• 한국자원식물학회지
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• 제17권1호
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• pp.41-42
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• 2004

제주도에는 2,100종류의 식물이 자라고(양과 송, 2002)있으나, 근래에 소황금(Scutellaria orthocalyx)이 확인되어 한국 미기록 식물로 보고하는 바이다.

• Journal of Plant Biotechnology
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• 제42권1호
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• pp.6-12
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• 2015

Medicinal plants resources are becoming important assets since their usages have been expanded to the development of functional foods for human health, more attractive cosmetics, and pharmaceutical industries. However, their phylogenetic origins and names are different from each country and quite often they are mixed each other resulting in the confusion for consumers. In particular, when they are very similar based on their morphological characteristics and distributed as dried roots, it is extremely difficult to differentiate their origins even by specialists. Recently, "DNA barcodes" have been extensively applied to identify their origin of medicinal plant species. In this review, we tried to overview the current research achievements for the development of suitable "DNA barcodes" regarding to the differentiation of medicinal plant species. Furthermore, more advanced techniques including amplification refractory mutation system (ARMS)-PCR, multiplex single base extension (MSBE), high-resolution melting (HRM) curve analyses are also discussed for their practical applications in the authentification of particular medicinal plant species.

• Plant Resources
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• 제5권1호
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• pp.1-6
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• 2002

Genetic improvement of the cultivated soybean [Glycine max (L.) Merr] may be possible through hybridization with its wild progenitor, G. soja Sieb. & Zucc. Interspecific cross between G. max (Hwangkeumkong) and G. soja (IT.182932) was made in the summer of 1997. In F$_2$ the percentage of plant height, nodes per plant, and pods per plant were high but gradually reduced from F$_2$ to F$_4$. In contrast pod length, seeds per pod, and 100-seeds weight were increased gradually through generations advanced. Wild variation as evident in F$_2$ in plant height, number of branches, pods per plant, and 100-seeds weight. Twenty six percent of the F$_2$, 44 % of the F$_3$ and 60% of the F$_4$ segregants showed more G. max traits. The combination of useful traits from both species is possible through interspecific hybridization. The characters that could be transferred from wild species to cultivated species are more pod number, better capacity, and resistance to disease and insects. The interspecific derivatives offer scope for selection for high grain yield. Therefore, introducing genes from G. soja to G. max could be contribute to greater genetic diversity of future cultivars. And semicultivated soybean had some desired characteristics including tolerance to adverse environments and multi-seed characters. It means the infusing of semicultivated germplasm to the cultivated soybean could increase number of seeds and pods per plant significantly, and consequently could enhance selecting potential on yield.

• 환경생물
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• 제28권1호
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• pp.1-7
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• 2010

Small wetlands in an upland matrix can support diverse vegetation composition that increase both local and regional species richness. In this study we characterize the full range of wetland vegetation in an upland forest landscape at Dumyeong-ri, Gijang-gun, Busan. This wetland index can be calculated with species data, or with community type data as performed. Classified community types were used to describe vegetation at three wetlands and adjacent areas. The communities contained 28 species of vascular plants and 28 species were identified four plant community types. The Pinus densiflora type was dominated by Pinus densiflora and contained only four species. None of the plots had high proportion of standing water. The Carpinus laxiflora type had high obligate upland species (OU) and facultative upland species (FU). The Rhododendron mucronulatum type grew in over half of the plots included Pinus densiflora and Alnus japonica. Some species bother swampy areas adjacent to site C. The Miscanthus sacchariflorus type consisted of seasonal wetlands. The three sites contained nine species with the strongest indicator species being Miscanthus sinensis var. purpurascens, Miscanthus sinensis, Echinochloa crus-galli, and Sagittaria aginashi. This type had the highest proportions of obligate wetland species. Plant species richness averaged 5.069. Shannon-Weaver index of diversity also varied among the community types (F=22.7, df=4, 115), with the types FU having significantly higher value (2.746) than the others (1.057 for type FW and 1.600 for type OU). Regional plans including all of the diverse types of wetland vegetation in upland forests will contribute substantially to the conservation of plant diversity.

• 식물분류학회지
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• 제47권2호
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• pp.124-131
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• 2017

Species identification is a fundamental and routine process in plant systematics, and linguistic-based dichotomous keys are widely used in the identification process. Recently, novel tools for species identification have been developed to improve the accuracy, ease to use, and accessibility related to these tasks for a broad range of users given the advances in information and communications technology. A visual identification key is such an approach, in which couplets consist of images of plants or a part of a plant instead of botanical terminology. We developed a visual identification key for 101 taxa of Orchidaceae in Korea and evaluated its performance. It uses short statements for image couplets to avoid misinterpretations by users. The key at the initial steps (couplets) uses relatively easy characters that can be determined with the naked eye. The final steps of the visual key provide images of species and information about distributions and flowering times to determine the species that best fit the available information. The number of steps required to identify a species varies, ranging from three to ten with an average of 4.5. A performance test with senior college students showed that species were accurately identified using the visual key at a rate significantly higher than when using a linguistic-based dichotomous key and a color manual. The findings presented here suggest that the proposed visual identification key is a useful tool for the teaching of biodiversity at schools, for the monitoring of ecosystems by citizens, and in other areas that require rapid, easy, and accurate identifications of species.

• 한국환경생태학회지
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• 제22권2호
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• pp.138-144
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• 2008

환경부 식물구계학적 특정식물 종 중 IV등급 2종과 V등급 종은 5종으로 총 7종이 확인 되었다. 멸종위기 II급종은 미선나무(Abeliophyllum distichum) 1종이 조사 되었으며, 그 외 산림청이 지정한 희귀식물은 5종이었다. 북한산은 남부형 식물인 서어나무, 산딸나무, 때죽나무 및 초피나무 등의 북한계 선상에 위치하는 종들이 분포하는 국립공원으로 식물지리학적으로 중요하며, 확인된 소산식물은 103과 362속 541종 87변종 10품종으로 총 638종류이었다. 귀화식물은 총 16과 52속 54종 4변종 58종류로 귀화율은 9.09%, 도시화지수는 20.21%로 나타났다.

• 생태와환경
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• 제56권4호
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• pp.363-374
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• 2023

우리나라를 대표하는 생물종 풍부도를 도출하는 데에는 상대적으로 짧은 생물종 현장 조사 역사와 여러 기관에서 분야별로 수집한 조사 자료가 산재되어 있다는 한계가 있다. 본 연구에서는 환경부 산하기관들이 보유하고 있는 관속식물 조사 데이터를 취합하여 100년 이상의 시계열 데이터세트를 구축하였다. 자료 통합은 종명, 위치, 시간(연도) 등 최소한의 기준을 적용해 데이터 검증 및 보정 과정을 거쳤다. 통합한 식물종 자료에 따르면 국내 식물종에 대한 체계적인 수집은 2000년 이후에 주로 이루어졌으며, 이러한 조사를 통해 발견된 식물종의 수는 최근 수렴하는 경향을 보이고 있었다. 이는 우리나라에서 국가 차원의 생물종 다양성을 도출할 수 있는 조건이 충분히 갖추어지고 있음을 시사한다. Chao 2 방법을 이용하여 예측한 1951년부터 70년간의 토착식물의 종 풍부도는 3,182.6으로 추정되었다. 이 추정치를 얻기 위해서는 최소 7년의 누적 기간이 필요하다. 본 연구의 식물종 풍부도는 향후 우리나라의 종 풍부도 변화를 연구하는데 기준이 될 수 있다. 또한 사용한 종 풍부도 추정 방법과 통합자료는 지자체 수준 등의 지역 생물다양성을 도출하는 데에도 적용할 수 있을 것으로 생각한다.

• 식품보건융합연구
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• 제4권4호
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• pp.26-30
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• 2018

To have more insight into the nature of plant, plant scientists carry out phytosociological studies on such plant species. The phytosociological studies on Tridax procumbens. Linn was carried out at Imo State University, Owerri, Imo State between the months of July and September, 2018. Tridax procumbens Linn grows abundantly in the areas under tropical climate and supported by a sandy-loam soil. Morphological features showed a range of variations. Phytosociological investigation showed a Tridax- Mitracarpus-Digitaria plant community. Tridax procumbens was positively associated with Digitaria horizontalis, Mitracarpus scarber and Vernonia cinera. The Inter-relationship of T. Procumbens was thus determined. This study therefore is a contribution to the general ecology of the plant. Phytosociological studies helps plant scientist to have more knowledge into the nature of plant species. This study is a contribution to the general ecology of the plant Tridax procumbens. The study also shows that it has close association with mitracarpus Scarber and Digitaria horizontalis. More work should be carried out to find out if these plant species flower and produce seeds at the same time or not.

• 한국환경생태학회지
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• 제26권5호
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• pp.635-653
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• 2012

제주시 지역 18개 오름의 관속식물은 116과 301속 359종 3아종 78변종 및 14품종으로 총 454분류군으로 조사되었다. 조사된 오름은 해발 800m 이내로 상록수림은 분포하지 않고 곰솔림이나 삼나무와 편백 조림지가 많았다. 제주시지역 18개 오름의 고유종은 개족도리풀, 새끼노루귀, 벌깨냉이 등 14종이 확인되었다. 식물구계학적 특정식물은 총 116분류군으로, V등급종은 목련, 한라돌쩌귀, 갯취 등 6종, IV등급종은 섬딸기, 버들쥐똥나무, 청피사초 등 16종, III등급종은 붓순나무, 등수국, 가시복분자딸기 등 37종, II등급종은 참개별꽃, 돌양지꽃, 회목나무 등 6종 그리고 I등급종은 바위고사리, 봉의꼬리, 후박나무 등 51종이 확인되었다. 산림청 희귀종은 개족도리풀, 한라돌쩌귀 및 목련 등 11종이었다. 귀화식물은 애기수영, 서양금혼초, 등심붓꽃 등 31분류군이 확인되었다.

• Journal of Ecology and Environment
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• 제31권4호
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• pp.277-290
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• 2008

In the past two decades Mikania micrantha Kunth, a climbing plant species originating from tropical America, has spread across Taiwan. It can now be found frequently in the lowlands and lower mountain areas up to 1,000 m a.s.l. in the centre and south of the island. Mikania micrantha is considered a problematic invasive alien plant species which is said to cause economical as well as environmental damage. This study investigated the ecological site characteristics of M. micrantha in Taiwan. 112 vegetation surveys were carried out in habitats where the alien plant was present. A comparison between sites with a high and a low abundance was carried out in order to assess which factors especially influence the extensive spread of the plant. Furthermore, the influence of disturbances was examined. Results showed that Mikania micrantha grows very dense in habitats which are characterized by good light conditions combined with vertical structures, such as trees. Results revealed that this invader occurs most frequently in agricultural fallows and wastelands, but it could hardly be found in the intensively managed plantations in the investigation area. Results provide great evidence that the plant is strongly influenced by disturbances, but only if impacts occur rarely.