A New Soybean Cultivar, ＂Sunam＂ Suitable for Sprout with Early Maturity and Small Seed

Abstract

A new soybean variety, Sunam was developed from the cross between Kosuzu and Bukwangkong by soybean breeding laboratory of the National Honam Agricultural Experiment Station (NHAES) in 2002. The preliminary, advanced, and regional yield trials for evaluation and selection were carried out from 1998 to 2002. Sunam had a determinate growth habit, purple flower, grey pubescence, yellow seed coat, brown hilum, and ovoid leaf shape. The maturity date of Sunam was 15 days earlier than the check variety, Pungsan. It has good seed quality for soybean sprout, 100-seed weight being 9.3g and resistance to lodging. It has also been identified to have resistance to soybean mosaic virus. Average yield of Sunam in the regional yield trials for double cropping carried out for three years (2000-2002) was 2.22 ton per hectare.