Camerarius , Rudolph Jacob
- (1665–1721) German botanistBorn the son of a professor of medicine at Tübingen (now in Germany), Camerarius was himself educated there and received his doctorate in 1687. He joined the staff at Tübingen and following his father's death in 1695 was appointed professor of medicine and director of the botanic gardens, posts he occupied until his death from TB in 1721.In 1694 in De sexu plantarum (On the Sex of Plants) Camerarius produced clear experimental evidence for the sexuality of plants first proposed by John Ray and Nehemiah Grew. By isolating pistillate (female) dioecious plants from staminate (male) plants (dioecious referring to plant species where the male and female flowers are borne on separate plants), he was able to show that although the pistillate plants produced fruit, they lacked seeds. With monoecious plants (those that bear separate unisexual male and female flowers on the same plant, e.g. maize) he found that removing the male inflorescence also resulted in sterile fruit.In his description of plant anatomy Camerarius identified the stamens as the male organ and the style and stigma as the female part. He also described the role of pollination.
Scientists. Academic. 2011.
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Camerarius, Rudolph Jacob — ▪ German botanist born Feb. 17, 1665, Tübingen, Ger. died Sept. 11, 1721, Tübingen botanist who demonstrated the existence of sexes in plants. Professor of natural philosophy at the University of Tübingen, Camerarius was one of the… … Universalium
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CAMERARIUS (R. J.) — CAMERARIUS RUDOLPH JACOB (1665 1721) D’une famille d’intellectuels, Rudolf Camerarius est le fils d’Elias Rudolph, docteur en philosophie et en médecine, qui fut professeur, puis recteur de l’université de Tübingen et membre de la célèbre… … Encyclopédie Universelle
Rudolph — Rudolph, Paul * * * (as used in expressions) Camerarius, Rudolph (Jacob) Rudolph Camerer Gerald Rudolph Ford, Jr. Giuliani, Rudolph W(illiam) Marcus, Rudolph A. Quinn, Anthony (Rudolph Oaxaca) Rudolph, Wilma (Glodean) Wurlitzer, (Franz) Rudolph … Enciclopedia Universal
Jacob — o Ya akov, en hebreo יַעֲקֹב sostenido por el talón o en árabe يعقوب Yaʿqūb, conocido despues como Israel hebreo יִשְׂרָאֵל Principe de Dios , árabe اسرائيل Isrāʾīl) es uno de los patriarcas de la Biblia. Su historia es contada en el libro de… … Enciclopedia Universal
Rudolph — /rooh dolf/, n. 1. Paul (Marvin), 1918 97, U.S. architect. 2. Wilma (Glodean) /gloh dee euhn/, born 1940, U.S. track and field athlete. 3. a male given name, form of Rolf. * * * (as used in expressions) Camerarius Rudolph Jacob Rudolph Camerer… … Universalium
Jacob — /jay keuhb/ for 1, 3; Fr. /zhann kawb / for 2, n. 1. the second son of Isaac, the twin brother of Esau, and father of the 12 patriarchs. Gen. 25:24 34. 2. François /frddahonn swann /, born 1920, French geneticist: Nobel prize for medicine 1965. 3 … Universalium
heredity — /heuh red i tee/, n., pl. heredities. Biol. 1. the transmission of genetic characters from parents to offspring: it is dependent upon the segregation and recombination of genes during meiosis and fertilization and results in the genesis of a new… … Universalium
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