Abstract
A new black seed coat soybean variety, ‘Socheong 2’ was developed at the National Institute of Crop Science (NICS)in 2006. ‘Socheong 2’ was selected from the cross between ‘Milyang78’ and ‘Peking’. The preliminary, advanced and regionalyield trials for evaluation and selection of this variety were carried out from 2005 to 2009. It has determinate growth habit, whiteflower, brown pubescence, black pod color, black seed coat, green cotyledon, elongated flattened seed shape, oval leaf shape andsmall seed size (12.2 grams per 100 seeds). And it has the same maturity as the check cultivar Cheongjakong. ‘Socheong 2’has better seed quality than that of the check cultivar in isoflavone contents (2,031 ㎍/g), and it has good adaptability for‘Cheongkugjiang’ and soybean malt. It also has been identified to have resistance to soybean mosaic virus symptom (SMV)which was the troublesome soybean diseases. The average yield of ‘Socheong 2’ was 2.00 ton per hectare in the regional yieldtrials carried out in five locations of Korea among seven from 2007 to 2009, which was 7 percent higher than that of the checkcultivar ‘Cheongjakong’.
