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Aldose reductase inhibitory activity of the methanol extracts from Korean folk plants
김혜민,한샘,최경,구자정,박광우,조은주,이상현,Kim, Hye-Min,Han, Saem,Choi, Kyung,Ku, Ja-Jung,Park, Kwang-Woo,Cho, Eun-Ju,Lee, Sang-Hyun Institute of Agricultural Science 2012 Korean Journal of Agricultural Science Vol.39 No.2
To search for the aldose reductase (AR) inhibitors from Korean folk plants, the inhibition of rat lens AR in vitro using the methanol (MeOH) extracts from Korean folk plants was investigated. Among fifty four Korean folk plants tested, the MeOH extract of Cedrela sinensis showed highest inhibition of AR ($IC_{50}$ value, 2.52 ${\mu}g/ml$). The plant C. sinensis has a possibility of new natural resources for the development of AR inhibitor for the prevention of diabetic complications.
임효인,채승범,이선욱,구자정,Lim, Hyo-In,Chae, Seung-Beom,Lee, Seon-Uk,Ku, Ja-Jung The Korea Society of Environmental Restoration Tec 2020 한국환경복원기술학회지 Vol.23 No.4
In this study, the effects of windbreak fences composed of natural vegetation on one-year-old seedlings were analyzed to develop restoration methods for an endangered subalpine species, the dwarf Siberian pine (Pinus pumila (Pall.) Regel). One-year-old seedlings were planted in 2016 by sowing seeds that had been collected from the Daecheongbong area on Mt. Seoraksan, South Korea, in 2014. The area near Daecheongbong was selected as the experimental site, and treatment and control plots (2m×2m) were installed at the site. To analyze the effects of wind protection, windbreak fences were constructed in the treatment plots using hairy Korean rhododendrons (Rhododendron mucronulatum Turcz. var. ciliatum Nakai) from the surrounding area and weather stations were installed to investigate atmospheric temperature, humidity, and wind speed. In all control plots without windbreak fences, dwarf Siberian pine seedlings were killed by strong winds seven months after planting. In contrast, the average survival rate of the seedlings in treatment plots was 96.7% after seven months, 64.2% after two years, and 45% after three years, with most (85.3%) of the seedlings showing good initial root establishment. Accordingly, windbreak fences composed of natural vegetation are suitable for promoting the early establishment of seedlings in the restoration of dwarf Siberian pine stands.
섬국수나무와 섬괴불나무의 삽목증식에 미치는 토양 및 PGRs 처리 효과
이수광 ( Su Gwang Lee ),이동준 ( Dong Jun Lee ),김효연 ( Hyo Yeon Kim ),구자정 ( Ja Jung Ku ),김현준 ( Hyeon Jun Kim ),정회석 ( Hea Seok Jeong ),신운섭 ( Un Seop Shin ),이기철 ( Ki Cheol Lee ),김현진 ( Hyun Jin Kim ),김성식 ( Sung 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-
본 연구는 희귀식물 섬국수나무(Physocarpus insularis (Nakai) Nakai)와 섬괴불나무(Lonicera insularis Nakai)의 삽목증식에 미치는 토양 및 PGRs의 영향을 살펴보기 위해 수행되었다. 삽목토양은 녹소토와 펄라이트로 달리하였으며, PGRs는 IBA, NAA 100 ppm 한 시간 침지처리, 그리고 루톤분말 처리의 4가지를 달리하였다. 그 결과 섬국수나무는 녹소토 대조구와 루톤 처리구에서 29%의 가장 높은 발근율을 나타내었다. 또한 대조구에서 뿌리수(4.1개), 뿌리길이(5.8 cm) 및 지하생중량(33mg)이 가장 우수하게 나타나 섬국수나무의 삽목증식에는 PGRs처리가 부정적인 영향을 미치는 것으로 생각된다. 반면 섬괴불나무는 녹소토 조건에서 대조구(25%)에 비해 NAA 침지처리(82%)시 발근율이 유의적으로 향상된 결과를 나타내었다. 특히 NAA 100 ppm 침지처리시 뿌리수(7.3개), 뿌리길이(16.9 cm) 및 지하생중량(195 mg)이 가장 우수하게 나타나 녹소토 조건과 NAA 100 ppm 침지처리가 섬괴불나무 삽목증식에 적합한 처리조건인 것으로 판단된다. This study was conducted to investigate the propagation characteristics of Physocarpus insularis (Nakai) Nakai and Lonicera insularis Nakai. The treatment of rooting soil type(Kanumatsuchi, perlite) and PGRs(Rootone, 100 ppm of IBA or NAA). As a result, the highest rooting rate(29%) of P. insularis was obtained from the control and rootone in Kanumatsuchi. And best quality of cutting growth characteristics of P. insularis under control with number of root(4.1), root length(5.8 cm) and root weight(33 mg). Therefore, PGRs were negative effects on cutting of P. insularis. On the other hand, 100 ppm NAA treatment showed the highest rooting rate(82%) than control(25%) of L. insularis with cutting growth characteristics of the number of root(7.3), root length(16.9 cm) and root weight(195 mg) in Kanumatsuchi. A result indicated that treatment 100 ppm NAA and Kanumatsuchi were best treatment in increasing percentage of rooting and other cutting growth characteristics of L. insularis.
김현지 ( Hyun Ji Kim ),정혜란 ( Hye Ran Jeong ),구자정 ( Ja Jung Ku ),최경 ( Kyung Choi ),박광우 ( Kwang Woo Park ),조도순 ( Do Soon Cho ) 한국환경생물학회 2012 환경생물 : 환경생물학회지 Vol.30 No.2
본 연구는 한국 특산식물인 변산바람꽃(Eranthis byunsanensis B.Y. Sun)의 분포현황 및 서식지에 대한 생태적 특성과 식생에 대해 조사하고 분석함으로써 향후 자생식물을 활용한 자원화 및 보전과 복원의 기초 자료로 활용하고자 수행되었다. 조사는 2010년 2월부터 7월까지 변산, 여수, 거제, 울산, 경주, 제주, 안양 등 7개 지역에서 수행되었다. 각 지역에 1m×1m의 방형구를 총 59개 설치하고 방형구 내에 분포하는 모든 종의 피도와 빈도를 기록하였고, 상층부 교목의 우점종을 기록하고 서식지의 환경특성을 조사하였다. 조사 결과 변산바람꽃은 해발 84m~585 m 사이에 분포하였고, 총 59개 방형구 중 43개의 방형구가 북동사면에 위치하였다. 또한 경사 10~20˚의 계곡을 따라 불연속적으로 분포하였으며 토양분석결과 유기물은 평균 9.6%, pH는 4.9로 대부분 약산성이며 토양수분함량은 평균 16.5%로 나타났다. 고도에 대해 경사는 음의 상관관계를 보여 고도가 낮아질수록 경사가 완만해지며, 토양은 산성을 띄는 경향을 보였다. pH와 토양수분 함량, 변산바람꽃의 분포와 유기물은 정의 상관관계를 보여 수분이 풍부하고, 영양분의 공급이 원활한 지역을 선호하는 것으로 나타났다. 총 59개 방형구에서 144개 분류군이 나타났으며 서식지 주변의 교목으로서 고로쇠나무와 까치박달나무, 비목나무, 서어 나무 등이 높은 빈도로 출현하였다. 이 연구 결과는 한국 특산식물인 변산바람꽃의 자생지 보전 및 복원의 자료로 활용할 수 있을 것이며, 변산바람꽃을 활용한 분화용 소재개발 및 재배 시 최적의 서식환경에 대한 정보를 제공할 수 있을 것으로 판단된다. Environmental characteristics and vegetation of the natural habitats of Eranthis byunsanensis B.Y. Sun were investigated in order to provide the basic data for conservation, restoration, and utilization of this Korean endemic plant. This study was conducted in Anyang, Byeonsan, Geoje, Gyeongju, Jeju, Ulsan and Yeosu. E. byunsanensis was distributed around the altitudes of 84~~585 m with a slope degree of 10~~20, and mostly formed discontinuous populations in north-east part of valleys. Soil analysis showed the mean organic matter of 9.6% and a slightly acidic pH (mean pH of 4.9). The mean gravimetric water content was 16.5%. Correlation coefficients between environmental factors and community characteristics suggested that there was a positive correlation between slope degree and soil water content, between slope degree and soil pH, between soil organic matter and importance value, and between species richness or evenness and species diversity. The vascular plants from 59 quadrats of 7 habitats were identified into 144 taxa. A few species were dominants and similarly distributed in Byeonsan, Jeju, Ulsan and Yeosu. The highest species diversity was found in Geoje (1.43), while Anyang showed the lowest (0.87). Species evenness of Gyeongju and Jeju was bigger than 0.8, but that of Geoje was the lowest (0.59). Dominant species of woody plants in and around the 59 plots were represented by high frequency of Acer pictum subsp. mono, Carpinus cordata, Lindera obtusiloba, and Carpinus laxiflora. The results of this study can provide useful data for conservation and restoration of natural habitats of Korean endemic Eranthis byunsanensis and for the development and growth of this species for ornamental purposes.