A New Soybean Cultivar, “Sokang” for Sprout with Small Seed Size, Disease Resistance and High Yielding

A new sprout-soybean cultivar, “Sokang” was developed from the cross between Namhaekong and Camp by the soybean breeding laboratory of the Honam Agricultural Research Institute in 2004. The preliminary, advanced, and regional yield trials for evaluation and selection were carried out from 2000 to 2004. Sokang had a determinate growth habit with white flower, grayish brown pubescence, yellow hilum, and lanceolate leaflet shape. The maturity date of Sokang is three days earlier than that of the check variety, Pungsan. It has a good seed quality for soybean-sprout. The soybean-sprouts grown from the variety has high isoflavone (4.5 mg/g) and amino acid (295 mg/g) contents. It has about 9.5 g per 100-seed weight and resistance to lodging. It also showed resistance to soybean mosaic and necrotic symptom of Soybean mosaic virus which is a severe soybean disease. The average yield of Sokang was 2.44 ton per hectare in the regional yield trials for double cropping carried out for three years from 2002 to 2004, which was 2 percent higher than the check variety, Pungsan.