A necrotic strain of soybean mosaic virus (SMV) is one of the most destructive diseases in some leading soybean cultivars of Korea and its infection sometimes causes complete loss of the crop. The necrotic disease reported first as a strain of soybean mosaic virus in 1976, affects the most promising corrmercial cultivars, 'Kwangkyo' and 'Gangrim', which have been cultivated extensively since released in 1969. Hence, an investigation on the mode of inheritance of resistance gene in soybean cultivars was undertaken to develop resistant lines to the necrotic virus disease by mutation technique, which is being carried out with the cultivar Kwangkyo at present.
Kwon, Shin Han and Oh, Jeung Haing
"Research notes: Inheritance of resistance to necrotic strain of SMV in soybean,"
Soybean Genetics Newsletter: Vol. 6
, Article 33.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol6/iss1/33