국내 콩 재배 품종별 콩씨스트선충 저항성 검정
Resistance screening of soybean cultivars against soybean cyst nematode, Heterodera glycines
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초록
콩 (Glycine max L.)은 우리나라에서 중요한 식량작물 중 하나이며 단백질 공급원이다. 국내 콩 생산에 있어 해충, 식물 병원성 곰팡이, 세균과 식물기생선충 등 다양한 식물 병원체가 큰 피해를 주고 있다. 콩씨스트선충 (Heterodera glycines)은 한국 콩 산업에 연간 409억원 이상의 경제적 피해를 주는 주요 식물기생선충으로, 콩씨스트선충 저항성 콩 품종 재배는 선충 피해를 줄일 수 있는 가장 효과적인 방법이다. 이에 따라 국내에서 개발, 재배되고 있는 콩 32개 품종을 대상으로 콩씨스트선충 저항성 검정을 수행하였다. 그 결과, 국내 재배 품종 중에는 콩씨스트선충에 저항성인 품종은 발견되지 않았으며, ‘대왕’ 품종이 콩씨스트선충에 중도 저항성 (moderate resistance)을 보였고 나머지 31개 품종은 모두 감수성으로 나타났다. 본 연구 결과는 콩씨스트선충이 감염된 밭에서는 ‘대왕’ 품종을 재배하는 것이 콩씨스트선충 피해를 줄일 수 있는 가장 좋은 방법이고, 콩씨스트선충 피해 최소화를 위해 우리나라에서 재배할 수 있는 저항성 콩 품종 개발이 시급하다는 것을 보여준다.
Abstract
Soybean (Glycine max L.) is one of the most important food crops in Korea and a crucial source of protein. However, soybean production is significantly impacted by various plant pathogens, including insect pests, plant-parasitic fungi, bacteria, and nematodes. The soybean cyst nematode (SCN), Heterodera glycines, is a major plant-parasitic nematode that causes an estimated annual loss of US$29 million in Korean soybean industry. Cultivating SCN-resistant soybean cultivars is considered the most effective method for managing this nematode. To identify such cultivars, we conducted resistance screening tests for 32 soybean cultivars. No resistant cultivar was found. Daewang cultivar exhibited moderate resistance to SCN, while the other 31 were susceptible. These findings suggest that Daewang is currently the best choice for fields infested with SCN. There is a critical need for developing SCN-resistant soybean cultivars in Korea.
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