• Journal of Plant Biology
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• v.37 no.1
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• pp.93-99
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• 1994

은행나무와 곰솔의 유식물의 산성비에 대한 생장에 미치는 영향을 알아보기 위하여 pH 5.6을 대조구로 하여 pH 4.0, 3.2와 2.4의 인공산성비를 3개월간 처리하여 생장량, 엽록소 함량과 탄수화물의 함량을 조사하였다. 은행나무와 곰솔의 유식물은 pH2.4에서 생장이 가장 억제되었으며 반면에 pH 3.2에서는 생장이 촉진되었다. 전체적인 생장량은 뿌리에 비해 지상부의 생장에서 산성비의 영향을 더 받았다. 엽록소 함량은 산성비의 산도에 따라 중요한 차이가 없었으며 은행나무 잎의 탄수화물의 함량은 포도당과 설탕의 함량이 pH 4.0에서 가장 낮았고 전분의 함량은 pH 3.2에서 가장 낮았다.

• Journal of Life Science
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• v.17 no.10
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• pp.1414-1418
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• 2007

This study was to examine the accumulated concentration of lead in the organ of Arabidopsis thaliana grown in the soil added three different concentrations of lead. The accumulated concentrations of lead in the stem of plant grown in the soil added official standard concentration of lead of pollutant exhaust notified by the Ministry of Environment (1 mg/l), concentration ten times higher than the official standard concentration (10 mg/l) and concentration fifty times higher (50 mg/l) were similar to the rate of increase between three different concentrations, and increased average 24% compared with normal plant stem. The accumulated concentrations of lead in the leaf of plant grown in the soil added three different concentrations of lead were increased average 57% compared with normal plant leaf. And accumulated concentrations of lead in the leaf was no significant difference according to increase of lead concentration added in the soil as stem, the rate of increase was similar to between three different concentrations. The accumulated concentrations of lead in the root of plant grown in the soil added official standard concentration of lead of pollutant exhaust and concentration ten times higher were increased average 114% compared with normal plant root, but increased about 861% in the concentration fifty times higher than the official standard concentration. This result contrast with the data of stem and leaf. The accumulated concentration of lead in the plant body of Arabidopsis thaliana was increased according to increase of lead concentration added in the soil. Especially, the accumulated concentration of lead in the plant body grown in the concentration fifty times higher than the official standard concentration was increased about 2.6 times than normal plant. These results show that lead contaminated within the soil was more accumulated in the root than the stem or leaf, and accumulated concentrations of lead in the stem and leaf were not increased in proportion to the concentration of lead in the soil, but very increased in proportion to the concentration in the root.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.34 no.s01
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• pp.4-15
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• 1989

The objective of this paper is to compare and summarize the procedure and effectiveness of some bioassay systems and to point out ways to obtain reliable results from each bioassay. Detailed C:escriptions were given for those widely-adapted bioassay methods, such as mungbean rooting (auxin), Avena first internode straight growth (auxin), dwarf rice growth (gibberellin), dwarf pea epicotyl elongation (gibberellin), radish cotyledon expansion test (cytokinin), and tobacco stem pith callus growth (cytokinin), and the effects of various plant growth regulators including some recently introduced growth retardants (Paclobutrazol, Uniconazol, etc.) were also summarized.

• Journal of Plant Biotechnology
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• v.32 no.2
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• pp.145-149
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• 2005

This experiment was conducted to identify the effect of several plant growth retardants on changes of endogenous free sugar and protein content in seedlings of Sedirea japonica cultured in vitro. The content of free sugar in the leaf was decreased as the treated growth retardant concentration was increased. Glucose content was higher than fructose and sucrose content in the leaf. Free sugar content of the root was increased as concentrations of growth retardants were increased. Sucrose content was higher compared with the content of fructose and glucose. The content of protein in the leaf was decreased as the growth retardants concentration was increased, but the tendency of protein content in the root was contrary to that in the leaf.

• KSBB Journal
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• v.10 no.1
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• pp.15-22
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• 1995

The embryos(6-8mm) isolated from seeds of Diospyros kaki were cultured on Murashlge-Skoog(MS), Woody Plant Medium(WPM), Campbell Durzen(CD), Lictvay's Medium(LM), Kao-Michaluk(KM), Nitsch, White, Heller, Wolter-Skoog(WS) media. The results showed that MS and WPM media were most suitable to the development of embryos into plantlets with length of $5.4{\pm}1.2 cm$ and 5-6 leaves. However, when LM and KM media were used, the addition of 1 to $2{\mu} moles/\ell GA_3$ was required for the germination of the embryos. Superoxide dismutase (SOD) activities, one of the changing factors in leaves according to physiological status displayed to be exceptionally significant in the leaves of plantlets germinated from seeds in potting sand soil contrary to those of cultured embryos specially around germination period.

• Journal of the Korea Organic Resources Recycling Association
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• v.4 no.2
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• pp.27-33
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• 1996

Effect of effective microorganisms on the growth of plant (salvia sp.) was investigated. Microorganisms used were photosynthetic bacteria, lactic acid bacteria and yeasts. When photosynthetic bacteria were inoculated to soil by 100 dilution, treated plants showed 160% growth by length compared to control. When photosynthetic bacteria, lactic acid bacteria and yeasts were mixed, diluted by 10 and inoculated to soil, the plants showed 212% growth compared to control. Microbial populations were increased in the treated soil.

• Journal of Digital Contents Society
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• v.19 no.7
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• pp.1423-1431
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• 2018

IoT(Internet of Things) is applied to technologies such as agriculture and dairy farming, making it possible to cultivate crops easily and easily in cities.In particular, IoT technology that intelligently judge and control the growth environment of cultivated crops in the agricultural field is being developed. In this paper, we propose a method of predicting the growth environment of plants by learning the moisture supply cycle of plants using the intelligent object internet. The proposed system finds the moisture level of the soil moisture by mapping learning and finds the rules that require moisture supply based on the measured moisture level. Based on these rules, we predicted the moisture supply cycle and output it using media, so that it is convenient for users to use. In addition, in order to reduce the error of the value measured by the sensor, the information of each plant is exchanged with each other, so that the accuracy of the prediction is improved while compensating the value when there is an error. In order to evaluate the performance of the growth environment prediction system, the experiment was conducted in summer and winter and it was verified that the accuracy was high.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.100-100
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• 2018

물 고추냉이는 십자화과의 숙근성 다년생 초본식물로서 일본과 대만 등에서 재배되며 세계 여러 나라에서 식품, 가공원료, 향신료, 의약소재 등으로 이용되고 있다. 우리나라에서는 철원과 무주 등에서 재배되고 있으나 재배환경 및 기술의 한계로 규모와 생산량은 매우 저조한 실정이다. 따라서 본 연구는 물 고추냉이 순환 베드시스템 개발을 위한 기초연구로 수행되었다. 마사토의 높이와 고랑의 유무에 따라 3개 베드 (A-마사토 높이 4.0cm, 고랑 있음, B-마사토 높이 5.5cm, 고랑 있음, C-마사토 높이 7.0cm, 고랑 없음)로 시험하였다. 물 고추냉이의 생장량과 식물체 내의 양분 분석(질소, 인산, 칼륨)을 분석하였다. 그 결과 베드 높이가 가장 낮고(4cm) 고랑이 있는 베드에서 생장량이 가장 우수하였고 마사토 높이가 가장 높은(7cm) 처리구보다 생장량이 2배 이상 증가하였다. 전체적으로 엽장보다 엽폭이 길었고 심장형 잎의 특성을 그대로 나타내었다. 식물체 내의 양분 분석 결과 처리구 별로 질소, 인산, 칼륨의 함량 차이가 크게 나타났다. A 베드에서 질소 4,150, 인산 500, 칼륨 1,500ppm 에 비하여 C 베드는 질소 730, 인산 120, 칼륨 700ppm 정도로 낮았다. 대조구의 동일 지역, 동일 기간의 계류지 하우스재배(데이터 미발표)에 비해 순환식 베드 재배가 우수하였고, 특히 A 베드에서 가장 우수하여 절수, 2단 재배 등의 예상되는 효과를 감안할 때 물 고추냉이 순환식 베드 재배의 가능성이 충분하다고 판단된다.

• Journal of Korean Society of Forest Science
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• v.33 no.1
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• pp.1-32
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• 1977

This study has been made to find out more effective way of vegetation establishment on severely denuded forest land from the viewpoint of soil moisture regimes. Various environmental factors were measured to estimate soil moisture conditions of different sites. Soil moisture influence on growth of over vegetations, water requirement and drought resistance were analyzed. The efficiency of water use was also reckoned at different fertility levels and different soil moisture conditions. This research is composed of field experiment and green house experiment. Field experiment includes height growth, survival and coverage analysis of cover vegetations (Robinia pseudoacacia L., Lespedeza bicolor Turcz, Arundinella hirta Tanaka var. ciliare Koidzumi.) with 4 fertility level treatments on 3 slopes (Steep: $37^{\circ}$, Moderate: $25^{\circ}$, Gentle; $17^{\circ}$) during dry season (1 April-30 June) and wet season (1 July-10 September). At the same time temperature, relative humidity and precipitation were measured to understand the environmental changes. Soil moisture conditions were measured with soil moisture meter with 24 soil cells. Green house experiment comprised height, fresh weight and dry weight measurements of cover vegetations with 4 fertility levels and 3 moisture conditions for 70 days. The results extracted from experiments are as follews. 1. Cover vegtations have 3 patterns of water requirement at the early stage of growth. a) Robinia type has high water requirement and weaker drought resistance. b) Lespedeza type has low water requirement and stronger drought resistance. c) Arundinella type has moderate water requirement and weaker drought resistance. 2. The vegetations have different optimum fertility levels in different soil moisture supply condition. a) Robinia needs a low fertility level in dry condition and a high level in wet condition. b) Lespedeza needs only low fertility level in all conditions. c) Arundinella needs a low fertility level in dry condition and a high level in wet condition. 3. The efficiency of water use (Water/1g dry weight) by fertility levels is different from one another. Robinia and Arundinella have a good efficiency at low fertility level in dry condition and at high fertility level in wet condition. Lespedeza has a good efficiency at low fertility level in all conditions. 4. $P_2O_5$ requirement of Robinia and Lespedeza is high, but that of Arundinella is low. Soil moisture condition has a great influence on $P_2O_5$ absorption in dendued forest land. Once Vegetations are established on suitable sites with optimum fertitity level according to different moisture condition, even the small amount of soil water in denuded land can he used with high efficiency and the effect of fertility treatment can be maximized.

• Korean Journal of Plant Resources
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• v.17 no.2
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• pp.161-168
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• 2004

Optimal regeneration conditions of ginseng transformants were studied. It has been known that Ferritin Light Heavy Chain (FLHC) gene remove the several heavy metal by combination, store and transport. To obtain the ginseng tolerant to heavy metal, binary vector was introduced in Agrobacterium by tri-parental mating and then Agrobacterium tumefaciens MP90/FLHC was selected on the AB media and MS media containing kanamycin. Explants were co-cultured with Agrobacterium tumefaciens MP90/FLHC, which contained NPT II as a selectable marker, tadpole ferritin heavy chain (FLHC) gene and human ferritin light chain gene and then a number of embryos were induced. The induced embryo transferred to shooting media consisting of MS medium supplemented with GA 10 mg/L. As a result of examination that induced the normal growth of transfomants, transformants showed the equivalent growth in both root and shoot on the media containing the 1/3 MS.