Ivan Nikolayevich Goroshankin

Ivan Nikolayevich Goroshankin

Iw a n Nikol a jewitsch Gorosch a nkin ( Russian Иван Николаевич Горожанкин , scientific transliteration Ivan Nikolaevič Gorožankin ; * 16 August ^July / 28 August  1848 ^greg. In Voronezh ; † 7 November ^jul. / 20 November  1904 ^{greg .} in Moscow ) was a Russian botanist who mainly dealt with green algae and gymnosperms . Its official botanical author's abbreviation is “ Gorozh. "

Life

Ivan Gorozhankin studied at the natural science department of the physical-mathematical faculty at the Moscow State University . After graduating in 1871, he worked at Moscow University, where he held a chair in the Department of Botany from 1874. In 1875 he became a lecturer and completed his habilitation six years later. Goroshankin is the founder of the Moscow Morphological Botanical School ( Московская морфолого-ботаническая школа ), from which numerous later university professors emerged. He was also Vice President of the Moscow Society for Natural Scientists ( Московское общество испытателей природы ).

After his death, Gorozhankin was buried in the Pyatnitskoye cemetery in Moscow.

research

Gorozhankin is considered the founder of comparative plant embryology within Russian botany . In his studies he mainly explored the green algae and gymnosperms (naked-seed plants). His studies mainly dealt with comparative morphology . Goroschakin found similarities between the zoospores of the 8- to 16-cell spherical green alga Pandorina and the male gametes of the 16- to 32-cell green alga Eudorina elegans . He was also the first to describe the sexual reproduction of the unicellular green alga Chlamydomonas braunii . In one of his last works, "On the research of the morphology and systematics of chlamydomons" (1891) ( "К исследованию морфологии и систематики хламидомонад" ), the last chapter of which was published posthumously in 1905 after his death " ) sexual evolution of reproduction. He described the gradual course of the evolution from isogamy to anisogamy and oogamy and showed that these three gamete types can also occur within one genus .

Already in his dissertation in 1880 "On the corpuscles and the sexual process in gymnospermen plants" ( О корпускулах и половом процессе у голосеменных растений ) the gymnosperozhankin dealt with the propagation of the gymnospermen. Among other things, he examined the structure of the archegonium and, in 1883, was the first to describe the process of fertilization in gymnosperms on the dwarf pine ( Pinus pumila ) . He also described the similarities between the fertilization of the archegonium in lower and higher plants.

Individual evidence

1. ↑ ^{a b c d} Article Iwan Nikolajewitsch Goroschankin in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian) http: //vorlage_gse.test/1%3D011963~2a%3D~2b%3DIwan%20Nikolajewitsch%20Goroschankin(after KI Meier: Goroschankin and his role in the development of Russian botany (1848-1904). Moscow, 1966)
2. ↑ Iwan Gorozhankin on the International Plant Names Index website.Retrieved October 23, 2010
3. ↑ Article on Gorozhankin in the Biographical Dictionary.Retrieved October 23, 2010
4. ↑ ^{a b c} Article about Goroschankin in Brockhaus / Efron.Retrieved October 23, 2010
5. ↑ Article about the Pyatnitskoye cemetery on gup-portal.ru ( Memento of the original from November 25, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved October 23, 2010