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Vasconcellea Chilensis
''Vasconcellea chilensis'' is a species of flowering plant in the family Caricaceae. It is endemic to Chile. The plant has a chromosome count of 2n = 18. It was previously placed in the genus ''Carica''. Description Monoecious or dioic shrub, deciduous in summer, reaching a size of 1–3 m in height; It has a thick and succulent trunk, the exfoliating bark at the base of adult trees. Leaves very variable in shape, ovate, deltoid, some heart-shaped at the base and divided into 5 angular, membranous lobes; with 3–4 cm petiole. Flowers 5–6 mm long, red on the outside and green on the inside, male flowers are born in small clusters; solitary female flowers. The fruit is ovoid, brownish-green with oval seeds wrapped in mucilage Mucilage is a thick, gluey substance produced by nearly all plants and some microorganisms. These microorganisms include protists which use it for their locomotion. The direction of their movement is always opposite to that of the secretion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caricaceae
The Caricaceae are a family of flowering plants in the order Brassicales, found primarily in tropical regions of Central and South America and Africa. They are usually short-lived evergreen pachycaul shrubs or small to medium-sized trees growing to 5–10 m tall. One species, ''Vasconcellea horovitziana'' is a liana and the three species of the genus '' Jarilla'' are herbs. Some species, such as the papaya, bear edible fruit and produce papain. Based on molecular analyses, this family has been proposed to have originated in Africa in the early Cenozoic era, ~66 million years ago (mya). The dispersal from Africa to Central America occurred ~35 mya, possibly via ocean currents from the Congo delta. From Central America, the family reached South America 19-27 mya. The family comprises six genera and about 34-35 species: *''Carica'' – one species, ''Carica papaya'' ( papaya), Americas *''Cylicomorpha'' – two species, Africa *''Horovitzia'' – one species, Mexico *''Jacar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chile
Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east and the Pacific Ocean to the west. Chile covers an area of , with a population of 17.5 million as of 2017. It shares land borders with Peru to the north, Bolivia to the north-east, Argentina to the east, and the Drake Passage in the far south. Chile also controls the Pacific islands of Juan Fernández, Isla Salas y Gómez, Desventuradas, and Easter Island in Oceania. It also claims about of Antarctica under the Chilean Antarctic Territory. The country's capital and largest city is Santiago, and its national language is Spanish. Spain conquered and colonized the region in the mid-16th century, replacing Inca rule, but failing to conquer the independent Mapuche who inhabited what is now south-central Chile. In 1818, after declaring in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromosome
A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones. These proteins, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation. Chromosomes are normally visible under a light microscope only during the metaphase of cell division (where all chromosomes are aligned in the center of the cell in their condensed form). Before this happens, each chromosome is duplicated ( S phase), and both copies are joined by a centromere, resulting either in an X-shaped structure (pictured above), if the centromere is located equatorially, or a two-arm structure, if the centromere is located distally. The joined copies are now called si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carica
''Carica'' is a genus of flowering plants in the family Caricaceae including the papaya (''C. papaya'' syn. ''C. peltata'', ''C. posoposa''), a widely cultivated fruit tree native to the American tropics. The genus was formerly treated as including about 20-25 species of short-lived evergreen pachycaul shrubs or small trees growing to 5–10 m tall, native to tropical Central and South America, but recent genetic evidence has resulted in all of these species other than ''C. papaya'' being reclassified into three other genera. Taxonomy The genus name comes from the botanical name of the fig, ''Ficus carica'', because of the species' leaves or fruits resemble that of it. The ''carica'' epithet comes from Caria in southwest Anatolia (Asia Minor), Turkey, where the fig was mistakenly thought to have come from. Species According to World Flora Online, the genus ''Carica'' lists 21 species. Most of the other species have since been transferred to the genus ''Vasconcellea'', with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoecious
Monoecy (; adj. monoecious ) is a sexual system in seed plants where separate male and female cones or flowers are present on the same plant. It is a monomorphic sexual system alongside gynomonoecy, andromonoecy and trimonoecy. Monoecy is connected to anemophily. It can prevent self-pollination in an individual flower but cannot prevent self-pollination between male and female flowers on the same plant. Monoecy in angiosperms has been of interest for evolutionary biologists since Charles Darwin. Terminology Monoecious comes from the Greek words for one house. History The term monoecy was first introduced in 1735 by Carl Linnaeus. Darwin noted that the flowers of monoecious species sometimes showed traces of the opposite sex function. Monoecious hemp was first reported in 1929. Occurrence Monoecy is most common in temperate climates and is often associated with inefficient pollinators or wind-pollinated plants. It may be beneficial to reducing pollen-stigma interferenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Succulent Plant
In botany, succulent plants, also known as succulents, are plants with parts that are thickened, fleshy, and engorged, usually to retain water in arid climates or soil conditions. The word ''succulent'' comes from the Latin word ''sucus'', meaning "juice" or "sap". Succulent plants may store water in various structures, such as leaf, leaves and Plant stem, stems. The water content of some succulent organs can get up to 90–95%, such as ''Glottiphyllum semicyllindricum'' and ''Mesembryanthemum barkleyii''. Some definitions also include roots, thus geophytes that survive unfavorable periods by dying back to underground storage organs may be regarded as succulents. The habitats of these water-preserving plants are often in areas with high temperatures and low rainfall, such as deserts, but succulents may be found even in Alpine climate, alpine ecosystems growing in rocky soil. Succulents are characterized by their ability to thrive on limited water sources, such as mist and dew, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petiole (botany)
In botany, the petiole () is the stalk that attaches the leaf blade to the stem, and is able to twist the leaf to face the sun. This gives a characteristic foliage arrangement to the plant. Outgrowths appearing on each side of the petiole in some species are called stipules. Leaves with a petiole are said to be petiolate, while leaves lacking a petiole are called sessile or apetiolate. Description The petiole is a stalk that attaches a leaf to the plant stem. In petiolate leaves, the leaf stalk may be long, as in the leaves of celery and rhubarb, or short. When completely absent, the blade attaches directly to the stem and is said to be sessile. Subpetiolate leaves have an extremely short petiole, and may appear sessile. The broomrape family Orobanchaceae is an example of a family in which the leaves are always sessile. In some other plant groups, such as the speedwell genus '' Veronica'', petiolate and sessile leaves may occur in different species. In the grasses (Poaceae), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mucilage
Mucilage is a thick, gluey substance produced by nearly all plants and some microorganisms. These microorganisms include protists which use it for their locomotion. The direction of their movement is always opposite to that of the secretion of mucilage. It is a polar glycoprotein and an exopolysaccharide. Mucilage in plants plays a role in the storage of water and food, seed germination, and thickening membranes. Cacti (and other succulents) and flax seeds are especially rich sources of mucilage. Occurrence Exopolysaccharides are the most stabilising factor for microaggregates and are widely distributed in soils. Therefore, exopolysaccharide-producing "soil algae" play a vital role in the ecology of the world's soils. The substance covers the outside of, for example, unicellular or filamentous green algae and cyanobacteria. Amongst the green algae especially, the group Volvocales are known to produce exopolysaccharides at a certain point in their life cycle. It occurs in alm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vasconcellea
''Vasconcellea'' is a genus with 20 or 26 species of flowering plants in the family Caricaceae. Most were formerly treated in the genus ''Carica'', but have been split out on genetic evidence. The genus name has also been spelled "''Vasconcella''". They are evergreen pachycaul shrubs or small trees growing to 5 m tall, native to tropical South America. Many have edible fruit similar to papaya, and some are widely cultivated in South America. ;Species: *''Vasconcellea badilloi'' *'' Vasconcellea candicans'' *''Vasconcellea carvalhoae'' *''Vasconcellea cauliflora'' *''Vasconcellea chachapoyensis'' *''Vasconcellea chilensis'' *''Vasconcellea crassipetala'' *''Vasconcellea glandulosa'' *'' Vasconcellea goudotiana'' *''Vasconcellea horovitziana'' *''Vasconcellea longiflora'' *''Vasconcellea microcarpa'' *''Vasconcellea monoica'' *''Vasconcellea omnilingua'' *''Vasconcellea palandensis'' *''Vasconcellea parviflora'' *''Vasconcellea pentalobis'' *''Vasconcellea peruviensis'' *''Vasconce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
