A New Black Seed Coat Soybean Cultivar, 'Geomjeong 5' with Short Stem Height, Lodging Tolerance and High Yield.

A new black seed coat soybean cultivar, 'Geomjeong 5' was developed at the National Institute of Crop Science (NICS) in 2009. The goal of breeding was to develop a cultivar with high yield, lodging tolerance, and resistance to disease such as soybean mosaic virus (SMV), and bacterial pustule. 'Geomjeong 5' was selected from the cross between 'Shinpaldal 2', showing yellow seed coat, lodging tolerance, and high yield, and 'Geomgjeong 2', showing yellow cotyledon, large seed size, and black seed coat. The preliminary, advanced and regional yield trials for this cultivar were carried out from 2005 to 2009. It has determinate growth habit, purple flower, brown pubescence, brown pod color, black seed coat, yellow cotyledon, spherical seed shape, oval leaf shape and middle seed size (23.2 grams per 100 seeds). It was 6 days later in maturity than the check cultivar 'Ilpumgeomjeongkong'. It has good physical property for black tofu. The average yield of 'Geomjeong 5' was 2.46 ton per hectare in the regional yield trials carried out in seven locations of Korea from 2007 to 2009. [ABSTRACT FROM AUTHOR]