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김주일,권민,심재동,김점순,이영규,지삼녀,이정태,류종수,유동림,이계준,Kim, Ju Il,Kwon, Min,Shim, Jae Dong,Kim, Jeom Soon,Lee, Yeong Gyu,Jee, Sam Nyu,Lee, Jeong Tae,Ryu, Jong Soo,Yoo, Dong Lim,Lee, Gye Jun 한국응용곤충학회 2014 한국응용곤충학회지 Vol.53 No.2
2009~2011년 동안 국내 주요 배추 재배지 5개 지역(평창, 홍천, 봉화, 무주, 제주)에서 살충제에 대한 복숭아혹진딧물의 저항성 발달 정도를 조사하고, 야외 개체군에 적용 가능한 살충제 저항성 마커를 개발하기 위해 본 연구를 수행하였다. 조사된 5개 지역 개체군 모두 여러 살충제 종류에 대하여 다양한 저항성을 보였다. 다양한 저항성을 보인 5개 지역 야외 개체군으로부터 여라 살충제에 대하여 복합적으로 저항성을 보이는 복합저항성 계통(MR)을 선발하였고, 이 MR과 모든 지역 채집 개체군에 대해 등전점전기영동과 정량염기서열분석(quantitative sequencing, QS)을 통하여 에스터레이즈 과발현과 살충제 작용점 내 돌연변이를 확인하였다. MR을 포함한 모든 야외 개체군에서 에스터레이즈의 과발현과 아세틸콜린에스터레이즈 1 유전자(ace1)의 StoF 돌연변이를 확인할 수 있었다. 넉다운 저항성 돌연변이로 잘 알려진 파라 타입 나트륨 채널 유전자(para)의 LtoF 돌연변이는 모든 지역 채집 개체군은 물론 비펜스린에 대해 3,461배 저항성을 보이는 MR에서도 발견되지 않았다. 그 외에 MtoL 돌연변이를 발견하였는데, 생물검정 결과 저항성 수준과 돌연변이 발생 빈도가 일치하였다. 따라서 생물검정 대신, 이러한 분자 마커를 활용 한다면 더 효율적으로 살충제 저항성 평가가 가능할 것이다. 이러한 분자 마커들(ace1의 StoF, para의 MtoL)은 정량염기서열분석, PCR amplification of specific alleles (PASA) 등의 진단 방법에 쉽게 응용이 가능 하고, 이러한 방법은 야외 복숭아혹진딧물 저항성 관리에 적용이 가능 할 것이다. The resistance levels of the green peach aphid, Myzus persicae (Sulzer), against 10 insecticides was checked and selected the applicable insecticide resistance markers. We conducted our study in 5 cabbage cultivation regions (Pyeongchang, Hongcheon, Bongwha, Muju, and Jeju) of Korea, over 3 successive years (2009-2011). We selected a multi-resistant (MR) strain from among the 5 field-collected populations. We analyzed esterase over-expression and mutation(s) in the target sites, by using native isoelectric focusing (IEF) and quantitative sequencing (QS). We detected esterase over-expression and StoF mutation in the acetylcholinesterase 1 gene (ace1) in all of the field-collected populations, including the MR strain. We did not detect the LtoF mutation, which is a well-known knockdown resistance (kdr) mutation in the para-type sodium channel gene (para), in the MR strain; however, the value of the MR strain for bifenthrin was 3,461-fold higher than that of the susceptible strain. Our results indicate that insecticide resistance is more effectively evaluated using molecular markers than by conducting a bioassay. The molecular markers StoF in ace1 and MtoL in para can easily be applied in diagnostic methods such as QS or PCR amplification of specific alleles (PASA). These methods may be extended to management of M. persicae resistance in the field.
토양수분, 칼슘부족 및 주야간 습도에 따른 고랭지배추 팁번 발생
김기덕(Ki-Deog Kim),서종택(Jong-Taek Suh),김창석(Chang-Seok Kim),지삼녀(Sam-Nyu Jee) 한국원예학회 2021 원예과학기술지 Vol.39 No.6
Tipburn occurs occasionally in Kimchi cabbage, and lowers quality and yield. This study was carried out to understand the causes and reduce the occurrence of tipburn. Daily calcium uptake increased rapidly at the heading time when Kimchi cabbage biomass increased. Tipburn occurred when Kimchi cabbage was hydroponically cultured for over 24 hours in calcium-deficient nutrient solution, and occurred on leaves ranging from the 20th to 50th leaf from the outer leaf. Calcium content was lower in inner leaves than in outer leaves, and was lower at the leaf margins than in the middle part of the leaf. Tipburn was more sensitive to soil drying than to saturated soil. In the 70/100% day/night relative humidity (RH) treatment, tipburn did not occur at all, and in the 50/100% RH treatment, it appeared mildly at the initial stage and recovered. In the 40/80% RH treatment, in which the RH was kept low during the day, tipburn occurred severely, and in the 20/40% RH treatment, in which the RH was kept very low during the day and night, the leaves were shriveled, but tipburn did not occur. It seems that the occurrence of calcium deficiency can be reduced by increasing the humidity at night while managing sufficient soil moisture in highland Kimchi cabbage.
김창석(Chang-Seok Kim),김기덕(Ki-Deog Kim),지삼녀(Sam-Nyu Jee),서종택(Jong-Taek Suh),오영주(Young-Ju Oh) 한국잡초학회·한국잔디학회 2020 Weed & Turfgrass Science Vol.9 No.2
본 연구는 고랭지 배추, 무밭에 발생하는 잡초의 분포와 우점도를 알아보기 위해 수행되었다. 잡초 분포 조사 결과는 26과 104분류군이 발생하였고 배추밭은 79분류군, 무밭은 86분류군이 분포하였다. 생활형별로는 배추, 무밭 모두 하계 일년생이 각각 41종(51.9%), 51종(59.3%)으로 가장 많이 발생하였다. 고랭지 밭에는 털별꽃아재비가 우점하였고 흰명아주, 산여뀌, 봄여뀌 등이 출현하였다. 고랭지 밭의 경사도에 따른 우점종은 0-15°는 흰명아주, 15-40°는 털별꽃아재비로 조사되었다. 고랭지 밭의 해발고도에 따른 우점종은 500-899 m는 흰명아주, 900-1299 m는 털별꽃아재비가 출현하는 것으로 조사되었다. 고랭지 밭의 잡초분포는 해발고도, 경사도가 낮을수록 흰명아주가 우점하고 해발고도와 경사도가 높을수록 털별꽃아재비가 우점하는 것으로 조사되었다. This study was conducted to investigate the distribution and dominance of weeds in highland Kimchi cabbage and radish fields. As a result of the weed distribution survey, 26 and 104 classification groups occurred, and the 79 and 86 classification groups were distributed in Kimchi cabbage and radish field, respectively. Among the life forms, summer annual occurred most frequently in Kimchi cabbage and radish fields. In the highland field, Galinsoga cilata was dominant and Chenopodium album, Persicaria nepalensis and P. vulgaris appeared. The dominant species according to the slope of the highland field were found to be Chenopodium album in 0-15°and G. cilata in 15-40°. The dominant species according to the altitude of the highland field was found to be Chenopodium album in 500-899 m, and G. cilata in 900-1,299 m. The weed distribution in the highland fields was found to be dominated by Chenopodium album as the altitude and slope were lower and G. cilata as the altitude and slope were higher.
배추 수액 흐름 및 배추 재배 토양 근접 위치 온습도의 일변화 특성
김기덕(Ki-Deog Kim),서종택(Jong-Tack Suh),김창석(Chang-Seok Kim),지삼녀(Sam-Nyu Jee),홍순춘(Soon-Choon Hong),김수정(Su-Jeong Kim),남정환(Jung Hwan Nam),이종남(Jong-Nam Lee),손황배(Hwang-Bae Sohn) 한국원예학회 2022 원예과학기술지 Vol.40 No.2
In this study, sap flow of Kimchi cabbage was affected the most by solar radiation, but it was not completely consistent. In addition, it was judged to be somewhat affected by other weather environmental factors such as temperature, soil temperature, wind speed, relative humidity, and vapor pressure deficit. Sap flow of Kimchi cabbage was affected by changes in soil temperature in the root stalk and solar radiation in the leaves. The effect of soil moisture on sap flow was not sensitive in the range of available soil moisture conditions, while it showed different patterns according to the measurement location, leaf aging, and extreme weather conditions. The ratio of evapotranspiration calculated from sap flow and from the positive relationship between them was presented as an irrigation signal. When the soil moisture was sufficient, the temperature and humidity measured at the top 1 cm of the ground surface adjacent to the cabbage followed the general pattern of temperature and humidity change in the air, and the opposite result was obtained when the soil moisture was insufficient. Therefore, it was determined that the abnormal change signal of the temperature and humidity near the surface of the Kimchi cabbage cultivated soil can be used as an indicator for determining the soil moisture state.
다공질 세라믹 추를 이용한 중량 토양수분함량 측정 센서의 성능 검증
김기덕(Ki-Deog Kim),서종택(Jong-Taek Suh),유동림(Dong-Lim Yoo),김창석(Chang-Seok Kim),지삼녀(Sam-Nyu Jee),홍순춘(Soon-Choon Hong),김성겸(Sung Kyeom Kim) (사)한국생물환경조절학회 2021 생물환경조절학회지 Vol.30 No.2
토양 콘의 무게를 기반으로 한 간단한 토양 수분 측정 방법이 개발되었다. 토양 콘은 토양으로 채워진 원추형 다공성 세라믹 컵이다. 세 가지 토양 샘플에서 코어 방법과 FDR(Frequency Domain reflectometry) 방법에 의한 토양 수분함량은 직선 회귀식의 결정계수가 각각 0.92-0.98 및 0.97-0.99였으며, 선형 관계였다. 토양 세라믹 콘 내부 토양의 체적 수분 함량과 콘 내부 토양 수분 중량 및 FDR의 센서 값의 회귀결과 결정계수가 각각 0.96 및 0.97였다. 토양 콘 중량과 FDR센서 값(r² = 0.99, p < 0.001) 사이는 높은 유의한 상관관계가 있었다. 따라서 토양 콘의 무게를 측정하여 토양 수분 함량을 측정할 수 있었다. A simple soil moisture measurement method based on the weight of soil cone was developed. Soil cone is a conical porous ceramic cup filled with soil. In the three soil samples (fine sandy soil, silt loam, and sandy loam), the soil moisture content by core method and FDR (Frequency domain reflectometry) method showed a linear relationship with the regression coefficients of 0.92 - 0.98 and 0.97 - 0.99, respectively. The volumetric moisture content of the soil inside the soil cone to the soil cone water weight and the FDR sensor value showed a relationship with regression coefficient of 0.96 and 0.97, respectively. The relationship between the soil cone weight and the FDR sensor value (r² = 0.99, p < 0.001) was highly significant. Therefore, it was possible to measure soil moisture content by weighing of soil cone.