• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.08a
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• pp.67-67
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• 2020

Though there is an on-going need for the diversity of ornamental plants for in-door environment, their growth and stress adaptability in comparatively low light intensity condition require further studies for implementation. Here investigates the growth and chlorophyll fluorescence parameters of Farfugium japonicum (L.) Kitam, Liriope muscari (Decne.) L.H.Bailey and Acorus gramineus Aiton under several light intensities which were based on common in-door environment. The growth measurement of the plants included the quantity, length, width and SPAD value of the leaves. Calculated values of Fm/Fo, Fv/Fm, Pi_Abs, ETo/RC and DIo/RC were used as the parameters of the chlorophyll fluorescence under 10, 50, 100 and 200 PPFD (μmol·m^-2·s^-1) light intensities. In-door plants group was put in a closed room allowing no other light sources for 10 weeks and the control group was put in glass-greenhouse for the same period. The overall in-door growth of L. muscari was not significantly different in all light intensities compared to the control group and even showed the higher SPAD values. Also, an increasing tendency of Pi_Abs value under 10 to 100 PPFD was observed implying that L.muscari could adapt well to in-door environment. Measurement of A. gramineus growth mostly showed the highest values in the control group especially in the number of the leaves. Nevertheless, chlorophyll fluorescence parameters showed no significant value difference between in-door and the control groups and thus, A. gramineus might have possibility of successful adaptation to in-door environment. F. japonicum showed deficient growth in plant height and leaf length compared to the control but, it seemed to be able to sustain ornamental value under in-door light intensities. Furthermore, Pi_Abs and DIo/RC values were increased under in-door light conditions suggesting potential adaptability of F. japonicum.

• Journal of Ginseng Research
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• v.34 no.2
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• pp.98-103
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• 2010

The medicinal plant Panax ginseng (P. ginseng) contains various phytosterols and bioactive triterpene saponins (ginsenosides). Squalene synthase catalyzes the first committed step in ginsenoside biosynthesis. Transgenic plants of P. ginseng were generated by introducing the squalene synthase gene derived from P. ginseng. Adventitious roots of the transgenic ginseng grew best in B5 medium, and 2 g of inoculum secured an optimal growth rate. Two phytohormones, indolebutyric acid and 1-naphtalene acetic acid, increased root growth and decreased ginsenoside production. Treatment with two selected elicitors, chitosan and jasmonic acid, and a precursor of the isoprenoid pathway, mevalonic acid, enhanced ginsenoside production and retarded ginseng growth rate.

• 한국약용작물학회:학술대회논문집
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• 2012.05a
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• pp.321-322
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• 2012

• Korean Journal of Plant Resources
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• v.20 no.2
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• pp.133-144
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• 2007

The vascular plants at the Wolmyung Park was listed 479 taxa: 105 families, 317 genera, 417 species, 1 subspecies, 55 varieties and 6 forms. 479 taxa listed consists of 291 taxa of edible plants (60.8%), 335 taxa of medicinal plants (69.9%), 234 taxa of ornamental plants (48.9%) and 243 taxa of the others (50.7%). Based on the list of the rare plants by the Forest Research Institute, 4 taxa were recorded in the investigated areas; Aristolochia contorta (Preservation priority order, No. 151), Magnolia kobus (No. 187), Prunus yedoensis (No. 110), Berchemia racemesa (No. 67) and based on the list of Korean endemic plants, 9 taxa were recorded; Cephalotaxus koreana, Carex okamotoi, Populus tomentiglandulosa, Prunus yedoensis, Forsythia koreana, Asperula lasiantha, Weigela subsessilis, Adenophora triphylla var. hirsuta, Aster koraiensis. Specific plant species by floral region were total 31 taxa; Prunus yedoensis, Berchemia racemosa in class V, Magnolia kobus, Wistaria floribunda in class IV, 4 taxa (Spiraea salicifolia, Acer palmatum, Asperula lasiantha, etc.) in class III, Caryopteris incana in class II, 22 taxa (Clematis patens, Orixa japonica, Euscaphis japonica, Grewia biloba var. parviflora, etc.) in class I. The naturalized plants in this site were 14 families, 35 genera, 44 species, 2 varieties, 46 taxa and naturalization rate was 9.6% of all 479 taxa vascular plants.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.12 no.4
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• pp.47-71
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• 2009

The resource plants of northern region in Gapyeong-gun were investigated 7 times from Apr. 2007 to Oct. 2007. In the result of survey, the flora of this area, depend on voucher specimens, consist of 480 taxa totally; 94 families, 286 genera, 412 species, 4 subspecies, 52 varieties and 12 forms. The Resource plants in this area were categorized by their use into edible 177, pasturing 136, medicinal 124, stainable 69, ornamental 133, afforest 24, timber 10, fiber 6, industrial 2 taxa and unknown use plants 72, respectively. There were remarkable plants such as 14 taxa of Korean endemic plants, 85 taxa of specific plants which were designated by the Ministry of Environment, and 12 taxa of rare and endangered plants of Korea Forest Service. Furthermore, 22 taxa of naturalized plants 4.6% were also observed in this area and Urban Index (UI) was 8.2%. The vegetation status of investigated area was comparatively well conserved, but the degree of UI could be increased rapidly by the climbers, development of forest road. Therefore, the systems for conservation need to prepared for the effective management of forest, and the special plans need to control the number of climbers and visitors.

• Journal of applied mathematics & informatics
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• v.26 no.1_2
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• pp.337-347
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• 2008

Based on social welfare maximum theory, the optimal scale of power plants entering generation power market being is researched. A static non-cooperative game model for short-term optimization of power plants with different cost is presented. And the equilibrium solutions and the total social welfare are obtained. According to principle of maximum social welfare selection, the optimization model is solved, optimal number of power plants entering the market is determined. The optimization results can not only increase the customer surplus and improve power production efficiency, but also sustain normal profits of power plants and scale economy of power production, and the waste of resource can also be avoided. At last, case results show that the proposed model is efficient.

• Molecules and Cells
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• v.37 no.8
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• pp.575-584
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• 2014

Potassium is a macronutrient that is crucial for healthy plant growth. Potassium availability, however, is often limited in agricultural fields and thus crop yields and quality are reduced. Therefore, improving the efficiency of potassium uptake and transport, as well as its utilization, in plants is important for agricultural sustainability. This review summarizes the current knowledge on the molecular mechanisms involved in potassium uptake and transport in plants, and the molecular response of plants to different levels of potassium availability. Based on this information, four strategies for improving potassium use efficiency in plants are proposed; 1) increased root volume, 2) increasing efficiency of potassium uptake from the soil and translocation in planta, 3) increasing mobility of potassium in soil, and 4) molecular breeding new varieties with greater potassium efficiency through marker assisted selection which will require identification and utilization of potassium associated quantitative trait loci.

• 한국약용작물학회:학술대회논문집
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• 2007.05a
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• pp.64-65
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• 2007

• Proceedings of the Korean Society of Agricultural Engineers Conference
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• 2003.10a
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• pp.259-262
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• 2003

Surveyed effluent capacities for potential wastewater resources through the surveying of the sewage treatment plants its capacity is up to 10,000 tonnes per day located 4 provinces (kyunggi, gangwon, chungbuk, chungnam) in this year. The total effluent capacities in this provinces are 423 thousand $m^3/day$, which may be used to irrigated paddy fields of 2,310ha A GIS database for wastewater resource inventory was developed for 4 provinces (kyunggi, gangwon, chungbuk, chungnam) to explore the feasibility of the wastewater reuse for drought mitigation. And it is to be extended to the other wastewater treatment plants.

• Korean Journal Plant Pathology
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• v.11 no.2
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• pp.120-131
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• 1995

이 연구는 우리나라의 유용 자원식물에 발생하는 진균성 미기록 병해에 대한 두 번째 보고이다. 10가지 병해에 대한 각각의 병징, 병 발생환경, 병원균, 그리고 몇 가지 병리학적 소견을 기록하였다. 동자꽃 갈색 무늬병은 장마철부터 발생하여 심한 잎마름을 일으켰으며, 병원균은 Septoria lychnidis로 동정되었다. 산박하 모무늬병은 장마철에 심하게 발생하고 작은 모무늬가 합쳐져 잎의 한쪽이 검게 고사하였는데, 병원균은 Septoria plectranthi로 동정되었다. 좀명아주 갈색 무늬병은 여름부터 가을까지 흔히 발생하여 조기낙엽을 일으켰으며, 병원균은 Cercospora dubia로 동정되었다. 나팔꽃 점무늬병은 장마철부터 가을까지 흔히 발생하여 관상가치를 떨어뜨렸는데, 병원균은 Cercospora ipomoeae로 동정되었다. 돌콩 점무늬병은 장마철부터 가을까지 계속 발생하여 생육을 크게 저해하였는데, 병원균은 Pseudocercospora ligustri로 동정되었다. 박주가리 뒷면곰팡이병은 여름부터 가을까지 흔히 발생하여 조기낙엽과 황화를 일으켰는데, 병원균은 Passalora miurae로 동정되었다. 고려엉겅퀴 흰가루병은 여름부터 발생하여 묵나물의 수향과 품질에 피해를 주었는데, 병원균은 Sphaerotheca fusca로 동정되었다. 왜당나귀흰가루병은 국지적으로 발생하여 생육을 저해하고 어린 묘는 고사시켰는데, 병원균은 Erysiphe heraclei로 동정되었다. 가래나무 점무늬병은 장마철에서 가을까지 발생하여 잎마름을 유발하였는데, 병원균은 Sphaerulina juglandis로 동정되었다.