콩모자이크 바이러스(SMV) 抵抗性 育種에 關한 硏究 Ⅰ. 壞疸病 抵抗性 檢定方法 確立에 關한 硏究

Studies on breeding of soybeans(glycine max(L). merrill) for the resistance to soybean mosaic virus strains Ⅰ. Screening for the resistance to SMV-N

One of the severest endemic soybean diseases especially to soybean varieties resistant to mosaic disease in Korea is the necrotic soybean disease caused by the necrotic strain of soybean mosaic virus(SMV-N). To establish a reliable screening method for the disease, a series of experiments were carried out at the Crop Experiment Station, Rural Development Administration, Suwon, Korea for five years from 1979 to 1984. Soybean cv. Wayne appeared to be a good source of the strain SMV-N propagation since Wayne produced severe mosaic symptoms by infection with SMV-N. Only 11 soybean varieties which were all susceptible to SMV out of 48 tested were found to carry the seed-borne SMV-N. The range for the seed-born SMV rate of 48 tested soybean varieties was 0-64%. For practical screening of breeding line in the field, planting soybean varieties producing mosaic symptoms and transmissible of SMV-N around soybean lines to be tested was found to be very effective.