• 농업생명과학연구
• /
• 제51권6호
• /
• pp.15-22
• /
• 2017

The microstructure observation of seed surface structure is needed for protocols of breaking dormancy of seeds with physical dormancy. The seeds of Rubus species are surrounded by a thick, hard endocarp; together, the seed and endocarp make up the stone. We evaluate stone characteristics of 18 species of Rubus through optical microscopic observation, and correlate different stone characteristics with endocarp thickness. As a result of stone size comparison, Rubus species were classified as big stones group including R. parvifolius and R. idaeus, small stones group including R. longisepalus var. longisepalus, R. corchorifolius and R. hirsutus, and middle stones group including rest of the species. The result of this study revealed that stone size and the endocarp thickness in Rubus species was various characteristics in each species. Furthermore stone size and stone weight were also well correlated endocarp thickness and result indicated that heavy stones had harder endocarp than lighter one. Thus from the result of this study it can be presumed that only one stone characteristic approach may be sufficient to estimate other characteristics in Rubus.

• Journal of Plant Biotechnology
• /
• 제47권4호
• /
• pp.330-336
• /
• 2020

Ex-situ conservation of the ornamental and medicinal orchid, Coelogyne stricta, was performed by mass propagation using seed culture. Propagation stages were optimized using full- and half-strength solidified MS medium with different phytohormones. Maximum seed germination (88 ± 0.5% over 6 weeks of culture) was achieved on half-strength MS medium supplemented with 15% coconut water. Maximum shoot numbers were found on full-strength MS medium supplemented with 1 mg/L BAP, 2 mg/L Kinetin, and 10% coconut water, while the longest root was developed on full-strength MS medium with 1.5 mg/L IBA. A 2:1:1 combination of coco-peat, pine bark, and sphagnum moss was found to be a suitable potting mixture resulting in 80% seedling survivability. The cytotoxic activity of extracts of both wild plants and in vitro-developed protocorms was determined using an MTT (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide) assay on a cervical cancer cell line. The wild plant extract inhibited the growth of 41.99% of cells, showing that this extract has moderate cytotoxic activity toward cervical cancer cells.

• 한국습지학회지
• /
• 제10권2호
• /
• pp.1-14
• /
• 2008

본 연구에서는 신불산 고산 습지의 식물상 생태조사 결과를 중심으로 지속가능한 습지 생태계 관리와 : 현명한 이용방안을 수립하였다. 총 167종의 식물이 동정되었으며, 그 중 고산 습지식물인 진퍼리새가 우점종으로 규명되었고, 한국특산종인 개족도리, 감소추세종인 끈끈이주걱, 이삭귀개 등이 분포하고 있어 보존의 가치가 높다. 신불산 고산습지 습지 생태계를 보호하기 위해 국가 습지보호지역으로 지정, 습지 보호를 위한 감시 및 단속활동, 지속적인 모니터링 및 현명한 관리를 위한 다양한 방안을 모색하였다.

• 한국디지털건축인테리어학회논문집
• /
• 제11권1호
• /
• pp.33-42
• /
• 2011

As the development of construction technology and new materials, building requirements has been varied gadually. Comfortable environment and serviceability of production activity and energy conservation are being dealt with very seriously. Recently localization of engineering technology of Power Plant, however, construction materials and domestic technology are being developed forcingly. According to above topics this thes is going to study roof waterproofing, thermal insulation and evaluate adiabatic performance and evaluation of properties of waterproofing materials and energy conservation. The results of studying and evaluating of roof waterproofing, thermal insulation and adiabatic performance of Power Plant are as follows. 1. Sheet waterproofing method is better than that of asphalt waterproofing method in that adaptability of wearhertight, thermal resistant, contraction and expansion. 2. It is required to replace polyurethane or ethylene used as thermal insulation with rock wool which is noncombustible materials. 3. It is recommended to usd outer insulation method than inner insulation method due to superioty of outer insulation method. Efficiency of insulation materials used in power plant is generally good except perlite mortar used in the power plant(YGN 1-2, GRI 1-2).

• 한국조경학회지
• /
• 제31권5호
• /
• pp.96-107
• /
• 2003

This study is to establish the Incheon Metropolitan City Arboretum Development Plan (IMADP) as a capacity building both for plant diversity conservation and nature friendly leisure activity areas of Incheon Metropolitan City, Korea. The arboretum planning area is located within territory of the Incheon Grand Park Based on the IMADP, the arboretum was divided into three display spaces; the Urban Greening Garden, the Rare and Endangered Plant Species Garden and the Theme Garden. Detailed planting guidelines were suggested according to the three garden areas. The Urban Greening Garden was designed to display the following three; the relevance techniques, the model, and the practical uses of plants that are regarded to an urban greening. The Rare and Endangered Plant Species Garden (REPSG) was planned for the collection and display of the rare and endangered native plants in the territories of Incheon and the island seashore. Also, the REPSG includes the education purposes of comparing and displaying taxonomically related plant species. The Theme Garden was projected for the collection and display of plant species that have long been familiar to Korean culture and which are also used in our daily life.

• The Plant Pathology Journal
• /
• 제18권5호
• /
• pp.284-287
• /
• 2002

The antifungal activity of super reductive water (SRW) against plant pathogenic fungi was examined to extend its application to integrated pest management (IPM) for plant diseases. Diluted solutions ($\times$1/10, $\times$1/25, and $\times$1/50) of SRW inhibited fungal growth of kiwifruit soft rot pathogen, Diaporthe actinidiae, in a concentration dependent manner, When kiwifruits were inoculated on wounds with mycelium blocks, stock and diluted solutions successfully inhibited the disease development. In addition to the high pH of the SRW, fungistatic activity was also considered as the cause of the antifungal effect against the pathogen. Whereas conidial germination of Magnaporthe grisea was not affected by the diluted SRW solutions, appressorium formation was significantly inhibited in a concentration dependent manner, With little harmfulness to human health and environment SRW could be used to control plant pathogenic fungi, particularly appressorium-forming fungal pathogens.

• Molecules and Cells
• /
• 제26권4호
• /
• pp.368-372
• /
• 2008

Recent molecular and genetic studies in rice, a short-day plant, have elucidated both conservation and divergence of photoperiod pathway genes and their regulators. However, the biological roles of rice genes that act within the autonomous pathway are still largely unknown. In order to better understand the function of the autonomous pathway genes in rice, we conducted molecular genetic analyses of OsFVE, a rice gene homologous to Arabidopsis FVE. OsFVE was found to be ubiquitously expressed in vegetative and reproductive organs. Overexpression of OsFVE could rescue the flowering time phenotype of the Arabidopsis fve mutants by up-regulating expression of the SUPPRESSOR OF OVEREXPRESSION OF CO1 (SOC1) and down-regulating FLOWERING LOCUS C (FLC) expression. These results suggest that there may be a conserved function between OsFVE and FVE in the control of flowering time. However, OsFVE overexpression in the fve mutants did not rescue the flowering time phenotype in in relation to the response to intermittent cold treatment.

• 생태와환경
• /
• 제47권3호
• /
• pp.176-185
• /
• 2014

멸종위기종이며 식물지리학적으로 중요 종임에도 불구하고, 천연기념물 제191호 한란의 개체군 생태에 관한 연구는 우리나라에서 수행된 바 없다. 본 연구는 2013년 10월부터 2014년 2월까지 제주특별자치도 서귀포시 상효동 돈내코 계곡과 접한 한란 자생지의 환경 개체군 구조 및 미세 석시처 선호성을 분석하였다. 조사지역 (1.25 ha)에서 총 1,237 (989.6개체 $ha^{-1}$)개체의 한란을 관찰하였으며, 위인경 (pseudobulb)은 모두 4,341개, 그리고 17개체 (1.4%)에서 개화를 확인하였다. 전체 개체 중 60.9%에서 잎마름 및 반점 등의 병징이 관찰되었다. 엽면적의 경우 전체적으로 소형 개체가 가장 많고, 준중형, 중형, 준대형 및 대형의 순으로 많은 역-J자 형태로 나타났다. 한란의 크기 (위인경 수 $r_s$=-0.159, 잎 수 $r_s$=-0.148, 그리고 엽면적 $r_s$=-0.114)는 토양온도와 약하지만 유의한(p<0.0001) 음의상관을 나타내었다. 한란은 거의 모든 개체 (95.4%)가 구실잣밤나무 아래에서 자라고 있었으며, 공간적으로 모여서 자라는 특성을 나타내었다. 연구 지역에 나타난 한란 개체군 특성은 종의 서식처 선호성과 자생지의 천이 진행에 의한 것으로 생각된다. 본 연구를 통하여 한란 자생지 모니터링 기반을 마련하였으며, 개체군 특성에 기초한 보전방안을 논의 하였다.

• 한국자원식물학회지
• /
• 제13권3호
• /
• pp.208-212
• /
• 2000

보온 피복재 종류가 자옥 포도 유목의 월동시 동해방지, 노동력 절감 및 병해 발생 억제에 미치는 영향을 구명하기 위하여 11월 하순에 짚을 덮은 다음 보온덮개B, 킬딩, 칼라부직A 및 백색니들펀칭부직포 등을 피복하여 시험한 결과를 요약하면 다음과 같다. 1. 보온력은 백색니들펀칭부직포가 가장 불량하였고, 다른 보온재간에는 차이가 미미하였다. 2. 발아는 보온덮개B에서 빨리 시작되었으며, 발아 9일 후에도 발아율이 79.7%로 타 보온재 보다 2.3∼12.5% 높았다. 3. 생육은 보온재간에 차이가 없었으며, 병해 발생은 킬딩과 보온덮개B에서 뿌리혹병이 지수 3.0∼3.2로 다소 많이 발생되었을 뿐 기타 병해는 처리간에 차이가 없거나 미미 하였다. 4. 작업 단계별 소요노력은 보온덮개B에 비하여 킬딩은 6% 많았으나, 칼라부직A는 6%, 백색니들펀칭 부직포는 15%적었다.

• 식물분류학회지
• /
• 제50권3호
• /
• pp.279-317
• /
• 2020

본 연구는 경상북도 울진군과 영양군에 위치한 왕피천유역 생태·경관보호지역의 비관속 선태식물상 및 관속식물상을 조사하여 보전 및 지속가능한 관리방안을 수립하는데 기여하고자 하였다. 2016년 11월부터 2017년 10월까지 계절별 현지조사를 수행하였다. 조사 결과 왕피천유역의 육상식물은 총 164과 455속 698종 10아종 47변종 3품종으로 총 758분류군을 확인하였다. 이 중 비관속 선태식물은 46과 88속 120종 2변종으로 총 122분류군이며, 관속식물은 118과 367속 578종 10아종 45변종 3품종으로 총 636분류군이였고, 자생식물은 693분류군으로 집계되었다. 식물구계학적 특정식물은 총 113분류군으로 V등급 1분류군, IV등급 6분류군, III등급 31분류군, II등급 38분류군, I등급 37분류군을 확인하였다. 한반도 고유종은 덕우기름나물을 비롯한 9분류군이며, 희귀식물은 2분류군, 기후변화에 취약한 북방계 15분류군과 남방계 1분류군이 확인되었다. 귀화식물은 46분류군, 생태계교란식물은 5분류군이 조사되었다. 본 연구의 결과는 보전이 필요한 종들을 제시하며, 왕피천 생태경관보전지역의 보전 및 관리를 위한 기초자료로 사용될 것이다.