In 1974, ten white-flowered soybean mutants and other different forms were obtained from approximately 6,894 M2 plants of purple-flowered soybean cultivar 'Wakashirna' irradiated with 15 krad of gamma rays (Singburaudom, 1977). Seeds of each plant, especially of white-flowered mutants, were in-creased. Later, experimental lines were established and used in mutation ex-periments (Vipasrinimit, 1979; Noree, 1981).
Smutkupt, Sumin; Wongpiyasatid, Arunee; and Lamseejan, Siranut
"Research Notes : Thailand : Observation on back mutation of white-flowered 'Wakashima' mutants,"
Soybean Genetics Newsletter: Vol. 12
, Article 17.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol12/iss1/17