• 한국농공학회논문집
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• 제61권6호
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• pp.123-132
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• 2019

This study is to estimate the spatial soil moisture using Terra MODIS (Moderate Resolution Imaging Spectroradiometer) satellite data and machine learning technique. Using the 3 years (2015~2017) data of MODIS 16 days composite NDVI (Normalized Difference Vegetation Index) and daily Land Surface Temperature (LST), ground measured precipitation and sunshine hour of KMA (Korea Meteorological Administration), the RDA (Rural Development Administration) 10 cm~30 cm average TDR (Time Domain Reflectometry) measured soil moisture at 78 locations was tested. For daily analysis, the missing values of MODIS LST by clouds were interpolated by conditional merging method using KMA surface temperature observation data, and the 16 days NDVI was linearly interpolated to 1 day interval. By applying the RNN-LSTM (Recurrent Neural Network-Long Short Term Memory) artificial neural network model, 70% of the total period was trained and the rest 30% period was verified. The results showed that the coefficient of determination ($R^2$), Root Mean Square Error (RMSE), and Nash-Sutcliffe Efficiency were 0.78, 2.76%, and 0.75 respectively. In average, the clay soil moisture was estimated well comparing with the other soil types of silt, loam, and sand. This is because the clay has the intrinsic physical property for having narrow range of soil moisture variation between field capacity and wilting point.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 춘계학술대회
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• pp.20-20
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• 2020

Eranthis stellata Maxim. is a perennial plant that grows around the valley. E. stellata is concerned about the decline in natural habitats due to climate change in KOREA, continues to be observed and protected as an endangered species (Least Concrned, LC). Nevertheless, studies on the characteristics of the seeds of E. stellata are insufficient. So, this study analyzed the morphological characteristics and dormancy types of seeds. Seeds of E. stellata was collected in April at Gyeongsangbuk-do Arboretum and kept at 5 ℃ until using. To investigate the morphology of seeds, an optical microscope and a scanning electron microscope (SEM) were used. GA3 treated or untreated seeds (4 replicates of 25 seeds each) were observed germination and embryo growth for 1 month at 5 ℃ and 25/15 ℃ (12h day/12h night). The seed surface of E. stellata, light brown, was observed as a common characteristic of Eranthis genus, reticulate. The short axis of seeds was 1.11~1.77mm (average 1.44mm), and the long axis was 1.27~1.91mm (average 1.63mm), which was investigated in a slightly round shape (subglose). While no germination was observed at all conditions, Embryo growth was observed at 5 ℃ both in the control group and with GA3treated groups. Thus, seeds of E. stellata are classified as morphological physiological dormancy (MDP), which requires embryonic development and dormant break at the same time. These results can be useful information for determining morphological physiological seed dormancy and germination, and will be an important basic data for seed propagation of E. stellata as a resource.

• 한국육종학회지
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• 제42권6호
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• pp.611-614
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• 2010

'Heidi' 품종은 국립원예특작과학원에서 2004년도에 육성한 포인세티아 품종이다. 이 품종은 2001년에 생육이 왕성하고 진분홍색인 'Freedom Rose'를 모본으로, 진한 녹색 잎에 결각이 있으며 적색인 'Red Velvet'을 부본으로 교배를 실시하여 양성된 실생계통 중 선발되었다. 2002년과 2003년 2차에 거쳐 특성검정을 하여 '원교 D5-9'를 육성하였고, 2004년에 3차 특성검정과 품평회를 실시하여 최종선발, 'Heidi'로 명명하였다. 포엽의 형태는 타원형이며 포엽에 접힘이 있고 포엽엽맥사이에 중간 정도의 주름이 있으며 포엽의 색상은 벨벳질감의 적색이다. 잎몸은 난형이며 진한 녹색이고 결각이 거의 없으며 엽병이 짧다. 줄기 색은 적색계이며 적심을 하지않은 상태에서도 분지가 발생하나 줄기의 수는 적다. 초장은 작으며 단일처리 후 약 7.5주일이 경과하면 완전히 착색되어 출하가 가능하다.

• 한국조경학회지
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• 제14권1호
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• pp.1-13
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• 1986

The purpose of this study is to investigate the effect of temperature control by a shade tree and the lawn area. In this investigation, we find out that artificial-lawn, concerte, and exposed soil are more higher temperature than covered with plant materials. The results of the measurement may to summerized as follows; 1) Low-temperature effects of zoysia japonica is more controlled by condition of growth than leaf length of grass. Surface temperature make 0.7$^{\circ}C$ difference between long grass (15cm), and short grass (5cm), but make 5$^{\circ}C$ difference between good growth grass (230/10$\textrm{cm}^2$) and bad growth grass (80/10$\textrm{cm}^2$). 2) The surface temperature of the lawn area is 40.5$^{\circ}C$ lower on a maxinum than that of the artificial lawn (July 28, 1985). During the day of summer, shade area under the shade tree is 0.9$^{\circ}C$ lower then lawn area surface temperature, 6.9$^{\circ}C$ lower than bad growth lawn, 10.3$^{\circ}C$ lower than exposed soil, and 18$^{\circ}C$ lower than concrete surface temperature. 3) Natural irrigation effect on the surface temperature fluctuation. But this effect is changed by compositions of ground materials and time-lapse. 4) Sunny day is more effective than cloud day. 5) In summer season, surface temperature make a difference compare to temperature of 0.5-1.5m height from ground : Surface temperature is 3.4$^{\circ}C$ lower at the lawn area (11 a.m.), 4.2$^{\circ}C$ lower at the shade area the shade tree, 12.7$^{\circ}C$ higher at the concrete area (3p.m.), 38.8$^{\circ}C$ higher at the artificial lawn (2p.m.) 6) According to compositions of ground materials and season have specific vertical temperature distribution curve. 7) In summer season, temperature distribution of 0.5-1.5m hight at the shade tree is 4.8-5.7$^{\circ}C$ lower than concrete area (noon-3p.m.)

• 대한통합의학회지
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• 제9권4호
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• pp.139-147
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• 2021

Purpose : The purpose of this study is to verify the effectiveness of combined marine healing programs by analyzing the physical composition of metabolic patients, blood lipids and the effects of the inflammatory factors, the C -reactive protein(CRP). Methods : the combined marine treatment program was conducted for 6 hours a day, 5 days a week on the 10 adult patients with metabolic diseases and the results of their body composition, blood lipids and CRP were analyzed before and after the subjects completed the program. For the statistical analysis, the mean and standard deviation (M±SD) of each variable were calculated using SPSS version 20 and a paired t-test was conducted in order to test for the differences before and after the combined marine treatment program. All significant levels were set to 𝛼=.05. As a result of the experiment Results : First, regarding the changes in body composition and blood pressure after the 5-day combined marine treatment program was completed, there were statistically significant differences found in weight (p<.01) and systolic blood pressure (p<.05). Second, regarding the changes in blood lipids and CRP after the program was conducted, there were statistically significant differences found in total cholesterol (p<.05) while there was no statistically significant difference found in the variables of neutral fat, low-density lipoprotein cholesterol and CRP. Conclusion : the study results were integrated, the 5-day combined marine treatment program had a positive effect on weight, blood pressure and total cholesterol in the patients with metabolic diseases. Therefore, the short-term marine treatment program was thought to be effective for them. However, considering no significant differences were found in neutral fat, low-density lipoprotein cholesterol and CRP, further development and research on combined marine treatment programs should be conducted in the long term to create an effective program for patients with metabolic diseases.

• 원예과학기술지
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• 제32권4호
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• pp.434-439
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• 2014

이 연구는 야파 처리 시간대가 살비아 'Salsa'의 영양생장 및 개화에 미치는 영향을 조사하고, 저광도 야파 처리가 광합성을 증가시킬 수 있는지 알아보고자 수행되었다. 살비아는 9시간의 단일조건 또는 9시간 일장에 $3-5{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$의 광도의 야파를 추가한 조건의 식물 생육상에서 재배되었고, 야파 처리는 18시-22시(NI18), 22시-02시(NI22), 02시-06시(NI02)의 세 구간으로 나누어 적용되었다. NI18, NI22, NI02 처리구에서 광합성은 야파 처리 시간 동안에 각각 0.33, 0.16, $0.13{\mu}mol{\cdot}CO_2{\cdot}m^{-2}{\cdot}s^{-1}$만큼 증가하였다. 하지만 엽폭, 엽장 등의 영양생장은 단일 조건하의 식물들과 유의성 있는 차이를 나타내지 못하였다. 야파 처리 시 개화까지 걸리는 시간은 9.8일 단축되었고, 17주간 야파 처리 시 꽃의 수는 단일 조건의 36.4개에 비해 NI02 처리구에서 138.7개로 증가하였다. 이러한 결과는 02시부터 06시까지의 야파 처리가 개화를 촉진하는 데에 가장 효과적이라는 것을 보여준다. 그러나 야파 처리 시간 동안에 증가한 광합성량은 살비아의 영양생장 증가에는 효과를 보이지 못하였다. 비록 야파 처리 동안의 미미한 광합성의 증가가 살비아의 영양생장을 증가시키지는 못하였지만, 개화에는 크게 영향을 미쳤다. 단일 조건에서는 44.4%만이 개화하였지만 8주간 야파 처리시 NI18, NI22, NI02 처리구에서는 각각 77.8, 88.9, 100.0% 개화하였다.

• 생태와환경
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• 제48권1호
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• pp.32-37
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• 2015

여러 가지 경로를 통해 유입된 귀화식물은 전국적으로 분포하며, 사구생태계에도 침입하여 자생종의 생태적 지위를 위협하고 있다. 본 연구는 해안사구에 분포하는 귀화식물의 효율적 관리 방안을 마련하기 위해 비생물적 요인인 염분스트레스가 달맞이꽃의 생장에 미치는 영향에 대한 실험을 실시하였다. 염분농도구배에 의한 발아 실험 결과 농도가 높을수록 발아율이 감소하였으며, 염분에 대한 내성범위는 160 mM까지 나타났다. 유묘기에 실시한 염분농도구배 실험에서 200 mM까지는 90% 고사하였으며, 300 mM 이상에서는 100% 고사하였다. 최초 고사일은 실험 시작 후 100 mM에서는 18.5일, 800 mM에서는 6일이었으며, 최종 고사일은 100 mM에서는 29.5일, 800 mM에서는 6일이었다. 따라서 해안사구에 분포하는 달맞이꽃의 관리 방안은 2단계 과정을 제안한다. 1단계는 발아시기 이전에 170 mM 이상의 염분을 분사하여 발아를 억제하는 방안이고 2단계는 유묘기인 6월에 달맞이꽃 잎에 600 mM 이상의 염분을 분사하여 단기간에 고사시키는 방안을 적용한다면 해안사구에 분포하는 귀화식물 관리에 효과적일 것으로 판단된다.

• 원예과학기술지
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• 제16권1호
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• pp.15-17
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• 1998

폐광에서 유출되는 냉기 및 냉수를 활용하여 시설내에서 딸기를 야냉단일처리하여 개화, 화방 및 수량에 미치는 영향에 대하여 조사하였다. 개화율은 정식 70일후 대조구에서 65% 이하로 나타났지만, 야냉단일 처리구에서는 품종과 처리에 관계없이 100% 이었다. 화방 및 화뢰수는 전 품종에서 대조구에 비해 야냉단일처리구에서 현저히 증가하였고, 평균 개화일수도 야냉처리에서 7-15일 정도 단축되었다. 과실 및 총수량은 '수홍'이 5주 처리에서 개당 24.2g으로 가장 많았고, 대조구에 비해 야냉단일 처리구에서 수확기간내의 총수량이 6-7배 증가하였으며, 평균 수확일은 정식 후 80-97일로 나타났다.

• Journal of Plant Biotechnology
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• 제5권4호
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• pp.215-219
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• 2003

Optimal shoot regeneration and transformation conditions of root type chicory (Cichorium intybus L. var. sativus cv Cesare) were studied. Leaf explants were co-cultured with Agrobacterium tumefaciens, which contained NPTII as a selectable marker and a rice homeotic gene, OsMADS1, that encodes a MADS-domain-containing transcription factor. After one day of co-cultivation, explants were transferred to selection media consisting of MS basal medium supplemented with 0.5 mg/L BAP, 0.1 mg/L IAA, 70 mg/L kanamycin, and 250 mg/L cefotaxime. PCR and Southern blot analyses revealed stable integration of the OsMADS1 gene in the chicory genome. Four-teen original transgenic plants ($T_o$ plants) were acclimatized in the greenhouse and examined for their morphological characters. Most of the transgenic plants showed altered morphologies, such as short, bushy, and early-flowering phenotypes with reduced apical dominance. Additionally, half of the transgenic plants exhibited altered leaf shapes, and 4 out of 14 plants were sterile. These phenotypes were inherited by the next generation. Northern blot analysis confirmed expression of the OsMADS1 gene in both floral and vegetative organs.

• 원예과학기술지
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• 제30권3호
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• pp.325-328
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• 2012

'My Sun'은 경기도농업기술원에서 2009년도에 육성한 분화용 국화 신품종으로 2005년도에 오렌지 계열 분화용 국화 'Omega Time Orange' 품종을 모본으로 하고 흰색 'Tasman' 품종을 부본으로 교배하여 얻었다. 이 품종은 노란색 꽃잎을 가진 초장이 짧은 홑꽃이다. 2006-2009년까지 춘계 촉성재배와 동계 억제재배를 포함하는 특성검정을 수행하였다. 'My Sun' 품종의 자연개화기는 10월 13일이며, 전조재배와 차광재배로 개화가 조절되어 주년 재배가 가능하다. 화경은 21mm, 착화수는 본당 34.4매이고 꽃잎수는 20.4매이다. 엽색은 녹색(Green Group 137A)이고 초장은 13.3cm이다. 개화소요일수는 춘계에는 단일처리 후 42일 정도이며, 분지수는 겨울철에는 3.4개 정도를 가진다. 이 품종은 흰녹병 저항성이고 대조품종에 비해 기호도가 높은 편이었다.