaccepted) and "accepted + uncertain" names (all "uncertain" names treated as accepted), with the associated range of uncertainty indicating these two extremes. Within Animalia, the largest phylum is Arthropoda , with 151,697 ± 33,160 accepted genus names, of which 114,387 ± 27,654 are insects (class Insecta). Within Plantae, Tracheophyta (vascular plants) make up
5550-429: The virus species " Salmonid herpesvirus 1 ", " Salmonid herpesvirus 2 " and " Salmonid herpesvirus 3 " are all within the genus Salmonivirus ; however, the genus to which the species with the formal names " Everglades virus " and " Ross River virus " are assigned is Alphavirus . As with scientific names at other ranks, in all groups other than viruses, names of genera may be cited with their authorities, typically in
5625-473: Was so important to the national cuisine of Ethiopia , at least as early as the 19th century, "that it was cultivated extensively in the warmer areas wherever the soil was suitable." Although it was grown in every province, barbaré was especially extensive in Yejju , "which supplied much of Showa , as well as other neighbouring provinces." He mentions the upper Golima River valley as being almost entirely devoted to
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