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Ernst Münch
Ernst Münch (26 November 1876 – 9 October 1946) was a German plant physiologist who proposed the Pressure Flow Hypothesis in 1930. He studied in Aschaffenburg, and then in Munich with Robert Hartig. He worked in a number of fields including forest pathology, resin production, and fungi. He is best known for the phloem pressure flow hypothesis. Works * ''Untersuchungen über Immunität und Krankheitsempfänglichkeit der Holzpflanzen'', Dissertation, Ludwigsburg 1909 (doctorate thesis) * ''Die Stoffbewegungen in der Pflanze'', Jena 1930 * ''Beiträge zur Forstpflanzenzüchtung. Versuche einer Auslesezüchtung durch Einzelstamm-Absaaten bei Fichte. Weitere Beiträge zur Forstpflanzenzüchtung'' us dem wissenschaftlichen Nachlass herausgegeben von Bruno Huber München 1949 Further reading * E. Höxtermann: ''Ernst Münch''. In: Ilse Jahn (Hrsg.): ''Geschichte der Biologie. Theorien, Methoden, Institutionen, Kurzbiografien''. 3. Auflage, Spektrum Akademischer Verlag, Heid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruchheim
Ruchheim is the far western suburb of Ludwigshafen am Rhein located in the Rhineland-Palatinate state of Germany. In the past Ruchheim was typically a small farming town, now however due to housing estates its population has burgeoned to approximately 6,000 inhabitants. Ruchheim's existence can be traced back to 800 AD when it is mentioned in the Lorsch Codex. It is mentioned in the Descriptio Wormatiensis civitatis, Wormser wall-building ordinance from around 900 as one of the places that shared responsibility for maintaining the city wall of Worms, Germany, Worms.C. Van De Kieft and J. F. Niermeyer, eds. (1967), ''Elenchus fontium historiae urbanae'' (Leiden: E. J. Brill), pp. 43–44. References {{Authority control Neighbourhoods in Germany ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lechbruck
Lechbruck is a municipality in the district of Ostallgäu in Bavaria in Germany. It lies on the west bank of the river Lech Lech may refer to: People * Lech (name), a name of Polish origin * Lech, the legendary founder of Poland * Lech (Bohemian prince) Products and organizations * Lech (beer), Polish beer produced by Kompania Piwowarska, in Poznań * Lech Poznań, .... References Ostallgäu {{Ostallgäu-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botany
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word (''botanē'') meaning " pasture", " herbs" "grass", or " fodder"; is in turn derived from (), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes. Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Von Tubeuf
Carl or Karl von Tubeuf FLS HFRSE (20 January 1862, in Amorbach, Bavaria – 8 February 1941, in Munich, Germany) was a German forestry scientist, mycologist and plant pathologist. He introduced both the term biological control and the use of a biological control to manage a plant disease. He published one of the first books on plant diseases (in German, then translated into English.) In addition to foundational work in plant pathology, he published broadly on other topics including forest botany, dendrology, mycology, and zoology. He discovered new species of gall mites of conifers. Tubeufstrasse in Munich is named after him. Life Karl von Tubeuf was born in Amorbach on 20 January 1862 the son of Simon Anton Freiherr von Tubeuf (1822-1870), and his wife, Luise von Ploennies. He and his brother were educated at the . Tubeuf studied forestry at the Aschaffenburg Forestry Institute in Aschaffenburg (1881-1883), and the University of Munich (1883-1885), completing his diss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Physiology
Plant physiology is a subdiscipline of botany concerned with the functioning, or physiology, of plants. Closely related fields include plant morphology (structure of plants), plant ecology (interactions with the environment), phytochemistry (biochemistry of plants), cell biology, genetics, biophysics and molecular biology. Fundamental processes such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed germination, dormancy and stomata function and transpiration, both parts of plant water relations, are studied by plant physiologists. Aims The field of plant physiology includes the study of all the internal activities of plants—those chemical and physical processes associated with life as they occur in plants. This includes study at many levels of scale of size and time. At the smallest scale are molecular interactions of photosynthesi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pressure Flow Hypothesis
The pressure flow hypothesis, also known as the mass flow hypothesis, is the best-supported theory to explain the movement of sap through the phloem. It was proposed by Ernst Münch, a German plant physiologist in 1930. A high concentration of organic substances, particularly sugar, inside cells of the phloem at a source, such as a leaf, creates a diffusion gradient (osmotic gradient) that draws water into the cells from the adjacent xylem. This creates turgor pressure, also known as hydrostatic pressure, in the phloem. Movement of phloem sap occurs by bulk flow (mass flow) from ''sugar sources'' to ''sugar sinks''. The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward). Because of this multi-directional flow, coupled with the fact that sap cannot move with ease between adjacent sieve-tubes, it is not unusual for sap in adjacent sieve-tubes to be flowing in opposite directions. Sources and sinks A sugar source is any part of the plant that i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aschaffenburg
Aschaffenburg (; South Franconian: ''Aschebersch'') is a town in northwest Bavaria, Germany. The town of Aschaffenburg is not part of the district of Aschaffenburg, but is its administrative seat. Aschaffenburg belonged to the Archbishopric of Mainz for more than 800 years. The town is located at the westernmost border of Lower Franconia and separated from the central and eastern part of the ''Regierungsbezirk'' (administrative region) by the Spessart hills, whereas it opens towards the Rhine-Main plain in the west and north-west. Therefore, the inhabitants speak neither Bavarian nor East Franconian but rather a local version of Rhine Franconian. Geography Location The town is located on both sides of the Main in north-west Bavaria, bordering to Hesse. On a federal scale it is part of central Germany, just southeast of Frankfurt am Main. In the western part of the municipality, the smaller Aschaff flows into the Main. The region is also known as ''Bayerischer Untermain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Munich
Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by population, third-largest city in Germany, after Berlin and Hamburg, and thus the largest which does not constitute its own state, as well as the List of cities in the European Union by population within city limits, 11th-largest city in the European Union. The Munich Metropolitan Region, city's metropolitan region is home to 6 million people. Straddling the banks of the River Isar (a tributary of the Danube) north of the Northern Limestone Alps, Bavarian Alps, Munich is the seat of the Bavarian Regierungsbezirk, administrative region of Upper Bavaria, while being the population density, most densely populated municipality in Germany (4,500 people per km2). Munich is the second-largest city in the Bavarian dialects, Bavarian dialect area, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Hartig
Robert Hartig (born: Heinrich Julius Adolph Robert Hartig, 30 May 1839, in Braunschweig – died 9 October 1901, in Munich) was a German forestry scientist and mycologist. Biography He was educated at the Collegium Carolinum of Braunschweig, and at Berlin. In 1878 he was appointed professor of botany at Munich. Hartig made significant contributions to knowledge of vegetable pathology. Prior to his investigations on the progressive stages of disease in trees, little or nothing had been done in this area, so that Hartig may be considered the founder of arboreal pathology. Hartig worked in Eberswalde (1867–1878) and Munich (1878–1901), mainly in forest pathology. Works * ''Vergleichende Untersuchungen über den Wachsthumsgang und Ertrag der Rothbuche und Eiche im Spessart, der Rothbuche im östlichen Wesergebirge, der Kiefer in Pommern und der Weißtanne im Schwarzwalde'', Stuttgart 1865. * ''Die Rentabilität der Fichtennutzholz- und Buchenbrennholzwirthschaft im Harze und ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Pathology
Forest pathology is the research of both Biotic stress, biotic and Abiotic stress, abiotic maladies affecting the health of a forest ecosystem, primarily Fungal infection in plants, fungal pathogens and their insect vectors. It is a subfield of forestry and plant pathology. Forest pathology is part of the broader approach of forest protection. Insects, diseases and severe weather events damaged about 40 million ha of forests in 2015, mainly in the temperate and boreal domains. Abiotic factors There are a number of Abiotic component, abiotic factors which affect the health of a forest, such as moisture issues like drought, winter-drying, Waterlogging (agriculture), waterlogging resulting from over-abundance or lack of precipitation (meteorology), precipitation such as hail, snow, rain. Wind is also an important abiotic factor as windthrow (the uprooting or breaking of trees due to high winds) causes an obvious and direct loss of stability to a forest or its trees. Often, abio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinrich Rubner
Heinrich may refer to: People * Heinrich (given name), a given name (including a list of people with the name) * Heinrich (surname), a surname (including a list of people with the name) *Hetty (given name), a given name (including a list of people with the name) Places * Heinrich (crater), a lunar crater * Heinrich-Hertz-Turm, a telecommunication tower and landmark of Hamburg, Germany Other uses * Heinrich event, a climatic event during the last ice age * Heinrich (card game), a north German card game * Heinrich (farmer), participant in the German TV show a ''Farmer Wants a Wife'' * Heinrich Greif Prize, an award of the former East German government * Heinrich Heine Prize, the name of two different awards * Heinrich Mann Prize, a literary award given by the Berlin Academy of Art * Heinrich Tessenow Medal, an architecture prize established in 1963 * Heinrich Wieland Prize, an annual award in the fields of chemistry, biochemistry and physiology * Heinrich, known as Haida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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