|
Turkish Oak
''Quercus cerris'', the Turkey oak or Austrian oak, is an oak native to south-eastern Europe and Asia Minor. It is the type species of ''Quercus'' sect. ''Cerris'', a section of the genus characterised by shoot buds surrounded by soft bristles, bristle-tipped leaf lobes, and acorns that usually mature in 18 months. Description ''Quercus cerris'' is a large deciduous tree growing to tall with a trunk up to in diameter. The bark is dark gray and deeply furrowed. On mature trees, the bark fissures are often streaked orange near the base of the trunk. The glossy leaves are long and 3–5 cm wide, with 6–12 triangular lobes on each side; the regularity of the lobing varies greatly, with some trees having very regular lobes, others much less regular. The flowers are wind-pollinated catkins, maturing about 18 months after pollination; the fruit is a large acorn, long and 2 cm broad, bicoloured with an orange basal half grading to a green-brown tip; the acorn cup is 2& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern Taxonomy (biology), taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was the son of a curate and was born in Råshult, in the countryside of Småland, southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defence (United Kingdom)
The Ministry of Defence (MOD or MoD) is a Departments of the Government of the United Kingdom, ministerial department of the Government of the United Kingdom. It is responsible for implementing the defence policy set by the government and serves as the headquarters of the British Armed Forces. The MOD states that its principal objectives are to defend the United Kingdom of Great Britain and Northern Ireland and its interests and to strengthen international peace and stability. The MOD also manages day-to-day running of the armed forces, contingency planning and defence procurement. The expenditure, administration and policy of the MOD are scrutinised by the Defence Select Committee, except for Defence Intelligence which instead falls under the Intelligence and Security Committee of Parliament. History During the 1920s and 1930s, British civil servants and politicians, looking back at the performance of the state during World War I, concluded that there was a need for greater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exeter
Exeter ( ) is a City status in the United Kingdom, cathedral city and the county town of Devon in South West England. It is situated on the River Exe, approximately northeast of Plymouth and southwest of Bristol. In Roman Britain, Exeter was established as the base of Legio II Augusta under the personal command of Vespasian. Exeter became a religious centre in the Middle Ages. Exeter Cathedral, founded in the mid 11th century, became Anglicanism, Anglican in the 16th-century English Reformation. Exeter became an affluent centre for the wool trade, although by the First World War the city was in decline. After the Second World War, much of the city centre was rebuilt and is now a centre for education, business and tourism in Devon and Cornwall. It is home to two of the constituent campuses of the University of Exeter: Streatham Campus, Streatham and St Luke's Campus, St Luke's. The administrative area of Exeter has the status of a non-metropolitan district under the administ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Lucombe
William Lucombe (before 1720 – after 1785) was a horticulturalist and nurseryman, who discovered and gave his name to the natural hybrid Lucombe Oak (''Quercus × hispanica'' 'Lucombeana'), a semi-deciduous oak tree. The Lucombe nursery William Lucombe began his horticultural career as Head Gardener in the service of merchant Thomas Ball at Mamhead House, Mamhead Park in Devon circa 1720. It was while working at Mamhead that he founded his nursery, the first commercial plant nursery in South West England,Harvey, J. (1975). ''Early Nurserymen''. Phillimore, Chichester, UK. marketing many of the plants collected by Ball during the latter's commercial travels abroad, most famously the Quercus ilex, Holm Oak.Stroud, D. (1950). ''Capability Brown''. Republished 1984. Faber & Faber, London. Lucombe bred his eponymous oak at the nursery he founded in 1720 in St Thomas, Exeter. In 1794, his son John Lucombe took possession of the nursery on Alphington Road, later known as the Exeter Nur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fulham
Fulham () is an area of the London Borough of Hammersmith and Fulham in West London, England, southwest of Charing Cross. It lies in a loop on the north bank of the River Thames, bordering Hammersmith, Kensington and Chelsea, London, Chelsea, with which it shares the area known as West Brompton. Over the Thames, Fulham faces Wandsworth, Putney, the London Wetland Centre in Barnes, London, Barnes in the London Borough of Richmond upon Thames. First recorded by name in 691, it was an extensive Anglo-Saxon settlement of Britain, Anglo-Saxon estate, the Fulham Palace, Manor of Fulham, and then a parish. Its domain stretched from modern-day Chiswick in the west to Chelsea, London, Chelsea in the southeast; and from Harlesden in the northwest to Kensal Green in the northeast bordered by the littoral of Counter's Creek and the Manor of Kensington. It originally included today's Hammersmith. Between 1900 and 1965, it was demarcated as the Metropolitan Borough of Fulham, before its me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slovakia
Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's mostly mountainous territory spans about , hosting a population exceeding 5.4 million. The capital and largest city is Bratislava, while the second largest city is Košice. The Slavs arrived in the territory of the present-day Slovakia in the 5th and 6th centuries. From the late 6th century, parts of modern Slovakia were incorporated into the Pannonian Avars, Avar Khaghanate. In the 7th century, the Slavs played a significant role in the creation of Samo's Empire. When the Avar Khaghanate dissolved in the 9th century, the Slavs established the Principality of Nitra before it was annexed by the Great Moravia, Principality of Moravia, which later became Great Moravia. When Great Moravia fell in the 10th century, the territory was integrated i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Vigour
Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents. The heterotic offspring often has traits that are more than the simple addition of the parents' traits, and can be explained by Mendelian or non-Mendelian inheritance. Typical heterotic/hybrid traits of interest in agriculture are higher yield, quicker maturity, stability, drought tolerance etc. Definitions In proposing the term heterosis to replace the older term heterozygosis, G.H. Shull aimed to avoid limiting the term to the effects that can be explained by heterozygosity in Mendelian inheritance. Heterosis is often discussed as the opposite of inbreeding depression, although differences in these two concepts can be seen in evolutionary considerations such as the role of genetic variation or the effects of genetic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-Baptiste Lamarck
Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck (1 August 1744 – 18 December 1829), often known simply as Lamarck (; ), was a French naturalist, biologist, academic, and soldier. He was an early proponent of the idea that biological evolution occurred and proceeded in accordance with Naturalism (philosophy), natural laws. Lamarck fought in the Seven Years' War against Prussia, and was awarded a commission for bravery on the battlefield. Posted to Monaco, Lamarck became interested in natural history and resolved to study medicine.#Packard, Packard (1901), p. 15. He retired from the army after being injured in 1766, and returned to his medical studies. Lamarck developed a particular interest in botany, and later, after he published the three-volume work ''Flore françoise'' (1778), he gained membership of the French Academy of Sciences in 1779. Lamarck became involved in the Jardin des Plantes and was appointed to the Chair of Botany in 1788. When the French Nationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus × Crenata
''Quercus'' × ''crenata'' is a tree in the family Fagaceae. Its taxonomic status is uncertain, as sources vary how they treat it. , Plants of the World Online treated ''Quercus'' × ''crenata'' as a synonym of ''Quercus'' × ''hispanica'', and hence as a hybrid between the European trees Turkey oak (''Quercus cerris'') and cork oak (''Quercus suber''). A 2007 molecular phylogenetic study supported the hybrid origin of the taxon, but used the specific epithet ''crenata'' rather than ''hispanica''. , the World Flora Online treated the taxon as a separate species, ''Quercus crenata'', a view also taken in a 2018 study, where it is considered to be endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ... to the Italian peninsula. References {{DEFAULTSORT:Quercus crenata crenat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridization, which include genetic and morph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cork Oak
''Quercus suber'', commonly called the cork oak, is a medium-sized, evergreen oak tree in the section Quercus sect. Cerris, ''Quercus'' sect. ''Cerris''. It is the primary source of cork (material), cork for wine bottle stoppers and other uses, such as cork flooring and as the cores of cricket balls. It is native to southwest Europe and northwest Africa. In the Mediterranean basin the tree is an ancient species with fossil remnants dating back to the Tertiary period. It can survive for as long as two centuries. Typically, once it reaches 25 years old, its thick bark can be harvested for cork every 9 to 12 years without causing harm to the tree. It endures drought and makes little demand on the soil quality and is regarded as a defence against desertification. Cork oak woodlands are home to a multitude of animal and plant species. Since cork for sealing bottles is increasingly being displaced by other materials, these forests are at risk as part of the cultural landscape and as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variegation
'' Cryptocarya williwilliana'' showing leaf venation and variegated leaves Variegation is the appearance of differently coloured zones in the foliage, flowers, and sometimes the stems and fruit of plants, granting a speckled, striped, or patchy appearance. The colors of the patches themselves vary from a slightly lighter shade of the natural coloration to yellow, to white, or other colors entirely such as red and pink. This is caused by varying levels and types of pigment, such as chlorophyll in leaves. Variegation can be caused by genetic mutations affecting pigment production, or by viral infections such as those resulting from mosaic viruses. Many plants are also naturally variegated, such as '' Goeppertia insignis''. Most of these are herbaceous or climbing plants, and are most often species native to tropical rainforests. Many species which are normally non-variegated are known to display variegation. Their appearance is desirable to enthusiasts, and many such plants ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
