• Korean Journal of Food Science and Technology
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• v.35 no.3
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• pp.373-378
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• 2003

This research was conducted to investigate the possibilities of usage of rose (Rosa hybrida L. cv. Mary Devor) by examining th antioxidative and antimicrobial activities of extracts with various levels of ethanol concentrates. Proximate composition, dietary fiber, and flavonoids contents were analyzed, and total antioxidant status and yield ratios of extraction of rose were measured. The rose extracts were extracted in different level of ethanol concentrates (0, 75, 85, 95%), and peroxide value, acid value, and TBA value were investigated in different level of concentrates of extracts added and time duration of storage. The results were as follows; derivation period from measuring peroxide value showed that the rose (Petal & Calyces) extract-added group showed longer derivation period than the control group, tocopherol-added, or BHT-added groups, and it proved to be a highly effective antioxidant as a result. It showed the longest derivation period especially when 85% ethanol extract was added with concentration of 0.05%. For the acid values and TBA values of the extract added oil, the rose extract-added group and BHT-added group showed lower values than the control group and tocopherol-added group as th length of time for storage becomes longer. In fact, the rose extracts suggested the possibility to be used as a natural antioxidants as it showed high antioxidative effect similar to BHT. Overall, the rose extracts from each solvent showed high antimicrobial effects against Escherichia coli, Salmonella typhimurium, Staphylococcus aureus than control group. Especially, 85% ethanol extract showed significantly high antimicrobial effect against Escherichia coli.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2008.11a
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• pp.173-176
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• 2008

출현한 식물은 총 61과 156종으로 조사되었는데 조사지점의 생육환경으로 볼 때, 출현 종수가 반드시 절토비탈면의 생성년수와 사면면적에 비례하여 출현하는 것만은 아니었다. 가장 출현빈도가 높은 분류군은 국화과로 14.7%이었고, 벼과 8.3%, 콩과 7.1%, 장미과 5.8% 순이었다. 각 조사지점별 우점종은 생성시기가 비교적 짧은 지점에서는 호밀풀, 바랭이 등의 사초과 식물들, 15년 이상의 표토층으로 된 지점에서는 사방오리나무, 아까시나무와 같은 목본류, 암반층으로 된 지점은 칡, 계요등, 송악 등의 덩굴성 식물들이었다. 귀화식물은 모두 13종이 출현하였고, 이에 의한 도시화지수는 4.8%로 환경변화가 비교적 적은 곳으로 조사되었다. Raunkiaer의 생활형으로 분류하면, 목본류 64종(47.5%), 지중식물 43종(27.6%), 1년생 식물 30종(19.2%), 반지중식물 7종(4.5%), 지표식물 2종(1.3%) 순으로 조사되어 식생의 천이가 안정화되어 가고 있음을 보여주었다.

• Korean Journal of Environmental Biology
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• v.27 no.4
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• pp.334-340
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• 2009

In other to know the feeding preference over the degree of ripeness and size of fruits in birds, we gave them to three bird species in breeding condition, counted and analyzed the number of fruits by correspondence ordination technique. Chrysolophus pictus did not show a distinct preference in respect to degree of maturity or size of fruits of among three tree species. Columba rupestris preferred un-ripen fruits over ripen ones of Prunus yedoensis or Elaeagnus multiflora, but did not choose selectively in case of fruits of Malus sieboldii. Pavo muticus showed the reverse favorable pattern of Columba rupestris. Total feeding amounts eaten by birds were dependent on the initial feeding amounts of fruits. These results indicated that in feeding activity some birds chose differently in terms of species or maturity of fruits, but not in fruit size.

• FLOWER RESEARCH JOURNAL
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• v.17 no.4
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• pp.332-335
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• 2009

A new cultivar of Rosa hybrida 'Loving Heart' was developed by crossing Gyeongkyo R-6 and 'Noblesse' at Gumi Floricultural Experiment Station in 2002. Characteristics trials were conducted three times from 2004 to 2007. This cultivar showed dark pink flower color (RHS, Red-purple group 66-B) and standard type with good flower shape. The flower diameter is 10.3cm and the number of petals per flower is 55. Vase life of 'Loving Heart' could be as long as 12.3days. The yield of 'Loving Heart' was $127stems/m^2/year$. 'Loving Heart' has good quality of cut flower and strong vigor in plant growth. This cultivar has straight stems and is easy to culture because of a few prickles on the top of stem. This cultivar is appropriate for both soil and solution(hydroponics) cultures.

• Economic and Environmental Geology
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• v.8 no.2
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• pp.63-71
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• 1975

A new rock name, rhodochrostone is proposed for the sedimentary rock from the Janggun Mine, Korea, which consist mainly of rhodochrosite. Systematic classification of rhodochrositic rocks was made for the rocks of rhodochrosite-calcite-quartz and rhodochrosite-quartz-clay, respectively. According to the writer's new scheme of classification, the manganese carbonate beds of the Janggun Mine, Korea consist mainly of rhodochrostone and siliceous rhodochrostone, with minor clayey siliceous rhodochrostone. The underlying and overlying carbonate rocks consist of high-manganiferous dolostone, moderate-manganiferous dolostone and low-manganiferous dolostone. The same scheme of classification is applicable to the similar manganiferous rocks in other countries. Mineralogical, petrological and chemical studies were made.

• The Korean Journal of Pesticide Science
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• v.5 no.3
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• pp.50-53
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• 2001

Severe crown gall disease was occurred in green house cultivating rose in Jinchen, Chungbuk recently. Although it causes problem on rose cultivation, the growers do not have many choices of control measures for the disease now. Agrobacterium radiobacter K84 has been known as a strong antagonist against A. tumefaciens, a pathogen causing crown gall disease, and used as a biopesticide for crown gall in many countries since it had been introduced in 1972. We tested control activity of A. radiobacter K84 for the crown gall disease on rose. Spray of A. radiobacter K84 suspension on above ground of rose either before or after pathogen spray reduced size and fresh weight of galls significantly. Size and fresh weight of galls on roses inoculated with pathogen either before A. radiobacter K84 spray (pathogen-K84 treatment) or after A. radiobacter K84 spray(K84-pathogen treatment) were 4 to 5% of those of galls on roses inoculated pathogen only. Disease incidence of plants inoculated pathogen only was 85% whereas disease incidence of pathogen-K84 or K84-pathogen treatments were 6.7% and 5.0% respectively. Dipping of roots of rose in suspension of A. radiobacter K84 was also reduced size of galls and diseased rate significantly. These results indicate that A. radiobacter K84 is effective in the prevention of gall formation by A. tumefaciens and it can be used to control of crown gall disease of rose.

• Research in Plant Disease
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• v.25 no.1
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• pp.16-21
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• 2019

Botrytis cinerea is the pathogen for a gray mold generating problems during the cultivation and transportation of roses. But there is little information about the difference of the symptom severity caused by gray mold on rose varieties and pathogen strains. 16 strains were collected from the rose cultivation area to confirm the degree of disease occurrence against strains and each variety. Collected 16 strains were identified based on the sequences analysis of ITS region of ribosomal DNA by using specific primers. The sequence analysis was performed by comparing the sequences to find a difference. To confirm the difference in disease occurrence for each strains, the difference was classified from 0 to 5 stages using charmant variety as a control. The data was confirmed through Kruskal-Wallis ANOVA. The result showed the significant difference in the pathogenicity caused by strains. WNG6_5 showed the lowest pathogenicity with 0.24 and WNG6_3 showed the highest with 3.20. The difference between two strains were almost 3.0. In addition, nine varieties of roses were more investigated with three strains such as the strains of WNG6_5, Hwa_1, and WNG6_3. The result showed that the Love Letter variety showed resistance and the Ice Bear variety was sensitive to three strains. Taken together, this study showed the significant difference by the interactions of rose varieties and gray mold strains.

• Journal of Life Science
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• v.13 no.6
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• pp.889-895
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• 2003

This experiment was carried out to investigate the effect of subirrigation of Dolrido on the growth and development of stem cutting and young roes plant. Plant growth was measured at 20, 40, and 60 days after subirrigation of Dolrido. Plant height, stem diameter, number of leaves, leaf area and root length of cutting rose subirrigation were more affected than those of control. The growth of young seedling was significantly affected by subirrigation of Dolrido. Plant height, number of leaves, stem diameter, leaf area, fresh and dry weight were increased with subirrigation of Dolrido. However, T/R ratio was not affected by subirrigation of Dolrido. Growth of seedlings was promoted after 60 days treatment of Dolrido.

• Landscaping Tree
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• v.81 no.7_8
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• pp.14-17
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• 2004

장미과 식물로 정원수 와 조경수로 많이 식재되고 있는 명자나 무류로 명자꽃, 풀명자, 산당화는 봄날에 주홍색 계통의 꽃망울은 화려하지는 않지만 은은하고, 소박한 시골 아낙네 같은 청초한 느낌을 준다. 여름에는 모과 같이 짙은 향기와 함께 싱그러워서 장식용으로 사용되며 또한 과실주를 담그기도 한다. 맹아력이 강하고 수형을 마음대로 조절할 수가 있어 요즘 유형하는 수벽용 생울타리로 적격이다. 이러한 명자나무류에 피해를 주는 흡즙성해충으로 진딧물로, 깍지벌레류, 방패벌레가 피해를 주고 있어 이들에 대한 생태 및 방제법을 간략하게 소개하고자 한다.

• Proceedings of the Korea Water Resources Association Conference
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• 2004.05b
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• pp.977-981
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• 2004

댐 건설로 인한 인위적인 당류량 조절은 댐 하류지역에서 홍수 피해저감에 기여하고 있지만, 자연적인 유출 리듬이 파괴되며 유속, 수심, 건조지 확대와 같은 수량의 변동과 용존산소량, 영양염류, pH 같은 수질 변화, 그리고 하천 형태의 변화를 가져오게 된다. 하천에서의 생물 서식공간은 산림 등 육지 지역과는 단리 무엇보다 하천의 유체역학적인 영향을 받아 형성되고 발달한다. 인위적인 댐 방류량은 하류지역의 건조 면적을 증가시키기 때문에 하천 형태가 변화하는 결과를 가져오고, 댐 건설로 인하여 자연적인 홍수 유출이 급감하게 되면 건조면적이 확산되어 수변식물과 어류의 서식처 환경 변화를 유발하여 기존의 생태 균형이 파괴될 것으로 예상된다. 지금까지 국내에서 댐 건설로 발생되는 피해를 분석한 연구들을 분석해 보면, 수량 및 수질 변화에 대하여는 많이 제시하고 있지만 생태변화에서는 정량적인 피해를 제시한 연구가 없기 때문에 용담댐 건설로 인한 하류구간의 수변식물과 어류를 대상으로 정량적인 피해를 분석하는 것이 매우 필요하다. 따라서 본 연구에서는 용담댐 건설로 인한 인위적인 유출량 감소가 댐 하류 8km 구간에서 수변식물과 어류에 미치는 영향을 예측하고자 하였으며, 이를 위해 용담댐 기점 약 5km지점(조사지점 I)인 전북 진안군용담댐 감동리 주변지역에서 수변식물과 어류 군집에 내하여 2003년 5월부터 7월까지 3회 조사하였고, 추가로 약 1km지점(조사지점II)인 전북 진안군 용담면 월계리 주변지역에서 수변식물을 중심으로 2003년 9월에서 10월까지 2회 조사하였다. 수변식물은 조사지점(I)인 5km지점에서는 전체적으로 13과 21종으로, 벼과가 4종, 국화과가, 3종, 버드나무과, 콩과, 마디풀과가 2종씩, 바늘꽃과, 속새과, 십자화과, 장미과, 사초과, 삼과, 현삼과, 닭의장풀과가 각 1종씩 조사되었으며, 조사지점(II)인 1km지점에서는 15과 26종으로, 벼과가 4종, 마디풀과, 국화과가 3종, 버드나무과, 십자화과, 콩과가 2종씩, 바늘꽃과, 속새과, 자라풀과, 장미과, 사초과, 백합과, 현삼과, 골풀과, 닭의장풀과가 각 1종씩으로, 조사지점( I )보다 좀 더 많은 종이 분포하는 것으로 조사되었다. 또한 어류는 조사지점( I )에서 3회에 걸쳐 총 396개체가 채집되어 3목 8과 21종이었다. 이 중 한국 고유종은 11종이었고, 외래 어종은 검정우럭과 2종이 조사되었으며, Zacco platypus(피라미), Zacco temmincki(갈겨니), Acheilongnathus koreanus(칼납자루), Odontobutis platycephala(동사리), Coreoleuciscus splendidus(쉬리) 순으로 분포하고 있었고, Acheilognathus signifer(묵납자루)는 댐 건설 전에는 많이 분포하였으나 현장조사에서 서식을 확인 할 수 언어 개체수의 큰 감소내지 멸종된 것으로 추정되었다.