Soybean cyst nematode (Heterodera glycines Ichinohe) is one of the serious soybean [Glycine max (L.) Merr.] pests in major soybean producing countries. The objective of this study was to investigate of Heterodera glycines type using the five SCN infested soybean field soils and was to evaluate resistance to the soybean cyst nematode HG 2.5.7 type on soybean varieties and germplasms. The five SCN contaminated soil samples were collected from the three provinces on November 2011 in Korea, and eggs were cultured on early spring season in 2012. For the second study, a total fifty nine soybean varieties and germplasms were tested by infestation of HG type 2.5.7 in the greenhouse. Soybean cyst nematode HG types were investigated from five locations, HG 2 (race 1) type at Donghae, HG 2.5 (race 1) type at Jeongseon and Hapcheon, HG type 2.5.7 (race 1 or 5) at Yeongwol, and HG 1.2.7 (race 5) type at Haenam locations in present study. No Korean soybean varieties and germplasms were observed with SCN resistant trait to the HG type 2.5.7. Average SCN female index were calculated with 82.7% in 59 plant materials. Our results could be provided useful information to develop a SCN resistant cultivar in Korea.

• Myung-Sik Kim(Department of Functional Crop, National Inst. of Crop Science, Rural Development Administration of Korea)
• Mi-Kyung Sung(Department of Agronomy, Research Institute of Life Science, Gyeongsang National University)
• Min-Whan Kim(Department of Agronomy, Research Institute of Life Science, Gyeongsang National University)
• Hyung-Jin Seo(Department of Agronomy, Research Institute of Life Science, Gyeongsang National University)
• Dong-Geun Kim(Institute for Natural Products Resesrch, Gyeongsangbuk-do Agricultural Research & Extension Service)
• Jong-Il Chung(Department of Agronomy, Research Institute of Life Science, Gyeongsang National University) Corresponding author