A new soybean cultivar ‘Wonhyun’, was developed by mutation breeding technique using a 250 Gy gamma ray at Korea Atomic Energy Research Institute (KAERI) in 2010. ‘Wonhyun’ has black seed coat and much better agronomic performance than original variety ‘Paldal’. Their total yield (177.1kg/10a) is much higher than that of ‘Paldal’ (126.9 kg/10a). Also, 100 seed weight of Wonhyun was 27g compared to ‘Paldal’ (13.7g). Contents of 4 essential amino acids such as aspartic acid, glutamic acid, lysine, arginine and unsaturated fatty acid including linoleic and linolenic acid have much higher than ‘Paldal’. This cultivar is good for cooking with rice as improved functional ingredient soybean.

• 김진백(한국원자력연구원 첨단방사선연구소) | Jin-Baek Kim
• 이경준(한국원자력연구원 첨단방사선연구소, 농촌진흥청 농업유전자원센터) | Kyung Jun Lee
• 김동섭(한국원자력연구원 첨단방사선연구소) | Dong Sub Kim
• 김상훈(한국원자력연구원 첨단방사선연구소) | Sang Hoon Kim
• 송희섭(한국원자력연구원 첨단방사선연구소) | Hi Sup Song
• 강시용(한국원자력연구원 첨단방사선연구소) | Si-Yong Kang Corresponding author