Georgii Karpechenko
Encyclopedia
Georgii Dmitrievich Karpechenko (1899, Velsk - July 28, 1941) was a Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n and Soviet
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

 biologist. His name has sometimes been transliterated as Karpetschenko.

G. D. Karpechenko worked on cytology
Cell biology
Cell biology is a scientific discipline that studies cells – their physiological properties, their structure, the organelles they contain, interactions with their environment, their life cycle, division and death. This is done both on a microscopic and molecular level...

 and created several hybrids. Among his contributions is his seminal work on allopolyploids, culminating in his creation of a fertile offspring of radishes and cabbages
Raphanobrassica
Brassicoraphanus is the name for all the intergeneric hybrids between the genera Brassica and Raphanus . The name comes from the combination of the genus names...

, the first instance of a new species obtained through polyploid speciation during experimental crossbreeding.

He worked at the Institute of Applied Botany near Leningrad, but collaborated with geneticists in other countries, notably Øjvind Winge
Øjvind Winge
Øjvind Winge was a Danish biologist and a pioneer in yeast genetics.He was born in the city of Aarhus in Jutland, the mainland of Denmark. After completing secondary school he travelled to the University of Copenhagen to study law but found himself more suited to the biological sciences into which...

 in Denmark and Erwin Baur
Erwin Baur
Erwin Baur was a German geneticist and botanist. Baur worked primarily on plant genetics. He was director of the Kaiser Wilhelm Institute for Breeding Research . Baur is considered to be the father of plant virology...

 in Germany. He also travelled abroad to the John Innes Horticultural Institution
John Innes Centre
The John Innes Centre located in Norwich, Norfolk, England is an independent centre for research and training in plant and microbial science...

 in London. He was arrested by the NKVD
NKVD
The People's Commissariat for Internal Affairs was the public and secret police organization of the Soviet Union that directly executed the rule of power of the Soviets, including political repression, during the era of Joseph Stalin....

 under the false grounds of belonging to an alleged "anti-Soviet group" centered around the well known Russian botanist Nikolai Vavilov
Nikolai Vavilov
Nikolai Ivanovich Vavilov was a prominent Russian and Soviet botanist and geneticist best known for having identified the centres of origin of cultivated plants...

who was his colleague at Leningrad. He was sentenced to death and executed on July 28, 1941.
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