Microcitrus Inodora
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Microcitrus Inodora
Citrus taxonomy refers to the botanical classification of the species, varieties, cultivars, and graft hybrids within the genus ''Citrus'' and related genera, found in cultivation and in the wild. Citrus taxonomy is complex and controversial. Cultivated citrus are derived from various citrus species found in the wild. Some are only selections of the original wild types, many others are hybrids between two or more original species, and some are backcrossed hybrids between a hybrid and one of the hybrid's parent species. Citrus plants hybridize easily between species with completely different morphologies, and similar-looking citrus fruits may have quite different ancestries. Some differ only in disease resistance. Conversely, different-looking varieties may be nearly genetically identical, and differ only by a bud mutation. Detailed genomic analysis of wild and domesticated citrus cultivars has suggested that the progenitor of modern citrus species expanded out of the Himalaya ...
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Nucellar
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a ''megagametophyte''— is also called the ''embryo sac'' in angiosperms. The megagametophyte produces an egg cell for the purpose of fertilization. The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule. Location within the plant In flowering plants, the ovule is located inside the portion of the flower called the gynoecium. The ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a ''funiculus'' (p ...
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Wallace Line
The Wallace Line or Wallace's Line is a faunal boundary line drawn in 1859 by the British naturalist Alfred Russel Wallace and named by English biologist Thomas Henry Huxley that separates the biogeographical realms of Asia and Wallacea, a transitional zone between Asia and Australia. West of the line are found organisms related to Asiatic species; to the east, a mixture of species of Asian and Australian origin is present. Wallace noticed this clear division during his travels through the East Indies in the 19th century. The line runs through Indonesia, between Borneo and Sulawesi (Celebes), and through the Lombok Strait between Bali and Lombok. The distance between Bali and Lombok is small, about . The distributions of many bird species observe the line, since many birds do not cross even the shortest stretches of open ocean water. Some bats have distributions that cross the line, but larger terrestrial mammals are generally limited to one side or the other; exceptions include ...
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Monsoon
A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal oscillation of the Intertropical Convergence Zone (ITCZ) between its limits to the north and south of the equator. Usually, the term monsoon is used to refer to the rainy phase of a seasonally changing pattern, although technically there is also a dry phase. The term is also sometimes used to describe locally heavy but short-term rains. The major monsoon systems of the world consist of the West African, Asia–Australian, the North American, and South American monsoons. The term was first used in English in British India and neighboring countries to refer to the big seasonal winds blowing from the Bay of Bengal and Arabian Sea in the southwest bringing heavy rainfall to the area. Etymology The etymology of the word monsoon is not wholl ...
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Citrus Linczangensis
''Citrus'' is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus ''Citrus'' is native to South Asia, East Asia, Southeast Asia, Melanesia, and Australia. Various citrus species have been used and domesticated by indigenous cultures in these areas since ancient times. From there its cultivation spread into Micronesia and Polynesia by the Austronesian expansion (c. 3000–1500 BCE); and to the Middle East and the Mediterranean (c. 1200 BCE) via the incense trade route, and onwards to Europe and the Americas. History Citrus plants are native to subtropical and tropical regions of Asia, Island Southeast Asia, Near Oceania, and northeastern Australia. Domestication of citrus species involved much hybridization and introgression, leaving much uncertainty about when and where domestication first happened. A genomic, phylogenic, and ...
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Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ...
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Mangshanyegan
The mangshanyegan (; ''Citrus mangshanensis'') is a wild citrus fruit species. The mangshanyegan is native to mountain forests in Mangshan, Hunan province, China, where it was first reported in the 1980s. It is genetically distinct from the mandarin orange, with which it has morphological similarities, and the term 'Mangshan wild mandarins' as well as the species name ''C. mangshanensis'' have been used both for the mangshanyegan and for wild true mandarins of the same region. Genomic sequencing shows the mangshanyegan to be one of a small number of pure (non-hybrid) citrus species, having diverged from other members of the genus at the initial branching of ''Citrus'' radiation in the Late Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen .... It is genetically similar to ...
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Micrantha (citrus)
The micrantha is a wild citrus from the papeda group, native to southern Philippines, particularly islands of Cebu and Bohol. Two varieties are recognized: small-flowered papeda (''C. hystrix'' var. ''micrantha''), locally known as ''biasong'', and small-fruited papeda (''C. hystrix'' var. ''microcarpa'') or ''samuyao''. Long viewed as a separate species, ''C. micrantha'', it is now generally viewed to fall within ''Citrus hystrix'', but genomic data on the latter is insufficient for a definitive conclusion. A micrantha was one of the progenitor species of some varieties of lime. Description The micrantha was first described to Western science in 1915 by Peter Jansen Wester, who worked for the Philippine Bureau of Agriculture at the time. Biasong Wester collected ripe fruit specimens of biasong (small-flowered papeda, ''Citrus hystrix'' var. ''micrantha'') on islands of Cebu, Bohol, Dumaguete, Negros, and in the Zamboanga and Misamis provinces in Mindanao. The frui ...
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Kumquat
Kumquats (; zh, 金桔), or cumquats in Australian English, are a group of small fruit-bearing trees in the flowering plant family Rutaceae. Their taxonomy is disputed. They were previously classified as forming the now-historical genus ''Fortunella'' or placed within ''Citrus'', . Different classifications have alternatively assigned them to anywhere from a single species, ''C. japonica'', to numerous species representing each cultivar. Recent genomic analysis would define three pure species, ''Citrus hindsii'', ''C. margarita'' and ''C. crassifolia'', with ''C. x japonica'' being a hybrid of the last two. The edible fruit closely resembles the orange (''Citrus sinensis'') in color and shape but is much smaller, being approximately the size of a large olive. The kumquat is a fairly cold-hardy citrus. Etymology The English name "kumquat" is a borrowing of the Cantonese ''gāmgwāt'' (). Origin The kumquat plant is native to Southern China. The historical reference to kum ...
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Round Lime
''Citrus australis'', the Dooja, round lime, Australian lime or Australian round lime, is a large shrub or small tree producing an edible fruit. It grows in forest margins in the Beenleigh area and northwards, in Queensland, Australia. ''Citrus australis'' is a tree up to tall. Fruits are spherical or slightly pear-shaped, across, with a thick green or yellow skin and pale green pulp. The 1889 book ''The Useful Native Plants of Australia'' records that "The fruit, which is an inch and a-half in diameter and almost globular, yields an agreeable beverage from its acid juice." Taxonomy A member of the Rutaceae family, ''Citrus australis'' is also known as the Australian round lime, Australia sweet, dooja, Gympie lime, native lime, native orange, or the round lime. It is part of the three main types of indigenous limes that can be found in Australia: the first is the Australian finger lime (''Citrus australasica''), the second is the Australian desert lime ('' Citrus glauca' ...
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Finger Lime
''Citrus australasica'', the Australian finger lime or caviar lime, is a thorny understorey shrub or small tree of lowland subtropical rainforest and rainforest in the coastal border region of Queensland and New South Wales, Australia. It has edible fruits which are under development as a commercially sold crop. Description The plant is in height. The leaves are small, long and wide, glabrous, with a notched tip and crenate towards the apex. Flowers are white with petals long. The fruit is cylindrical, long, sometimes slightly curved, coming in different colours, including pink and green. Cultivation and uses History Early settlers consumed the fruitLow, Tim, ''Wild Food Plants of Australia'', and retained the trees when clearing for agriculture. Colonial botanists suggested that they should be cultivated, due to the lack of citrus alternatives. Rising demand The finger lime has been recently popularised as a gourmet bushfood. The globular juice vesicles (also kn ...
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Desert Lime
''Citrus glauca'', commonly known as the desert lime, is a thorny shrub or small tree native to Queensland, New South Wales, and South Australia.Burkill, Isaac Henry. 1932. Gardens' Bulletin, Straits Settlements 5 (Index): 3. ''Citrus glauca''.Citrus pages, Native Australian Citrus, ''Citrus glauca''
The 1889 book ''The Useful Native Plants of Australia'' records common names native kumquat and desert lemon.


Taxonomy

Under the Swingle system, the desert lime was classified in the genus ''Eremocitrus'', a close relative of the genus ''