• Proceedings of the Plant Resources Society of Korea Conference
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• 2010.10a
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• pp.23-23
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• 2010

전북 서해안 새만금 지역에 조성되는 간척지 면적 28,300ha의 30%인 8,400ha 정도가 농업용지로 사용되는 계획이 확정됨에 따라 해당 용지를 효율적으로 사용 할 수 있는 다양한 활용 방안이 요구되고 있다. 대단위 농업지구가 들어설 예정지인 새만금 광활 간척지는 네덜란드와 유사하게 토양의 대부분이 미사질 양토로 이루어져있어 적용 가능한 화훼류를 적절히 선발하고 적합한 재배기술을 도입한다면 대규모 화훼제배 단지로서의 성장 가능성이 충분할 것으로 판단된다. 따라서 전북 농업기술원에서는 2004년부터 7년에 걸쳐 새만금 간척지의 농업적 활용도 제고와 경관농업 육성을 통한 관광자원화 가능성을 확인하기 위하여 72종의 원예작물 적응시험을 실시하였으며 22종의 자생식물과 튤립, 아이리스, 수선화, 히아신스, 참나리 등 5종의 구근 화훼류를 적합 화훼류로 선발하였다. '08~09년에는 내염성과 저온 및 풍해 저항성이 있는 아펠톤, 골든아펠톤, 네그리타, 프랑소와즈, 키스네리스 등을 간척지적용 가능 주요 튤립 품종으로 선발 하였는데 선발된 품종들을 대상으로 높은 염농도 하에서의 체내축적 무기성분을 조사한 결과, K와 Mg은 증가되는 경향이었으나 Ca은 감소되었으며, Cl이온은 현저하게 증가하였다. 또한 튤립체내의 산도 및 전기전도도와 항산화효소의 활성이 증가하였는데 스트레스 반응결과 유해산소가 체내에 축적되고, 이를 중화시키기 위하여 수소이온을 소모함으로써 체내의 산도는 상승된 것으로 추정되며 염분함량이 높을수록 삼투압에 의하여 뿌리에서 흡수는 양분이 적은 반면 잎 줄기의 증산작용은 동일하기 때문에 상대적으로 체내의 농도가 높아져 전기전도도가 상승된 것으로 판단된다. 식물 스트레스의 지표물질로 사용되고 있는 proline 함량도 토양내의 염도가 상승되면서 증가되었으며 엽록소 함량은 감소되는 경향을 보였다.

• Journal of Life Science
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• v.13 no.6
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• pp.822-828
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• 2003

This study was carried out to investigate the changes of enzymes and micro inorganic nutrients that is associated with flower senescence during flower development in tulip cultivars, ‘Apeldoorn’ and ‘Golden Apeldoorn’. Ribonuclease, peroxidase and protease activities were gradually increased from the stage of early flowering to later Polyphenol oxidase showed the highest activity at stage 5, which the flower was in full bloom indicating that it acts at an initial stage of flower senescence. The protease activity was different in the petal extracts during flower development between the cultivars ‘Apeldoorn’ (red petal) and ‘Golden Apeldoorn’ (yellow petal). This result suggested that protease might relate to pigment biosynthesis in petal of tulip. In contrast to the decrease of inorganic nutrients K, Mn, Zn and P contents during floral development, Ca, Mg and Fe showed the gradual increasement that is similar with ribonuclease, peroxidase and protease. It suggests that they have some interaction during flower senescence.

• 프린팅코리아
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• v.14 no.3
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• pp.52-52
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• 2014

한국스크린인쇄공업협회(회장 이수창)는 지난 2월 21일 오후 3시 국도호텔 3층 튤립홀에서 제32차 정기총회를 개최했다. 이날 총회에서는 박대현 (주)화인씨앤씨 대표이사가 22대 회장에 선출됐다.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2000.10a
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• pp.104-107
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• 2000

• Journal of Korean Society of Forest Science
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• v.86 no.3
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• pp.342-351
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• 1997

The objective of this study was to compare acid-neutralizing and buffering capacity of four tree species against soil acidification by acid rain. About 30-year-old forests composed of Pinus rigida, Alnus hirsuta, Quercus mongolica, and Liriodendron tulipifera in a provincial experimental forest located 15km east from Banwol Industrial Complex in Kyonggido were used in this study. Incident precipitation, throughfall and stemflow, and soil samples were collected from May to September, 1996 to analyze their pH and canon concentrations. Internal leaf pH, external acid neutralizing capacity(ENC), and buffering capacity index(BCI) of leaves were also determined. The incident precipitation showed an average pH of 4.56, with the percentage of acid rain incidents being 74%. The average soil pH of the study area was 4.15. The pH of throughfall and stemflow in all four species was higher than that of precipitation except that of the stemflow of Pinus rigida which showed a pH of 3.73. The throughfall of Liriodendron tulipifera showed the highest pH of 5.38. The pH of throughfall and stemflow showed a positive correlation and no correlation, respectively, with precipitations. The most abundant cation in precipitation was Ca. The canon concentraions in throughfall and stemflow decreased in the following order of K, Na, Ca, and Mg. Cation concentrations in stemflow were highest in Lirioendron tulipifera and lowest in Pines rigida. Nutrient leaching from above ground increased with decreasing pH of precipitation. The pH of stemflow showed a positive correlation with ENC and BCI. The highest values in ENC, BCI, soil pH, and soil cation concentrations were observed in Liriodendron tulipifera, while the lowest values were obtained in Pinus rigida, It was concluded that Liriodendron tulipifera had highest neutralizing capacity against acid rain, while Pinus rigida had the lowest capacity and even promoted acidification of soil.

• Korean Journal of Plant Resources
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• v.24 no.1
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• pp.23-29
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• 2011

In order to screen the functional constituents from nature resource, we studied the bioactivities of methanol extract of the Liriodendron tulipifera branch(MLT). The total phenolic and flavonoid contents, DPPH radical scavenging capacity, reducing power, $Fe^{2+}$ chelating ability, inhibition of lipid peroxidation and cell toxicity of MLT were investigated in this study. We found that the total phenolic and flavonoid content of MLT is 75.34 mg gallic acid/g and 20.15 mg quercetin/g respectively. MLT exhibited the antioxidant activity on DPPH radical with a $EC_{50}$ value of $289.68\;{\mu}g$/mL, the absorbance is 0.388 at $100\;{\mu}g$/mL in reducing power assay, MLT prevented 38.56% lipid peroxidation at $200\;{\mu}g$/mL. Furthermore, MLT exhibits the potent anti-proliferative activity which inhibited 56.94%, 35.73% growth of HT-29 and Hela cell at $200\;{\mu}g$/mL respectively. It showed that the antioxidant activities of MLT were correlated with its total phenolic and flavonoid contents. However further study need to be exploring in the future.

• 정보화사회
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• s.152
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• pp.40-48
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• 2001

본 협회에서는 지난 9월 6일 하얏트호텔 튤립룸에서 정보통신부 양승택 장관을 연사로 하여 제 13회 정보통신포럼을 개최했다.이 날 포럼의 주제는 “지식정보강국 건설을 위한 2001년도 정보통신 정책 방향”이었으며, 정부 정책에 대한 관심도를 반영하듯 조정남 SKT 부회장 등 많은 업계 관계자들이 참석하여 성황을 이뤘다. 다음은 이 날 발표됐던 주제를 요약한 것이다.

• Korean Journal of Environment and Ecology
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• v.24 no.5
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• pp.591-600
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• 2010

We estimated and compared C storages and annual $CO_2$ uptakes by 9 dominant tree species planted along the streets. DBH and age by tree species were measured in the sites selected considering the planting status and distributions of tree species, and biomass, C storage, growth rate, and annual $CO_2$ uptake were estimated for each species. As a result, L. tulipifera, M. glyptostroboides, P. occidentalis were classified into fast-growing group, P. serrulata, G. biloba, Z. serrata, S. japonica, A. palmatum showed intermediate growth rates, and P. densiflora was slow-growing. Average C storage per tree was 205kgC/tree and ranged from 518kgC/tree(L. tulipifera) to 41kgC/tree(P. densiflora). Average annual $CO_2$ uptake by urban street trees over their lifespan ranged from $7.6kgCO_2$/tree/y to $99.1kgCO_2$/tree/y and L. tulipifera was the greatest, followed by glyptostroboides and P. occidentalis, and P. densiflora was the lowest. Total annual $CO_2$ uptake by all street trees in Gyeonggi-do, estimated based on the annual $CO_2$ uptake by each species, was as small as approximately 0.67% of that by forest in Gyeonggi-do. However, urban trees are still important because forest area continues to decrease and urbanization occurs annually in Gyeonggi-do, and should be managed considering their multi-functional aspects, including mitigation of heat island effect and building energy saving(indirect $CO_2$ uptake).

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2003.10a
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• pp.152-157
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• 2003

• Asian Journal of Turfgrass Science
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• v.12 no.2
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• pp.93-98
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• 1998

동아시아와 북미에 분포하는 조경수목을 형태적 특성 및 분자생물학적 특성에 따른 연구 결과를 토대로 분류한 결과 8종에서 밀접한 관련성을 갖고 있었다. 자주받침꽃, 능소화, 산딸나무, 보리밥나무, 가래나무, 튤립나무, 일본목련, 잣나무는 동아시아와 북미에서 각각 밀접한 유연성을 가진 종들이 있어 이들을 조경수목쌍으로 분류할 수 있었다. 그리고, 형태적 특성이 매우 흡사한 종으로는 중국단풍나무, 고로쇠, 들메나무, 야광나무, 소나무와 곰솔, 상수리나무, 갈참나무, 떡갈나무, 신갈나무, 굴참나무, 피나무, 참느릅나무 등에서 동아시아와 북미 조경수목쌍이 존재하는 것으로 판단되었다.