Russian botanists (1899-1941).
Georgii Dmitrievich Karpechenko, sometimes Karpetschenko (Russian: Георгий Дмитриевич Карпеченко; 21 April 1899 – 28 July 1941) was a Russian and Soviet biologist. G. D. Karpechenko specialized in plant cytology 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, 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 count