The first mutations of soybeans in the USSR were received by Leschenko A. in the 30's. In the late 50's, through direct selection of mutations, the first variety called 'Universal 1' was received in the USSR. The second strain-- 'Wonder of Georgia' --was received through crossing of induced mutants of soybeans.
Sichkar, V. I.
"Research notes: The frequency of chlorophyll mutations in soybeans,"
Soybean Genetics Newsletter: Vol. 6
, Article 51.
Available at: https://lib.dr.iastate.edu/soybeangenetics/vol6/iss1/51