Hans Winkler
Hans Karl Albert Winkler (23 April 1877 – 22 November 1945) was a German botanist. He was Professor of Botany at the University of Hamburg, and a director of that university's Institute of Botany. Winkler coined the term 'heteroploidy' in 1916. He is remembered for coining the term 'genome' in 1920, by making a portmanteau of the words gene and chromosome. He wrote: 
This may be translated as: "I propose the expression "Genom" for the haploid chromosome set, which, together with the pertinent protoplasm, specifies the material foundations of the species ..."
Hitoshi Kihara
At that time, it was mandatory for a Japanese academic to work overseas for a number of years in order to gain admission as members of research faculties. While working in Germany, Hitoshi Kihara studied the genetics of "Rumex acetosella" and other Sorrel species, and discovered the sex chromosomes. In 1936, he noticed that in wheat seven chromosomes become a pair that performs the lowest gene function, and thus nemed it genome. The concept of genome extended all over the world and formed the basis for development of biology and genetic engineering.