담배가루이 B와 Q 계통의 국내 발생 상황

이민호,강석영,이선영,이흥수,최준열,이관석,김황용,이시우,김선곤,엄기백,Lee, Min-Ho,Kang, Seok-Young,Lee, Sun-Young,Lee, Heung-Su,Choi, June-Yeol,Lee, Gwan-Seok,Kim, Whang-Yong,Lee, Si-Woo,Kim, Seon-Gon,Uhm, Ki-Baik 한국응용곤충학회 2005 한국응용곤충학회지 Vol.44 No.3

The occurrence of tobacco whiteflies, Bemisia tabaci, in greenhouses was monitored in Korea in 2005. Bemisia tabaci occurred in the rose, sweet pepper, tomato, and cucumber greenhouses of Chungbuk, Chungnam, Gyongnam, and Jeonnam Provinces, but not in Jeonbuk and Gyongbuk Provinces. The biotypes and genetic differentiation of the whiteflies collected in each regions were analyzed by mitochondrial 16S DNA sequences. The 16S DNA sequences of Jincheon (Chungbuk Province) samples were similar to DNA data reported from Japan and Israel which were known as the B biotype. However, the DNA sequences of the Buyeo (Chungnam), Geoje (Gyongnam) and Boseong (Jeonnam) collections, which were 100% homologous showed over 99% similarity to the DNA of Q biotype from Spain and Egyrt. Here we report the first founding of the Q biotype in Korea. It is assumed that, unlike the B biotype reported from Jincheon since 1998, the Q biotype might have been introduced recently from the certain foreign region/country to the greenhouses in those provinces. 2005년 5월 충청이남 지역의 온실에서 담배가루이의 발생 상황을 조사한 결과 충남 북, 전남 및 경남에서 착색단고추, 토마토, 오이, 장미 등의 시설 재배지에 담배가루이가 발생한 것을 확인하였으나 전북과 경북에서는 발견할 수 없었다. 각 지역별로 발생한 담배가루이의 계통(biotype)과 근연관계를 조사할 목적으로 충을 채집하여 16S DNA 염기서열 분석을 수행하였다. 그 결과 진천에서 채집한 담배가루이의 16S DNA 염기서열은 일본 및 이스라엘에서 보고된 B 계통의 DNA와 상동성이 높았고 충남 부여, 경남 거제 및 전남 보성 채집 충은 상호간에 동일한 염기서열을 보여 주었으며 스페인과 이집트의 Q계통의 DNA와 99% 이상의 높은 상동성을 보였다. 그러므로 본 논문은 담배가루이 Q 계통이 국내에 유입되었음을 알리는 최초의 보고이다. 이는 1998년부터 진천에서 발생한 담배가루이 B 계통과는 별도로 담배가루이 Q 계통이 최근에 국외의 동일한 지역내지는 국가로부터 이들 지역의 시설재배지에 유입된 것으로 추정된다.

저항성 벼 품종에 대한 비래 벼멸구 개체군의 가해특성

최낙중 ( Nak Jung Choi ),최준열 ( June Yeol Choi ),신동범 ( Dong Bum Shin ),김선림 ( Sun Lim Kim ) 전북대학교 농업과학기술연구소 2015 농업생명과학연구 Vol.46 No.2

This study lays the foundation for future work on rice breeding for BPH resistance and we observed biological reaction such as fecundity, life cycle, growth period and survival rates to investigate correlation between adaptation of BPH populations and BPH-resistant rice varieties according to duration. By comparison with the number of nymphs hatched among cultivars, the fecundity of 1980s-BPH was markedly less than other BPH groups in BPH-resistant rice cultivar. As time goes by, showed a tendency to increase the more fecundity. Looking at life and growth period, 1980s-BPH populations inoculated with two resistant varieties rice(samgangbyeo and M63) didn’t adapt to rice so that life and nymphs period is a very short, but 2005-BPH, 2007-BPH, 2012-BPH populations showed a normal growth period. In the survey survival rates of BPH populations, survival rates of 1980s-BPH was the lowest but flying recently populations tended to the higher generally. When the population of 1980s-BPH compared with population of 2013-BPH, it was investigated that the survival rates has increased up to minimum 6%(Mudgo) and maximum 70%(Samgangbyeo).

배추에 대한 배추흰나비(Artogeia rapae L.)의 요방제수준

권민,김주일,윤영남,최준열,Kwon, Min,Kim, Ju-Il,Yoon, Young-Nam,Choi, June-Yeol 한국응용곤충학회 2008 한국응용곤충학회지 Vol.47 No.4

배추에서 배추흰나비의 요방제수준을 설정하기 위해 온실 및 포장에서 실험을 수행하였다. 예비실험으로서 배추흰나비 2령충을 다섯 밀도 수준 접종하고 피해정도를 조사하였다. 배추 포기당 유충 1마리 접종에 의한 잎피해면적은 정식3주차 배추에서 섭식 1주일후 657.7 $mm^2$, 정식 6주차 배추에서 섭식 2주일후 2495.8 $mm^2$로 나타났다. 포장실험에서는 배추흰나비 유충 1-7마리를 시험구(배추 20주)에 접종하였다. 3주간 섭식후, 접종 유충 밀도(X)에 따른 수량감소율(Y)은 다음 두가지 식, 즉 정식 3주차 배추는 Y=1.7640X-0.3049 ($R^2$=0.9901), 정식 6주차 배추는 Y=1.0305X-0.2976 ($R^2$=0.9398)로 각각 추정되었다. 접종한 유충밀도와 배추 피해지수간의 상관성을 바탕으로, 수량 감소율(gain threshold, 수익역치) 5%로 전제한 배추흰나비 2령 유충의 요방제수준은 정식 3주차 배추에서 20주당 3.0마리, 정식 6주차 배추에서 20주당 5.1마리로 추정되었다. This study was conducted to estimate the control thresholds (CTs) of imported cabbage worm, Artogeia rapae L., injuring Chinese cabbage. The second instar larvae of A. rapae were inoculated with five density levels on each Chinese cabbages transplanted three weeks earlier under greenhouse condition, and checked injury rates after allowing their feeding for one week and two weeks, respectively. The average leaf area consumed by single larvae was 657.7 $mm^2$ in plots inoculated at three weeks after transplanting (WAT) and 2495.8 $mm^2$ in plots at 6-WAT, respectively. In the field experiment, different numbers of A. rapae ranged from one to seven larvae were inoculated on 20 plants. The percent yield reduction (Y) of Chinese cabbage infested by different densities of A. rapae (X) for a three-week period was estimated by the following equation; (1) Y=1.764X-0.3049 ($R^2$=0.9901) in plots inoculated at 3-WAT; and (2) Y=1.0305X-0.2976 ($R^2$=0.9398) in plots inoculated at 6-WAT. Based on the relationships between the densities of A. rapae larvae and the yield index of Chinese cabbage, the number of second instar larvae which caused 5% loss of yield (gain threshold proposed by Japan), was estimated as 3.0 per 20 plants for the 3-WAT and 5.1 for the 6-WAT.

거대억새 재배단지 조성에 따른 생물상 모니터링

강구,홍성구,지광재,최준열,이효혜미,김한중,박성직,Kang, Ku,Hong, Seong-Gu,Ji, Kwang-Jae,Choi, June-Yeol,Lee, Hyo-HyeMi,Kim, Han-Joong,Park, Seong-Jik 한국농공학회 2014 한국농공학회논문집 Vol.56 No.1

The cultivation of biomass crops is now global demand for decreasing emissions of carbon dioxide ($CO_2$) from fossil fuel. Miscanthus species have been studied as a suitable crop for biomass production, due to its characteristics of fast growth and high biomass. In Korea, Miscanthus species have gained wide attention as an option for biomass production alternative to fossil fuels, recently. New strain of giant Miscanthus has been developed and two large trial sites for the giant Miscanthus production were built in the lower reaches of the Geum River. To evaluate the ecological influence of the giant Miscanthus as an bioenergy crop for the future, we investigated the impact of the construction of the giant Miscanthus production fields on the biota and also compared it with biota in paddy fields near the study sites. The biota including plants, amphibians, reptiles, mammals, avifauna, insects, and bugs was investigated. The plant diversity of the giant Miscanthus production fields was poorer than the paddy fields because the high height of the giant Miscanthus might hinder the growth of other plants. However, the giant Miscanthus production fields serves habitat to animals, leading to rich diversity of animals including avifauna, insects, and bugs. The rich diversity of the animals in the giant Miscanthus production fields coincides with the fact that the giant Miscanthus was grown without any pesticide, herbicide, and fertilizer. This study showed that the giant Miscanthus can influence on biota and further long term study is needed to elucidate the interaction between the diversity of biota and the giant Miscanthus.

작물별 이화명나방의 발생양상 변동과 생물적 특성 연구

최낙중 ( Nak Jung Choi ),최준열 ( June-yeol Choi ),이봉춘 ( Bong-choon Lee ),김상민 ( Sang-min Kim ),나지은 ( Ji-eun Ra ),백채훈 ( Chai-hun Baik ),이종진 ( Jong Jin Lee ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.1

We analyzed the variation in occurrence time and intensity of attacks by the rice stem borer (Chilo suppressalis Walker) on several crops. This study aimed to understand how C. suppressalis damages crops and to utilize this basic data for the establishment of environment-friendly control methods like pheromone traps. This study surveyed the changes in occurrence patterns of C. suppressalis, biological characteristics of overwintering larvae, and the efficacy of different types of pheromone traps the years. We found similar occurrence patterns of C. suppressalis in different crops. In addition, occurrence time of the first generation was advanced. Overwintering larvae showed no difference in pupal period and weight compared to the non-overwintering ones. However, the larval period was reduced to 19.1 days in Miscanthus field, in contrast to that in the paddy fields. It was confirmed that larvae of C. suppressalis generally prefer the lower part of the stems of Miscanthus. Efficiency of the emergence trap was confirmed to be greater than that of the delta trap for capturing C. suppressalis adults. However, it is necessary to adjust the control period because of the advancement in occurring time of C. suppressalis in recent years. The larvae of C. suppressalis experience favorable environmental conditions for overwintering in Miscanthus fields. The major Miscanthus fields are generally located in the areas protected for sources of drinking water, owing to which spraying of chemical pesticides is very limited. The results of this study provide important inputs for the development of environment-friendly control methods.

염화나트륨 처리 및 재배방법이 새싹밀의 항산화 성분 및 활성에 미치는 영향

양지영,이한결,서우덕,이미자,송승엽,최준열,김현영,Yang, Ji Yeong,Lee, HanGyeol,Seo, Woo Duck,Lee, Mi Ja,Song, Seung-Yeob,Choi, June-Yeol,Kim, Hyun Young 한국식품영양학회 2022 韓國食品營養學會誌 Vol.35 No.3

Sprouts have various health benefits. Specifically, wheat sprouts are rich in bioactive compounds, such as vitamins and polyphenols. Elicitation induces and enhances secondary metabolite biosynthesis in plants. Therefore, in this study, we investigated the effects of sodium chloride (NaCl) treatments on the growth profile, free amino acid content, and antioxidant activity of germinated wheat (Triticum aestivum). Wheat seeds were germinated at 20℃ for 10 days and treated with 0, 2, 4, 7.5, and 10 mM of NaCl 10 days before harvesting. Treating the soil bed with NaCl increased the nutritional component amounts, such as free amino acids and γ-aminobutyric acid. The chlorophyll a and b concentrations were the highest in the hydroponic system treated with 7.5 mM NaCl. In addition, the polyphenol and flavonoid contents of sprouts treated with 2 and 7.5 mM NaCl were 1.94 and 1.34 times higher than that of the control sprouts (0 mM NaCl, water only), respectively. These results suggest that 2 to 4 mM NaCl treatments improve the nutritional and food quality of wheat sprouts more than water only.

귀리 첨가 호상 요구르트의 저장 중 항산화 활성 및 품질 특성

이미자,김현영,양지영,송승엽,서우덕,최준열,Lee, Mi Ja,Kim, Hyun Young,Yang, Ji Yeong,Song, Seung-Yeob,Seo, Woo Duck,Choi, June-Yeol 한국식품영양학회 2022 韓國食品營養學會誌 Vol.35 No.5

Recently, consumers' awareness of the importance of the intestinal action of lactic acid bacteria and intestinal microbes is increasing, as well as interest in yogurt. In this study, yogurt was prepared with three mixed strains (lactic acid bacteria combination, Lactobacillus acidophilus, Lactobacillus delbrueckii subsp., and Bulgaricus, Streptococcus thermophilussei, 1:1:1) by adding oats flour, and the quality characteristics of yogurt were investigated, while stored at a storage temperature of 4℃ for 12 days. According to the storage period, the control as wel as the oat yogurt showed slight decrease in pH, and no significant change in acidity. Sugar content slightly increased. and brightness decreased, in the control and the oat yogurt. Visible cell numbers increased during storage, and decreased on the 12th day. Viscosity in the oat yogurt was 7,580 cP, which was approximately eight times higher than that of the control group, and decreased gradually according to the storage period. Antioxidant activity (DPPH) was approximately two times higher in the oat-added yogurt, and slightly increased with the storage period, decreased on the 12th day of storage, and β-glucan was detected only in oat-added yogurt.

대관령 지역 주요 하천 및 도암호의 수질 특성

박경훈(Kyeong-Hun Park),김병석(Byeong-Seok Kim),윤혜정(Hye-Jeong Yun),류경열(Kyoung-Yul Ryu),윤종철(Jeong-Chul Yun),최준열(June-Yeol Choi),김기덕(Ki-Deog Kim),진용익(Yong-Ik Jin) 한국토양비료학회 2012 한국토양비료학회지 Vol.45 No.6

대관령 고랭지 농업지대 인근 주요 하천과 도암호의 수질의 이화학성 및 식물성플라크톤의 발생 양상을 조사하여 남한강 상류 수계의 전반적인 수질특성을 파악하고자 하였다. 도암호의 화학적 산소 요구량 (COD)은 6.1 mg L^-1 이고, 총 인 (Total phosphorous)의 함량은 0.26 으로 호소수 생활환경 기준 Ⅵ등급 보다 높았다. 부유물질은 평균 9.77 NTU로 호수수 생활기준 보다 높았다. 식물플랑크톤의 농도는 7월부터 9월까지 2.0×10³ cells mL^-1 이상으로 확인되었는데 이는 여름철 고온과 강우에 의해 영양물질의 대량 유입으로 인해 남조류가 발생하였기 때문인 것으로 생각된다. 온타리오 퇴적물 기준과 비교해 보면, 도암호의 총 질소 및 총 인의 농도는 LEL과 SEL의 중간 정도 값을 보여 오염이 상당부분 진행되어 체계적인 관리로 오염원을 저감 및 차단할 수 있는 방안이 마련되어져야 할 것으로 생각된다. This study was surveyed that water physiochemical characteristics and phytoplankton incidence of main stream and Lake Doam near to Daegwallyeong agricultural area. Based on above results, it was conducted to get information overall water characteristics in south Han upstream river. COD value of Lake Doam was 6.1 mg L^-1 and T-P (Total phosphorous) from there was 0.26 mg L^-1 which was higher than the value of grade Ⅵ based on lake water living environment standard. Suspended solid was an average of 9.77 NTU which was higher than value of lake living standard. Concentration of phytoplankton was over 2.0×10³ Cell mL^-1 from July to September. It was considered that cyanobacteria were occurred due to massive influx of nutrient material by high temperature and rainfall during this season. Compare to Ontario"s sediment quality guidelines, T-N and T-P was middle value between LEL and SEL in Lake Doam. This value means that contamination in water is serious. Therefore, it is considered that systematic management was needed to reduce and block contamination source.