• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.17-17
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• 2019

진퍼리사초는 한반도 중부 이북에 분포하고, 군락 자생지는 강원도 동해안 석호 주변 모래땅 1곳인 것으로 보고되고 있다. 따라서 본 연구는 진퍼리사초 현지외보전을 위한 대량증식 연구의 일환으로 가장 효과적인 파종 시기를 구명하고자 수행하였다. 종자의 최적 발아조건을 찾기 위해 배양상 온도조건을 항온(30, 25, 20, 15, $5^{\circ}C$)과 변온(15/30, 20/10, $25/15^{\circ}C$) 총 8가지 조건으로 설정하여 발아율을 매일 측정하였다. 광조건은 명/암을 매일 12시간씩 반복하였으며 모든 실험은 국립백두대간수목원 발아실험실의 생장상에서 진행하였다. 실험결과, 항온조건에서 발아율은 $30^{\circ}C$에서 $39{\pm}7.5%$로 가장 높게 나타났고, $20^{\circ}C$ ($28{\pm}4.3%$), $25^{\circ}C$ ($24{\pm}3.7%$) 순으로 나타났으며, $15^{\circ}C$, $5^{\circ}C$에서는 발아하지 않았다. 한편, 변온조건에서의 발아율은 $25/15^{\circ}C$에서 $60{\pm}5.9%$로 가장 높게 나타났고, $15/30^{\circ}C$ ($43{\pm}4.1%$), $20/10^{\circ}C$ ($26{\pm}3.8%$) 순으로 나타났다. 따라서 진퍼리사초의 종자 발아는 항온보다 변온에서 잘 이루어졌으며, $25^{\circ}C$이상의 온도가 효과적인 것으로 나타났다. 이러한 결과를 바탕으로 가장 효과적인 파종 시기를 추정할 때, 낮 기온이 평균 $25^{\circ}C$이상이며, 일교차가 $10^{\circ}C$ 정도인 초여름이 가장 적절할 것으로 여겨진다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.18-18
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• 2019

층실사초는 경북 북부를 포함한 강원도 지역의 습기있는 음지에서 자생한다. 여러해살이풀로서 주료 사료용으로 사용되며 지피식물 등 정원소재로도 사용된다. 본 연구는 층실사초의 대량증식을 위해 가장 효과적인 파종 시기를 구명하고자 수행하였다. 종자의 최적 발아조건을 찾기 위해 배양상 온도조건을 항온조건(30, 25, 20, 15, $5^{\circ}C$)과 변온조건(15/30, 20/10, $25/15^{\circ}C$) 총 8가지 조건으로 설정하여 발아율을 매일 측정하였다. 광조건은 형광등을 이용한 명조건과 암조건을 매일 12시간씩 반복하였다. 실험결과, 항온조건에서 발아율은 $25^{\circ}C$에서 $36{\pm}6.3%$로 가장 높게 나타났고, $20^{\circ}C$ ($27{\pm}4.4%$), $30^{\circ}C$ ($24{\pm}1.6%$) 순으로 나타났으며, $15^{\circ}C$, $5^{\circ}C$에서는 발아하지 않았다. 한편, 변온조건에서의 발아율은 $25/15^{\circ}C$에서 $22{\pm}7.3%$, $15/30^{\circ}C$에서 $10{\pm}2.5%$ 발아하였고, $20/10^{\circ}C$에서는 발아하지 않았다. 따라서 층실사초 종자의 발아최적온도는 $25^{\circ}C$이고 변온보다 항온이 유리했으며, 이 이상의 온도에서는 오히려 발아율이 낮아지는 것으로 나타났다. 이러한 결과를 바탕으로 가장 효과적인 파종 시기를 추정할 때, 낮 기온 $25^{\circ}C$의 초여름에 실시하되, 밤 기온이 너무 내려가지 않도록 조절해준다면 보다 높은 발아율을 기대할 수 있을 것으로 여겨진다. 그러나 본 연구결과, 최고 발아율이 $36{\pm}6.3%$로 비교적 낮기 때문에 발아율 향상을 위한 추가적인 실험이 필요할 것이다.

• Journal of Forest and Environmental Science
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• v.28 no.1
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• pp.37-45
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• 2012

A study surveyed to visitor's user behavior and importance-satisfaction in the Provicial Wando-arboretum. As the results of the research, Most of the visitors are 40s and 50s and live in Jeonnam Region, Gwang-ju. The purpose of their visit was recreation, leisure or experience of a warm-temperate forest. Also the mean of importance was 3.94 and the mean of satisfaction was 3.51 in the Wando-arboretum. It appeared necessary for items of program development, homepage management and amenities including public toilet. The research results are expected to suggest efficient management measures. And expects with the research result that will be the possibility of raising the qualitative satisfaction of the visitor.

• Journal of Plant Biotechnology
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• v.47 no.2
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• pp.150-156
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• 2020

Weeds play an important role in the survival of viruses and are potential inoculum sources of viral diseases for crop plants. In this study, specimens of Pseudostellaria heterophylla exhibiting symptoms of the cucumber mosaic virus (CMV) were collected in Bonghwa, Korea. The characteristics of the disease were described and leaf RNA was extracted and sequenced to identify the virus. Three CMV contigs were obtained and PCR was performed using specific primer pairs. RNA from positive samples exhibiting CMV leaf symptoms was amplified to determine the coat protein. A sequence comparison of the coat protein gene from the CMV BH isolate shared the highest nucleotide identity (99.2%) with the CMV ZM isolate. Phylogenetic analysis showed that CMV-BH belonged to subgroup IA and that the most closely-related isolate was CMV-ZM. All test plants used for the biological assay were successfully infected with CMV and exhibited CMV disease symptoms such as blistering, mosaic, and vein yellowing. To our knowledge, this is the first report of CMV infection in P. heterophylla from Korea.

• Korean Journal of Plant Taxonomy
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• v.42 no.1
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• pp.76-79
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• 2012

An unrecorded species, Poa tuberifera Faurie ex Hack., was found in Saryeoni forest, Jocheon-eup, Jeju-si, Jeju-do. It can be distinguished from P. acroleuca Steud. and P. acroleuca var. submoniliformis Makino by its morphological characteristics, with panicle branches bearing sparse spikelets and lemmas not wavy-haired at the base. P. tuberifera is known to be an endemic plant of Japan, but its distribution in South Korea is confirmed through the present study.

• Journal of the Korean Institute of Landscape Architecture
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• v.31 no.5
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• pp.96-107
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• 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.

• Mycobiology
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• v.47 no.4
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• pp.355-367
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• 2019

Arthonia dokdoensis sp. nov., a lichenicolous fungus from the subcosmopolitan Arthonia molendoi complex growing on crustose thalli of species of the genus Orientophila (subfamily Xanthorioideae, Teloschistaceae), as well as the lichen species Rufoplaca toktoana sp. nov. (subfamily Caloplacoideae, Teloschistaceae) similar to Rufoplaca kaernefeltiana, both from Dokdo Islands, Republic of Korea, are described, illustrated, and compared with closely related taxa. In the phylogenetic tree of the Arthoniaceae based on 12S mtSSU and RPB2 gene sequences, the phylogenetic position of the A. dokdoensis and the relationship with the A. molendoi group are illustrated, while the position of the newly described R. toktoana is confirmed by phylogenetic tree based on ITS nrDNA data.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.13 no.2
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• pp.52-62
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• 2010

This study was carried out in the Tropical Plant Resources Research Center of Korea National Arboretum to determine the optimum edaphic environment for the growth of tropical and subtropical plants. The physicochemical properties of artificial substrates and the growth characteristics of tropical and subtropical plants were investigated. Subtropical plants exhibited a high growth rate when cultivated in a substrate of Dry Zone that had physical properties similar to those of arid native soil. Mediterranean plants showed a low growth rate when grown in a substrate of Subtropical Zone that required changes in acidity. The substrate of Tropical Zone had high organic matter and mineral contents and therefore had good physical properties:this substrate has a good environment for the stimulation of the growth of tropical plants. Our results indicate that the chemical properties such as pH and mineral contents of most artificial substrates need to be more urgently improved than their physical properties in order to ensure better growth of tropical and subtropical plants. Initial management strategies for the construction of new tropical greenhouses were formulated, and data from monitoring studies will be continuously gathered and incorporated in the manual to keep it updated.

• Korean Journal of Plant Taxonomy
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• v.41 no.2
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• pp.164-170
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• 2011

Two naturalized plants (Euphorbiaceae) were recorded from Busan Metropolitan City and from the Jeju Special Self-Governing Province. Euphorbia heterophylla L. (A-me-ri-ka-dae-geuk) was found in a park near Suyeong-gang, Allak-dong, Dongnae-gu, in Busan Metropolitan City. This species is distinguished from E. dentata by its alternating leaves of main stem and glands of involucres with a circular opening. Euphorbia hirta L. (Teol-ttang-bin-dae) was found in Yerae village, Yerae-dong, Seogwipo-si, in Jeju Special Self-Governing Province. It is distinguished from E. hypericifolia as it has capsules with hairs.

• Mycobiology
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• v.41 no.4
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• pp.183-190
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• 2013

Amanita Pers. is a well-known monophyletic mushroom genus with a broad distribution. However, the diversity of Korean Amanita species has been underestimated, and most taxonomic studies conducted in Korea have only investigated their morphological characteristics. This approach is frequently insufficient for correct identification in fungal classification; therefore, we constructed a phylogeny of Amanita subgen. Lepidella in order to understand the phylogenetic placements of 16 Amanita specimens collected in Korea in 2012. The phylogeny constructed using the sequence data of the internal transcribed spacers and the partial large subunit of ribosomal RNA identified nine Amanita species (A. citrina, A. excelsa var. spissa, A. flavipes, A. fritillaria, A. oberwinklerana, A. pallidorosea, A. rubescens, A. subjunquillea, and A. volvata); of these, A. fritillaria, A. oberwinklerana, and A. pallidorosea are new to Korea.