• 농약과학회지
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• 제16권4호
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• pp.302-307
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• 2012

친환경 유기농자재 rotenone의 홍고추 중 잔류특성을 조사하고 가공계수를 산출하기 위하여 시험포장에 시험농자재를 7일 간격으로 2회 살포한 후 경시적으로 채취하여 잔류량을 분석하였다. 홍고추와 건고추 중 rotenone의 정량한계는 각각 0.03과 0.07 mg/kg이었으며, 분석법의 회수율은 각각 89.52-97.86%와 85.76-91.61%이었다. 잔류농약 분석 결과 홍고추 중 시험농자재의 잔류량은 0.03-0.39 mg/kg이었으며, 건고추의 경우 0.07-0.75 mg/kg으로 잔류량은 경시적으로 감소하였다. 건조에 의한 홍고추 중 rotenone의 가공계수는 2.03-3.13으로써 건조에 따라 잔류농도가 2-3배 증가하였다. 그러나 건조 전 홍고추 중 rotenone의 감소계수는 0.38-0.59로서 건조 전 홍고추 중 rotenone의 일부는 건조 과정 중 소실된 것으로 나타났다.

• 농업과학연구
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• 제46권4호
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• pp.769-779
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• 2019

Chilli peppers are predominantly cultivated in open field systems under abiotic and biotic stress conditions. Abiotic and biotic factors have a considerable effect on plant performance, fruit quantity, and quality. Chilli peppers grow well in a tropical climate due to their adaptation to warm and humid regions with temperatures ranging from 18 to 30℃. Nowadays, chilli peppers are cultivated all around the world under different climatic conditions, and their production is gradually expanding. Expected climate changes will likely cause huge and complex ecological consequences; high temperature, heavy rainfall, and drought have adverse effects on the vegetative and generative development of all agricultural crops including chilli peppers. To gain better insight into the effect of climate change, the growth, photosynthetic traits, morphological and physiological characteristics, yield, and fruit parameters of chilli peppers need to be studied under simulated climate change conditions. Moreover, it is important to develop alternative agrotechnologies to maintain the sustainability of pepper production. There are many conceivable ideas and concepts to sustain crop production under the extreme conditions of future climate change scenarios. Therefore, this review provides an overview of the adverse impacts of climate change and discusses how to find the best solutions to obtain a stable chilli pepper yield.

• 한국유기농업학회지
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• 제25권3호
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• pp.555-567
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• 2017

This study suggests the yield forecast model for chilli pepper using artificial neural network. For this, we select the most suitable network models for chilli pepper's yield and compare the predictive power with adaptive expectation model and panel model. The results show that the predictive power of artificial neural network with 5 weather input variables (temperature, precipitation, temperature range, humidity, sunshine amount) is higher than the alternative models. Implications for forecasting of yields are suggested at the end of this study.

• 농업생명과학연구
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• 제44권1호
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• pp.1-8
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• 2010

This study was conducted to investigate effect of low temperature and ripeness stages on fruit quality of chilli pepper (cv. Nockgwang) during storage at 5, 7, and $10^{\circ}C$. Fruits at three ripeness stages were selected based on uniform fruit size and three maturities on peel color: S1 (fully developed fruit just before the onset of ripening), S2 (fruits in the onset of color change), and S3 (fruits in completely red in color). Lower temperature attributed to increase fruit weight loss (WL) and WL was higher in S2 than the other ripeness stages. The highest respiration rate and ethylene production was found at S2 fruit while those of fruit in green and red showed similar and remained lower level during storage. Electrolyte leakage (EL) was higher as storage temperature decreased. After 28 d storage, EL rates of fruits at $5^{\circ}C$ were 43, 36, and 17% in S1, S2, and S3 while those at $10^{\circ}C$ were 17, 19, and 14%, respectively. These results show that chilli pepper fruits are tended to lose more water at lower temperature partially associated with increased EL. Thus, threshold storage temperature must be considered for avoiding chilling during storage and for extending the storage life of fresh pepper fruits.

• 농약과학회지
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• 제17권4호
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• pp.244-248
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• 2013

홍고추와 고춧가루 중 친환경 유기농자재 matrine의 잔류특성을 구명하고 가공계수를 산출하기 위하여 시험포장에 matrine의 시판제품(유효성분 2%)을 1,000배 희석하여 조제한 살포액을 7일 간격으로 2회 살포 한 후 최종 약제 살포 당일부터 7일차까지 경시적으로 홍고추를 채취하였다. 채취한 홍고추는 $60^{\circ}C$의 열풍건조기를 이용하여 수분함량이 14% 이하가 되도록 건조한 후 마쇄하여 고춧가루를 조제하였다. 시험작물 중 matrine의 회수율은 106.6-119.1%이었으며, 저장 안정성 시험의 회수율은 106.6-113.1%이었다. 1회 처리구 홍고추와 고춧가루 중 matrine의 잔류량은 각각 < 0.01-0.11과 0.03-0.25 mg/kg이었으며, 2회 처리구의 경우 0.02-0.12와 0.04-0.40 mg/kg이었다. 또한 고춧가루 중 matrine의 가공계수는 1.50-3.33으로 건조 후 잔류량은 증가하였다.

• The Plant Pathology Journal
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• 제23권2호
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• pp.57-61
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• 2007

Whitefly-transmitted geminiviruses (WTGs) are economically important pathogens causing serious damage on tomato and chilli pepper in Indonesia. Geminiviruses are readily transmitted by its insect vector, sweetpotato whitefly (Bemisia tabaci). However, greenhouse whitefly (Trialeurodes vaporariorum), another species of whitefly, is commonly found together with B. tabaci in the field. Incidence of yellow leaf curl disease in tomato and chilli pepper is probably correlated with the population of whitefly complex. It is becoming important to find the role of T. vaporariorum in the spread of the disease. Therefore, research is conducted to study the characteristic relationship between tomato leaf curl begomovirus (ToLCV) and two species of whitefly. The two species of whitefly, B. tabaci and T. vaporariorum, was capable to transmit ToLCV although it was evidenced that B. tabaci is more effective as insect vector of ToLCV in tomato and chilli pepper. A single B. tabaci was able to transmit ToLCV to tomato with a minimum acquisition and inoculation access period of 10 h. Transmission of ToLCV by T. vaporariorum required at least 10 insects per plant with a minimum acquisition and inoculation access period of 24 h. The transmission efficiency will increase with longer acquisition and inoculation access period of the insect and the higher number of insect per plant.

• 농약과학회지
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• 제16권3호
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• pp.236-241
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• 2012

시설재배 풋고추 및 착색단고추의 재배과정 중 살포되는 chlorpyrifos의 잔류특성을 밝히고자 재배시기 및 약제살포 방법별 잔류량을 조사, 평가하였다. 고추의 재배시기별 열매 중 chlorpyrifos 잔류는 하절기(6~7월)에 비해 동절기(2~3월)에 1.5~2.7배 높게 검출되었다. 동절기 재배중인 풋고추와 착색단고추에 7일 간격 3회 약제 살포 후 1~10일 동안의 잔류량을 비교하였다. 고추 중 잔류량은 1일차 2.070에서 10일차 $0.929mg\;kg^{-1}$로 감소하였으며, 착색 단고추는 1일차 0.302에서 10일차 $0.291mg\;kg^{-1}$으로 감소하여 두 농산물간의 농약잔류량은 6.9~3.2배 차이를 보였다. 착색단고추에 약제를 3일과 7일 간격으로 3회 살포 후 1~10일 동안의 농약잔류량은 각각 0.498~0.291, $0.302{\sim}0.267mg\;kg^{-1}$ 범위였다. 착색단고추에 살포농도를 표준량과 배량으로 처리하였을 때 열매 중 농약의 잔류농도는 배량 처리시 2.5배 정도 높았으며, 살포 물량을 달리 했을 때의 영향은 거의 없었다.

• 식물병연구
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• 제21권2호
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• pp.99-102
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• 2015

오이모자이크바이러스(CMV)는 고추에 심한 피해를 주는 바이러스이다. 2013년 고추 품종 청양의 선단부위에 괴저증상이 나타난 식물체로부터 CMV를 순수 분리하였고 이 분리주를 CMV-GTN으로 명명하였다. CMV-GTN과 기존에 특성이 잘 알려진 CMV-Ca-P1을 대상으로 외피단백질의 아미노산 서열과 여러 기주식물에서 생물적 반응을 비교하였다. CMV-Ca-P1의 외피단백질 아미노산은 217개로 구성되어 있었으나, CMV-GTN은 아미노산 서열 57번째에 발린이 추가된 218개로 구성되어 있었다. CMV-GTN과 GeneBank에 등록된 다양한 CMV 분리주들의 외피단백질유전자 유사성은 96-99%였다. 생물 검정에서 토마토와 고추에서 병원성이 강하게 발현되는 CMV-GTN을 고추 품종에 대한 저항성 스크린을 위하여 선발하였다. 고추 시판 품종 135종에 대하여 CMV-GTN으로 검정하였고 CMV-Ca-P1과 저항성 반응을 비교하였다. 그 결과 CMV-GTN에 대하여 저항성 반응을 표현한 품종은 프레미엄, 중도 저항성 품종은 핫스타, 카이저, 굿쵸이스였다. 한편 CMV-Ca-P1에 대한 저항성 품종은 베로따와 카이저였다.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.113.2-114
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• 2003

Five pepper-infecting potyviruses, Pepper mottle virus (PepMoV), Chilli veinal mottle virus (CVMV), Pepper veinal mottle virus (PVMV), Pepper severe mosaic virus (PSMV) and Tobacco each virus (TEV), are known filamentous virus and can be infected pepper crops systemically. To understand pathology and genome information of the five viruses on pepper plants, host reactions and sequences were compared to the 5 viruses. Five potyviruses were inoculated onto some typical cultivars of hot peppers and compared their symptoms, and virus accumulations. A set of degenerate primers for potyviruses were applied to 5 viruses and RT-PCR was performed. RT-PCR products containing partial nuclear inclusion b and coat protein (CP) genes were cloned. Then, oligo dT primer and species-specific primer were redesigned to amplify the C-terminal part of CP and 3' noncoding regions of each viruses. Sequences of the viruses were analyzed and compared to serological relationships among the viruses. The data can be useful for screening of potyviruses in pepper plants and pathogen-derived transgenic pepper plant development.

• The Plant Pathology Journal
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• 제25권4호
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• pp.328-332
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• 2009

Diseases caused by Pepper yellow leaf curl virus infection is considered to be emerging plant diseases in Indonesia in the last five years. One key factor for disease management is the availability of accurate detection of the virus in plants. Polyclonal antibody for Pepper yellow leaf curl Indonesia virus-Bogor (PYLCIV-Bgr) was produced for detection of the virus using I-ELISA and DIBA methods. The antibody was able to detect PYLCIV-Bgr from infected plants up to dilution 1/16,384 and cross reaction was not observed with Cucumber mosaic virus (CMV), Tobacco mosaic virus (TMV), and Chilli veinal mottle virus (ChiVMV). Positive reaction was readily detected in membrane containing Begomovirus samples from Yogyakarta (Kaliurang and Kulonprogo) and West Java (Bogor and Segunung). Infection of PYLCIV-Bgr in chillipepper, tomato, and Ageratum conyzoides was also confirmed using polyclonal antibody for PYLCIV-Bgr in DIBA. Polyclonal antibody for PYLCIV-Bgr is suggested to be included in disease management approach due to its good detection level.