• 한국작물학회지
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• 제48권5호
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• pp.413-418
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• 2003

Genetic diversity and soybean sprout-related traits were evaluated in a total of 72 soybean accessions (60 Glycine max, 7 Glycine soja, and 5 Glycine gracilis). 100-seed weight (SW) was greatly varied and ranged from 3.2g to 32.3g in 72 soybean accessions. Positive correlation was observed between GR and hypocotyl length (HL), whereas negative correlation was observed between SW and hypocotyl diameter (HD). Re-evaluation by discarding two soybean genotypes characterized with low GR indicated that much higher correlation of sprout yield (SY) with HD and SW. Based on the principal component analysis (PCA) for sprout-related traits, 57 accessions were classified. Soybean genotypes with better traits for sprout, such as small size of seeds and high SY, were characterized with high PCA 1 and PCA 2 values. The seed size in second is small but showed low GR and SY, whereas the third has large seed, high GR and more than 400% SY. In genetic similarity analysis using 60 SSR marker genotyping, 72 accessions were classified into three major and several minor groups. Nine of twelve accessions that were identified as the representatives of soybean for sprout based on PCA were in a group by the SSR marker analysis, indicating the SSR marker selection of parental genotypes for soybean sprout improvement program.

• 농약과학회지
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• 제10권4호
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• pp.289-295
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• 2006

살충제 imidacloprid(1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine)의 붕어(Carassius auratus L.) 체내 행적과 장기에 미치는 영향을 구명하기 위하여 imidacloprid를 환경추정농도인 0.064 mg $kg^{-1}$로 처리한 시험수에 붕어를 4일간 경시적으로 노출시켰다. 수중의 imidacloprid는 붕어체내에 흡수되어 노출 2일차에 최대 흡수량을 나타내었으며, 다른 장기에 비해 쓸개에서 농도가 가장 높았다. 붕어 사육수에서 미확인 주대사산물과 imidacloprid urea가 대사산물로 검출되었다. 또한 붕어체내에 흡수된 imidacloprid의 주요 배설경로는 담도이었으며, 장기에 대한 조직학적 이상증상은 발견되지 않았다.

• 한국농공학회논문집
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• 제60권5호
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• pp.69-80
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• 2018

This study investigated climate change influences over crop water requirement (CWR) and irrigation water requirement (IWR) of the wheat-rice cropping system of Upper Chenab Canal (UCC) command in Punjab Province, Pakistan. PRECIS simulated delta-change climate projections under the A1B scenario were used to project future climate during two-time slices: 2030s (2021-2050) and 2060s (2051-2080) against baseline climatology (1980-2010). CROPWAT model was used to simulate future CWRs and IWRs of the crops. Projections suggested that future climate of the study area would be much hotter than the baseline period with minor rainfall increments. The probable temperature rise increased CWRs and IWRs for both the crops. Wheat CWR was more sensitive to climate-induced temperature variations than rice. However, projected winter/wheat seasonal rainfall increments were satisfactorily higher to compensate for the elevated wheat CWRs; but predicted increments in summer/rice seasonal rainfalls were not enough to complement change rate of the rice CWRs. Thus, predicted wheat IWRs displayed a marginal and rice IWRs displayed a substantial rise. This suggested that future wheat production might withstand the climatic influences by end of the 2030s, but would not sustain the 2060s climatic conditions; whereas, the rice might not be able to bear the future climate-change impacts even by end of the 2030s. In conclusion, the temperature during the winter season and rainfall during the summer season were important climate variables controlling water requirements and crop production in the study area.

• 인간식물환경학회지
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• 제23권4호
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• pp.399-410
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• 2020

The United Nations project the world population to reach 10 billion by the year 2057. To increase the food of the ever-increasing world population, agrochemicals are indispensable tools to the boon in agriculture production. These agrochemicals are a serious threat to the health of humans, plants, and animals. Agrochemicals are ultimately reached to the main reservoir/sink such as soil and contaminating the groundwater, disturb the soil health and in turn a serious threat to biogeochemical cycling and the entire biosphere. Among agrochemicals, quinalphosis one of the most repeatedly and widely used insecticides in the control of a wide range of pests that attack various crops. Quinalphos is shown to be primarily toxic in organisms by acetylcholinesterase enzyme action. Hydrolysis of quinalphos produces amajor metabolite 2-hydroxyquinoxaline (2-HQ), which has shown secondary toxicity in organisms. 2-HQ is reported to be mutagenic, carcinogenic, growth inhibition and induce oxidative stress in organisms. Quinoline is a heterocyclic compound and structural resemblance of 2-HQ with minor changes, but its degradation studies are enormous compared to the 2-HQ compound. Biotic factors in fate and behavior of 2-HQ in the environment are least studied. 2-HQ interactions with soil enzymes are vary from soil to soil. Based on the toxicity of 2-HQ in our stockpile we need to isolate a handful of microorganisms to treat this persistent metabolite and also other metabolites/compounds.This brief review will be significant from the point of biological and environmental safety.

• 한국작물학회지
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• 제51권6호
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• pp.539-543
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• 2006

Lodging is classified as root lodging caused by the loss of supporting force in the root, bending caused by the deformation of the stem and breaking where the stem breaks down as loads exceeding critical elasticity were applied. This research excluded breaking which is not in a state of equilibrium and tried to partition the level of lodging using an algebraic model in root lodging and stem lodging, or bending. When a vertical load was applied, the deformation of the stem of rice plant showed the form of a quadratic equation. The trace of the panicle neck in the process of lodging was an ellipse-shape. When loading was pure root lodging, the trace of the panicle neck became a circle of which culm length is the radius. When it was a pure stem lodging, the trace of the panicle neck is an ellipse of which major axis is culm length and minor axis is 0.64* culm length. When both stem lodging and root lodging occurred in a natural setting, the partitioning of lodging can be calculated by a formula using eccentricity of an ellipse, S=e*100/0.768(S is the ratio of stem lodging in the whole lodging, e is eccentricity of the ellipse). This method is expected to be useful in simple lodging partitioning. We could also calculate the partitioning of stem lodging and root lodging as units of angles as an accuracy method, by using a straight line calculated by differentiating a quadratic equation of stem deformation at the origin of the coordinates. These two methods for dividing root and stem lodging showed different values. However, each of them showed almost same values with different lodging degree in one plant.

• 한국환경농학회지
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• 제24권1호
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• pp.45-55
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• 2005

This study was undertaken to find out necessary measures to improve the tolerance setting system of pesticide residues on food crops in Korea which is scientifically reasonable and harmonizable with international standards. Information on tolerance setting systems of pesticide residues by Codex Alimentarius Commission, Joint FAO/WHO Meeting of Experts on Pesticide Residues, USA, EU, Japan and Taiwan was collected and analyzed. On the basis of information in the above countries, necessary actions to be taken by the Korean regulatory authorities were recommended with respect to priority setting, maximum residue limits (MRLs) setting based on field residue data, group MRLs, minor crop problems, quantitation limit and dietary intake assessment.

• Mycobiology
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• 제37권2호
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• pp.94-102
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• 2009

Ganoderma applanatum is one of the most popular medicinal mushrooms due to the various biologically active components it produces. This study was conducted to obtain basic information regarding the mycelial culture conditions of Ganoderma applanatum. Based on the colony diameter and mycelial density, PDA, YMA and MCM media were suitable for the mycelial growth of the mushroom. The optimum temperature for mycelial growth was found to be $25{\sim}30^{\circ}C$. The optimum carbon and nitrogen sources were mannose and dextrin, respectively, and the optimum C/N ratio was 2 to 10 when 2% glucose was used. Other minor components required for the optimal growth included thiamine-HCl and biotin as vitamins, succinic acid and lactic acid as organic acids, and $MgSO_4$ $7H_2C$, $KH_2PO_4$ and NaCl as mineral salts.

• 한국자원식물학회지
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• 제13권3호
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• pp.249-254
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• 2000

태양열 집열판을 이용한 가온재배 실태를 조사 분석하고 그에 따른 문제점을 도출하여 해결방안을 모색, 향후 자연에너지 이용 기기제작 및 사용의 기초자료를 제공하고자 태양열 집열판을 이용한 20농가를 조사한 결과, 설치 비용은 18백만원/20a정도 소요되었으며, 주 재배작목은 토마토(30%)와 화훼(40%)였고, 포도, 고추, 오이, 상추 및 딸기 등도 일부 재배하고 있었다. 태양열이용 정보는 대부분 지도기관에서 얻고 있었으며, 연료절감 효과가 20%미만이라고 응답한 농가가 75%로 지도기관에서 조사한 대부분 20%이상과는 차이가 있었다. 연료절감 효과에 비하여 시설비의 과중과 시공업체의 기술부족이 문제점으로 나타나 이의 보완이 필요하였다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.274-274
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• 2017

Temperature has an adverse effect for potential growth and development of Codonopsis lanceolata. The present study examined the responses of growth, yield and mineral element contents under temperature variables in C. lanceolata. Plant height exhibited the best result as being 2 m or higher the open field culture, while the growth is the most restricted in the $30^{\circ}C$. The open field culture also had the largest number of leaves in the early stage of growth. The number of leaves and the height tended to be increased with the temperature of $20^{\circ}C$ and $25^{\circ}C$. The number of branches showed no significance as 32 branches and 26 branches in open field culture and $20^{\circ}C$, respectively. The smallest number of branches was observed in the $30^{\circ}C$ with 15 branches. The leaf color recorded the lowest value in the open field culture unlike the growth above the ground. But all other temperature had no significance with the leaf color value between 50.0 and 52.6. The elevated temperature induced the thinner and shorter diameter and length of root. However, the root diameter was not significantly changed with the change of 1.8 cm and 2.1 cm at open field culture, with $20^{\circ}C$ and $25^{\circ}C$, respectively. The fresh weights of the primary root and lateral roots were 6.3 g and 3.1 g, respectively, at the high temperature. The result showed the thickening of the lowest part under the ground as restricted. The fresh weights of the main root and lateral root were the highest on the open field culture, 20.6 g and 12.2 g, respectively. The contents of cellulose were the highest as 4.41% in the $20^{\circ}C$, followed by the open field culture, $25^{\circ}C$ and $30^{\circ}C$. The higher temperature reduced the contents of cellulose. Moreover, P showed higher ratio in the high temperature while Ca and Mg exhibited the higher ratio towards the low temperature. On the contrary, minor quantity (less than 1%) of mineral nutrients was observed towards all temperature variables.

• 한국작물학회지
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• 제26권2호
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• pp.167-173
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• 1981

본 시험은 대두 종자의 호흡율의 품종간 차 및 종자 부위별 (자엽, 배축, 배꼽) 차를 검토하고, 이러한 호흡율의 차가 발아에 미치는 영향을 구명함으로서 효율적인 고발아성 종자의 초기 선발을 위한 기초적 자료를 얻고저 수행되었다. 1. 1시간 침종후 대두 종자의 흡수율은 종자부입별 및 품종간 차를 인정할 수 있었으나, 종자부위와 품종간 상호작용은 유의성이 없었다. 그러므로 종자부위와 품종은 대두 종자의 호흡에 독립적으로 작용하였다. 2. 자엽의 호흡율은 다른 부위, 즉 배축이나 배꼽에 비해 크게 높았으며 그 평균값은 자엽이 35.7, 배축이 28.0, 그리고 배꼽이 $23.9{\mu}hr^{-1}$ seed$^{-1}$이었다. 그러므로 대두 종자의 저장기관이 전체적으로 호흡에 주요한 영향을 미친다고 할 수 있다. 품종 Bonus는 다른 품종들에 비해 낮은 호흡율을 보였다. 3. 전체 대두 종자의 호흡율에 있어서 침종시간 및 시간과 품종간의 상호작용은 유의성이 인정되었으나 품종간에는 유의적인 차가 없었다. 4시간 침종 동안에 급격한 호흡율의 증가를 보였으며, 평균 호흡율 4시간에 13.6, 8시간에서 16.3, 12시간에서 17.8, 16시간에서 23.2, 그리고 24시간에 $25.3hr^{-1}$ seed$^{-1}$이었다. 4. 품종 Bonus에 있어서 종자 수분함량과 24시간 침종동안의 종자의 호흡률 간에는 유의적인 상관이 인정되었으나, 다른 품종들에 있어서는 상관계수 유의성이 없었다. 이 결과는 품종 Bonus는 다른 품종에 비해 24시간 침종동안 호흡에 보다 많은 수분을 요구한다고 생각한다. 5. 종자무게와 호흡률 간의 상관계수는 유의성이 없었으며, 이 결과는 대두 종자의 호흡률은 종자의 무게와 직접적인 관련이 없는 것으로 사려된다. 또한 호흡율과 3일간의 초기 초장의 신장간에도 유의적인 상관이 없었다.