• The Korean Journal of Mycology
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• v.50 no.1
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• pp.55-59
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• 2022

Anamorph of a powdery mildew was collected from Convolvulus arvensis (Convolvulaceae) in 2021 in Korea. Based on the morphological examination and molecular phylogenetic analyses of the internal transcribed spacer and large subunit rDNA gene, the powdery mildew was identified as Erysiphe convolvuli. This powdery mildew species is commonly found in Europe and North America, but rarely in East Asia. The holomorph of this powdery mildew was first recorded on Calystegia hederacea in Korea. Conclusively, this is the first report of E. convolvuli on C. arvensis and the second record of this powdery mildew species in Korea.

• Weed & Turfgrass Science
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• v.4 no.4
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• pp.315-320
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• 2015

Burcucumber (Sicyos angulatus) is an annual invasive plant species originated from North America. This species grows by twining around tree trunks, and blocks other plants from photosynthesis. Thus, it has caused the destruction of the ecosystem and biological diversity by threatening native plants. This study was performed to find out the effect of different soil water content (20%, 13%, 10%, 3%) and various shading degrees (0%, 60%, 80%) on the growth and photosynthesis-related activity of burcucumber. In the responses of burcucumber to soil water content, plant height (PH), leaf length (LL), leaf width (LW) and photosynthetic efficiency (PE) were lower at 20% water content than 10% reflecting that burcucumber plant grow well in the less dry soil and shows poor growth under wet soil condition. In shading experiment, PH, LL, LW and PE were lower at 80% than 60% shading and in general, the growth characteristics were lowered as the shading intensity increased. The improved growth of burcucumber under highly or moderately shaded condition implies that the plant can grow well without growth retardation and can be adapted to shading condition with other tall plant species including tree. Further study on the combination effects of above factors should be conducted in future for effective ecological control of burcucumber.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.5 no.2
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• pp.39-44
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• 1972

Considerable damages of the cultivated Porphyra by Porphyra diseases were reported from the Porphyra culture bed along the coast of Yongwon-ri, Changwon, Kyungnam during the years of 1969 and 1970. The present study deals with the effects of fertilizer plant effluents on the Porphyra diseases, and the results are summarized as follows : 1. By the result of current observation, the polluted water of Haeng-am Bay which has an inflow of pollutants from the fertilizer plant was affecting the bed with tides. The results of pollution studies in Chinhae Bay and adjacent waters conducted by Won and Park(1971) also show that Chinhae Bay and adjacent waters are contaminated with the plant effluents. It seems that the effect increases due to the wind drift current when north-westerly or westerly winds prevail. Accordingly, effects of the Porphyra diseases in the culture bed seem to originate from the pollutants, since there are more damages when the north-westerly or westerly winds prevail, and also spring tide develops. 2. As compared to the photosynthetic activity of the Porphyra suborbiculata in uncontaminated seawater, it decreases up to $4\%$ in 200pmm, $20\%$ in 300ppm and $43\%$ in 1,000ppm of contaminated seawater which contains dilluted pollutants from the fertilizer plant. The results of the measurements using the water collected in the polluted area of Chinhae Bay and adjacent waters revealed that the photosynthesis was depressed about 21 to $34\%$ near the plant, and in the area of the Porphyra beds, $15\%$ in the portion where tide is weak and $5\%$ where the tide is strong, in comparison with the area of unpolluted water. 3. Although the present results do not indicate the exact level of harmful pollutants, it is evident that the pollutants of the plant effluents interfere photosynthetic activity of the Porphyra, even in the water containing pollutants as low as 200 ppm.

• Journal of the Korean Institute of Landscape Architecture
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• v.49 no.5
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• pp.71-78
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• 2021

Green areas and the area of available horizontal surfaces are gradually decreasing due to the overcrowding of buildings. It is adversely affecting the urban climate and ecosystem. However, the recognition of the importance of green areas is gradually increasing. As a result, the importance of wall greening using vertical surfaces is growing. However, despite the fact that domestic wall greening guidelines and institutions related to orientations restrict planting. there was no study to determine whether there were actual differences in plant growth due to orientations. Therefore, this study compared and analyzed the plant growth characteristics by orientations to apply actual wall greening to cities. The experiment was conducted from May to September 2020. First of all, three octave walls were constructed to measure the temperature, the illumination, and the length of the plants once a week. The plants included Parthenocissus tricuspidata, Hedera rhombea, and Euonymus radicans cv. Aueonmarinata Rehd plants. As a result of the study, Parthenocissus tricuspidata was prolific in the north, and Hedera rhombea, and Euonymus radicans cv. Aueonmarinata Rehd plants were prolific in the south. All three types of plants were prolific in June-July, and the Parthenocissus tricuspidata was prolific in grass-growing, and in August, all the walls were 100% covered. Hedera rhombea had the lowest rate of herbaceous growth, and the vertical coverate was also lower at an average of 45%, but among the three plants, the sheath of the horizontal surface coverate was the highest. Euonymus radicans cv. Aueonmarinata Rehd was low in the speed of herbaceous growth, and finally, the walls were 100% covered except for the north and northwest directions. It was found that not all plants used for wall greening show the same growth, and the difference in growth varies more depending on plants than the effect of orientations. Therefore, it is better to identify the characteristics of plant growth and plant suitable plants for each directions.

• Korean Journal of Oriental Medicine
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• v.8 no.1
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• pp.93-104
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• 2002

The following is a list of morphologic and genetic characteristics of Pinellia tuber. 1. The original plant of Pinellia tuber is Pinellia ternata$(T_{HUNB})$$B_{REIT}$. With regards to its external morphology, it is smaller than other Araceae species and its spadix is longer than its leaves, which trifurcate. 2. As regards its internal morphology, its mucous cell is elliptical and the vessel is helical or annular-shaped. Granules exist in abundance and in various shapes. 3. Distribution and size of laticifers are the key criteria on which to differentiate between domestic and imported Pinellia tuber. Laticifers are mainly distributed in the epidermis in domestic Pinellia tuber and in the cortical parenchyma in imported Pinellia tuber. The size of laticifers is somewhere between 1,3 and $8{\mu}m$ in diameter in imported Pinellia tuber bigger than its domestic counterpart. 4. RAPD markers display a great similarity in bands between domestic and Chinese Pinellia tuber. However, RAPD primers 352, 358, 365, 368 and 374 are distinctive markers for domestic Pinellia tuber. In the meantime, North Korean Pinellia tuber, morphologically similar to domestic Pinellia tuber, is genertically distinctive from its domestic counterpart in primers 354, 358, 365, 368, 374 and 379, a finding that supports the postulation that North Korean Pinellia tuber is tuber of another Araceae species.

• Journal of Korean Society on Water Environment
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• v.27 no.2
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• pp.200-209
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• 2011

The purpose of the study is to optimally manage sewage treatment plant with analysis of phosphorus contribution and improvement of water quality contributing rate in the effect of inflowing point of effluent and Pal-Dang lake after reducing T-P discharge from large scale public sewage treatment plant at upstream of Pal-Dang lake. Also, this study, for enforcement of T-P in effluent, plans optimal management of effluent T-P through examining propriety of environmental, technological, and economical aspect such as water quality standard of domestic and foreign T-P and related policy. In regarding optimal management of T-P discharged from public sewage treatment plant located in upstream of Pal-Dang lake, the study drew following conclusions. With the optimal management of public sewage treatment plant, it showed that a pollution level became higher in the order of Sumgang E in South-Han river, C in Dalcheon, B1 B2, A in North-Han river, and J in Kyungancheon, and it is required reduction of T-P first. The highest value in analysis of benefit-costs from sewage treatment plant in the selected research area was Kyungan B, and the others are with the order of Jojong A, Bokha A, Kyungan A, and Yanghwa A. With result of this study, all 14 areas are required more enforced phosphorus treatment. The study resulted that the most top priority areas were Hangang F, Sumgang B, and Gyungan A, top priority areas were Bokha A, Dalcheon B, and Cheongmi A, priority areas were Hangang E, Heukcheon A, Gyungan B, and Jojong A, and potential areas were Sumgang A, Yanghwa A, Dalcheon A, and Hangang D. It seems to be appropriate to apply 0.2 mg/L of T-P treatment for water supply source reservation, 0.5 mg/L for the other areas by locally, and 0.2~0.5 mg/L for biological nitrogen phosphorus treatment method and 0.5~1 mg/L for Conventional Activated Sludge by technologically. Also, it may be appropriate to apply 0.2 mg/L for the most top priority area(I), 0.3 mg/L for the top priority area(II), 0.4 mg/L for priority area(III), and 0.5 mg/L for potential area(IV) by the separation of priority area.

• Korean Journal of Environmental Biology
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• v.28 no.1
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• pp.40-48
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• 2010

A total of 63 taxa was identified with a mean abundance of total zooplankton ranging from 85~28,087 indiv.$m^{-3}$. Cluster and nMDS analysis showed that the study sites could be divided into two regions: North and East part of the sampling area (group A) and South part of the sampling area (group B). The number of taxa and species varied significantly among the two regions (ANOVA, p<0.05). The pattern of the spatio-temporal distribution of the zooplankton community in the coastal waters around the Wolseong Nuclear Power Plant is affected by the variations of seasonal water temperature. However, zooplankton community were no significant between the water temperature and heated discharge.

• Journal of the Korean Institute of Landscape Architecture
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• v.49 no.4
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• pp.1-14
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• 2021

This study examined the techniques of creating gardens overseas using native plants from the Korean peninsula, focusing on the case of 'Das Dritte Land', an art garden created in Berlin, Germany. While Korean garden artists are recognized worldwide and are planning to globalize Korean gardens, the purpose of this study is to share information so that Korean gardeners can expand their activities and rediscover the utilization and value of plants native to the Korean peninsula. The work began as part of a project to mark the 30th anniversary of the collapse of the Berlin Wall. To realize the landscape of Korea with the motif of Inwang Jesaekdo, the geographical shape of the Baekdu-Daegan trail was reproduced with black stone, and the naturalization of Korean peninsula species was utilized in the creation of a garden Berlin. It is a surreal bio-top utopia that blooms with the bio-groups of the Korean peninsula. This study examined the process of plant survey analysis, transportation and stabilization, planting planning, composition and monitoring, and targeting the self-growth of the Korean peninsula, which is a symbol of harmony between the South and the North. The planting of Korea's native plants in overseas gardens symbolizes the uniting of the ecosystems on the Korean peninsula. The process of the Korean peninsula's young plants taking root, flowering, and spreading along Germany's previously divided border metaphorically conveys the desire for the unification of the Korean peninsula. In addition, various art programs in the garden space suggest a foundation for cultural dialogue and communication between the two Koreas. Moreover, creating gardens overseas implies that the cooperation of plant research institutes plays an important role in the transfer of plants and the maintenance of life, while the advancement of Korean gardens overseas plays an essential role in the spread of garden culture in our country.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.1368-1369
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• 2011

이 연구는 최근 물 부족시대를 대비한 차세대 기술로 각광 받고 있는 해수담수화설비의 동력을 기존의 화석연료에서 신재생에너지로 전환하고 있는 세계적인 추세와 기술동향을 살펴보고 국내 적용 가능성을 검토한 것이다. 특히 태양열, 태양광, 풍력 등을 활용하여 MENA(Middle East Asia & North Africa), 스페인, 지중해 연안 등의 지역에서 추진 중인 프로젝트의 성과를 살펴보고, 이를 토대로 극심한 물 부족으로 불편을 겪고 있는 국내 해안 도서지역에 적용할 수 있는 방안을 검토하였다.

• Korean Journal of Pharmacognosy
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• v.18 no.3
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• pp.196-201
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• 1987

A study was carried out to investigate the possibility of acclimation of Coptis japonica Makino in Korea. Coptis japonica could be grown within 4 years as a medicinal crude drug if it is cultivated in the area of mountain facing north(300m above sea level) with 70% light interception and appropriate soil texture. It is to be noted that the propagation of the plant is more important than the yield of berberine because the berberine contents do not change in different conditions. The results were as follows; 1. The germination rates of the seeds by covering with the pine tree leaves were the highest and averaged 63%. 2. The germination rates of dry seeds were not affected in spite of low temperature and $GA_3$ treatment. 3. The germination rates of the seeds stored in moistured sand were averaged 85%, but in dry state, they were not germinated. 4. The number of leaves and fresh weight of Coptis japonica from the area of mountain facing north were increased significantly. 5. The growth and fresh weight of Coptis japonica were reduced in clay. 6. The best growth was obtained under 70% light interception. It is possible to intercrop between evergreen trees. 7. The foliage dressing did not affect the growth. 8. The number of leaves and fresh weight were increased from the 3rd year, and the average weight of rhizomes was 5.7g in 4th year. 9. The berberine contents of the rhizomes of Coptis japonica under various treatment conditions ranged from 9 to 10%. Coptidis Rhizoma from this study and from Korean market showed much higher berberine contents than those from Japanese market.