• 제목/요약/키워드: sect

검색결과 171건 처리시간 1.117초

Seed Morphology of Euphorbia Section Anthacantha (Euphorbiaceae) and Related Taxa (대극속 Anthacantha절(대극과)과 근연분류군의 종자형태)

  • Na, Hee-Jung;Park, Ki-Ryong
    • Applied Microscopy
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    • 제40권4호
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    • pp.219-228
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    • 2010
  • The seeds of 16 species from sect. Anthacantha and related taxa were examined using light and scanning electron microscopy to illucidate the boundary of the section and their relationship among species. Using six qualitative characters clustering analyses were conducted, and three types were recognized. Type I including species from sect. Anthacantha+sect. Meleuphorbia is characterized by the ovate shape, rounded at base and smooth along the ventral line. Type II including species from sect. Medusae+sect. Treisia-1 is squared in shape and are tuberculate. Tubercles are prominent along the ventral line. Type III (sect. Treisia-2 group) is mostly rounded, and as in type II, tubercles are prominent along the ventral line, but the unique crestae consisting of the grouping testa cells differed from the surface patterns of Types I and II. Based on the seed morphology, sects. Anthacantha and Meleuphorbia are closely related, which is well supported by the results from molecular and pollen morphological studies. Besides, sects. Treisia and Medusae are not closely related in terms of seed characters, and this is not consistent with the results of recent molecular studies.

Systematics of Korean Thalictrum L. based on a morphological cladistic analysis (형태학적 분계분석에 의한 한국산 꿩의다리속(Thalictrum L.) 식물의 계통학적 연구)

  • Park, Seongjun;Park, Seon-Joo
    • Korean Journal of Plant Taxonomy
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    • 제39권2호
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    • pp.89-99
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    • 2009
  • We used Maximum parsimony and Neighbor-joining to investigate phylogenetic relationship of the genus Thalictrum in Korea with 39 morphological characters. The plant materials were used for ingroup 21 taxa and outgroup 1 taxon including a Korean endemic plant. This study confirmed that Sect. Thalictrum and Sect. Camptonotum formed monophyletic group by 100% and 83% bootstrap values respectively, and Sect. Camptonotum appeared to be Sect. Thalictrum's sister group. Sect. Erythrandra and Sect. Physocarpum formed paraphyletic groups. Sect. Physocarpum except T. osmorhizoides appeared to be polytomy. Sect. Tripterium and Sect. Omalophysa formed an independent clade. The shape of stamen is the important character representing the phylogenetic pattern of the genus Thalictrum; the bat and filiform types might be derived from clavate type. The pollination patterns (entomophily, anemophily), and presence of calyx at flowering time may also be related to the evolution of the Thalictrum flowers.

A Study of Type of Daesoonjinrihoe as a Established Sect and It's Appraisal (종교조직 유형론으로 본 대순진리회 유형 연구)

  • Kim, Hang-je
    • Journal of the Daesoon Academy of Sciences
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    • 제25_1집
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    • pp.87-119
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    • 2015
  • Typology of religious organization is a useful analysis from the stand point of sociology of region. A study on the change of type of religious organization according to typology is a academic responsibility. This study can also make a religion prepare theoretical shape for the future of the religion. Although Daesoonjinrihoe now becomes a established sect, Daesoonjinrihoe should retain characteristics as a alternative sect. This feature as a alternative sect is an important identity of Daesoonjinrihoe which was established to criticize and overcome established sect. Dotongjingyeong is an ideal world of Daesoonjinrihoe. The foundation of Dotongjingyeong as an ideal world is essential value and reason of existence of Daesoonjinrihoe. For this reason, Daesoon jinrihoe should not just maintain its position but lead to reach the Dotongjingyeong here and now. Dotongjingyeong which should be built here and now is beyond Daesoonjinrihoe as a religious organization, because Dotongjingyeong is new heaven and new earth. Daesoonjinrihoe should put an guard against trial and error through change of type. Otherwise, Daesoonjinrihoe can not retain characteristics as an alternative sector. Now Daesoonjinrihoe may be at a revolutionary turning point for the foundation of Dotongjingyeong.

A taxonomic review of Artemisia sect. Absinthium in Korea (한국산 쑥속(Artemisia L.) 산흰쑥절(sect. Absinthium)의 분류학적 재검토)

  • Park, Myung Soon;Chung, Gyu Young
    • Korean Journal of Plant Taxonomy
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    • 제43권3호
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    • pp.188-195
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    • 2013
  • The morphological characters and scientific names of Korean Artemisia sect. Absinthium were reviewed based on the type specimen, the original description, observation of the living materials and voucher specimens. The form of the habitat, the structure of underground, the leaf shape and capitulum features were valuable characters in identifying the taxa. The sect. Absinthium in Korea was classified as three taxa of A. sieversiana, A. lagocephala, A. fauriei. The illustration and description of each taxa were provided. Particularly, A. fauriei in this section with hair on receptacle and A. fukudo in sect. Abrotanum without hair on receptacle grow in mixed groups on the West shore of Korea. Two species with populations which grow in mixed groups, was observed as being putative hybrid individuals based on morphological characters.

Chromosome number report of three Carex sect. Mitratae taxa (Cyperaceae) in Korea

  • CHUNG, Kyong-Sook;IM, Hyoung-Tak
    • Korean Journal of Plant Taxonomy
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    • 제50권3호
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    • pp.361-367
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    • 2020
  • We report meiotic chromosome numbers of three taxa in Carex sect. Mitratae in Korea: Carex breviculmis R. Br. (n = 32II, 33II, 34II), C. polyschoena H. Lév. & Vaniot (n = 37II, 38II), and C. sabynensis Less. ex Kunth (n = 27II). Section Mitratae is one of the most species-rich Asian groups in Carex, comprising approximately 45-80 taxa. Twenty-seven of these occur in Korea, and they are some of the most challenging taxa to identify due to their obscure and inconspicuous diagnostic characters. Including the counts reported here, half of the native Korean sect. Mitratae chromosome numbers have been documented. Their haploid chromosome numbers range from n = 10 to n = 40, and many exhibit variations in the numbers counted within a taxon. These variations, along with the overall significant variation in sect. Mitratae, suggest that dynamic chromosome activity may be related to the high species diversity of Carex.

Flowering Process and Pollination Mechanism of Genus Tilia in Korea (한국산 피나무속 식물의 개화와정과 수분기작)

  • Chung, Yung Ho
    • Journal of Plant Biology
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    • 제27권3호
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    • pp.107-127
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    • 1984
  • An anthecological study of Tilia in Korea was undertaken for six native and one introduced species. Flowers are protoandrous with anther and stigma opening during the day-time in section(sect) Anastraea and the night-time in sect Astrophilyra. Nectar production was coincided with anther and stigma opening. It is revealed that the primary role of floral bracts was attracting pollinators especially in sect Astrophilyra. The peak of stamen and stigma function, and the production of nectar and odor were closely related with pollinator attraction. Forthy-three species of insects in 30 families were identified for the pollination studies; bees were the most commonly observed visitors in sect Anastraea, while moths were the primary visitors in sect Astrophilyra. Pollination study indicate that it is section specific. But within a section, pollination is not species specific thus interspecific hybridization occurs.

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An Implementation of Pan-So-Ri Classification Program Using Naive Bayesian Classifier (나이브 베이지안 분류기를 이용한 판소리 분류 프로그램 구현)

  • Kim, Won-Jong;Lee, Kang-Bok;Kim, Myung-Gwan
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • 제11권3호
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    • pp.153-159
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    • 2011
  • Pan-So-Ri singing a story as song is one of Korea traditional musics. it divide into two sect(east-sect, west-sect), and it is hard to classify two sect without knowledge about Pan-So-Ri. In this paper, we have propose a Pan-So-Ri classification program using PCD(Pitch Class Distribution) and Naive Bayesian Classifier. Attribute value of classifier is each appearance frequency of pitch. Experiment is conducted two time with different rounding off location of probability value. Better one show correct classification with east-sect 80%, west-sect 97%, and total accuracy of 88%. this result is used our program.

Phylogenetic position of Carex splendentissima, a Korean endemic sedge (Cyperaceae)

  • CHUNG, Kyong-Sook;YANG, Sungyu;NAM, Bo-Mi
    • Korean Journal of Plant Taxonomy
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    • 제50권3호
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    • pp.253-261
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    • 2020
  • Carex splendentissima U. Kang & J. M. Chung, endemic to the Korean peninsula, is characterized by staminate terminal spikes and glabrous elliptic perigynia. Based on its broad leaves, androgynous spikes, and tri-stigmatic features, the species has been placed in Carex sect. Siderostictae Franch. ex Ohwi, an East Asian section and a basal group in the genus. To clarify the monophyly and phylogenetic position of the species, a molecular study using the internal transcribed spacer region of nuclear ribosomal DNA and chloroplast DNA (trnL-F) data was conducted. The DNA sequence data of ten taxa in sect. Siderostictae and closely related taxa (two taxa in sect. Surculosae) with outgroups were analyzed based on maximum parsimony and maximum likelihood (ML) criteria. In the analyses, C. splendentissima was monophyletic and placed within the Siderostictae clade (sect. Siderostictae + two species of sect. Surculosae), forming a clade with C. ciliatomarginata and C. pachygyna (endemic to Japan). The clade (C. splendentissima + C. ciliatomarginata + C. pachygyna) shows evidence of diploidy. Furthermore, C. splendentissima is a sister to C. ciliatomarginata in the ML tree, and the two taxa have staminate terminal spikes. This study also updates the distribution of C. splendentissima and provides keys to the four Korean taxa in sect. Siderostictae. To conserve the endemic species C. splendentissima, further research on its genetic and ecological features should be conducted at the population level.

Comparative achene morphology of Persicaria sect. Cephalophilon and related taxa (Polygonaceae)

  • KONG, Min-Jung;HONG, Suk-Pyo
    • Korean Journal of Plant Taxonomy
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    • 제48권2호
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    • pp.134-142
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    • 2018
  • The achene morphology of 21 taxa of Persicaria sect. Cephalophilon including the related taxa of Koenigia (Polygonaceae) was examined using stereo microscopy and scanning electron microscopy to evaluate its diagnostic values and taxonomic implications. The outlines of achene were narrowly ovoid to broadly ovoid in general, and elliptic achenes were observed in Koenigia taxa, with the achene shape being biconvex or trigonous. The size of the P. sect. Cephalophilon taxa ranged from $0.93-3.55{\times}0.80-2.31mm$ and the size of examined Koenigia taxa ranged from $1.10-1.84{\times}0.79-1.02mm$. The smallest achenes in P. sect. Cephalophilon were observed in P. humilis and the largest achenes were found in P. chinensis var. chinensis. Furthermore, infraspecific taxa of P. chinensis had relatively large achenes compared to other taxa within the section. Most taxa of P. sect. Cephalophilon had dull achenes, while four taxa had glossy achenes (P. capitata, P. runcinata var. runcinata, P. runcinata var. sinensis, and P. sinuata). Four types of surface patterns (smooth, tubercles, small pits, and irregular ridge) were observed, and the tubercles were divided into two subtypes according to the grouping and distribution pattern. The achene morphology of P. sect. Cephalophilon is described and compared, and its taxonomic implications are also discussed.

A Study on the Ceremonial Costumes in New Aboriginal Religious Groups in Korea (한국 개창 신흥종교 의례복식에 관한 연구)

  • 김현경;임상임
    • Journal of the Korean Home Economics Association
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    • 제41권2호
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    • pp.123-139
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    • 2003
  • This study examines the characteristics of 45 sects of seven new aboriginal religious groups in Korea including Jeungsan sect, Tangun sect, Soowoon sect, Won Buddhism, Bongnam sect, Gahksedo sect, Shamanism sect through field study and various documents. The purpose of the study is to elucidate how their religious ideas are reflected in their ceremonial costumes and what characteritics and underlying meanings these costumes have, and I reached the following conclusions 1. The new religious groups in Korea modified or mixed the designs or names of existing outfits to convey their ideas or beliefs in their costumes. 2. The costumes of new religious groups turned out to have certain characteristics in common: they all reflected the times, Korean tradition, ancestor worship. 3. I looked at the symbolicity, names, and types of the outfit, and their color scheme to establish their structural characteristics, and it turned out that they an symbolized the creeds and ideas of each religion. The names of the costumes such as Way-Robe, Law-Robe, and Ceremony-Robe, for instance, had to do with Buddhism Taoism, and Confucianism. The most common type of costume consisted of traditional hanbok top, pant, robe, and some type of headpiece for men, and hanbok top and, skirt for women, and if women were to wear a robe, it usually meant the sect believed in sexual equality. There was also a tendency to simplify or minimize the dress code, which seems to indicate that the sect was trying to adapt itself to, the times. The most common type of the outer garment for men was a robe with narrow sleeves, straight lapel, and no slits, and a robe with wide sleeves, straight lapel, and slits for women. The color scheme of the costumes included blue, white, yellow, red, and black, reflecting the influence of the Yin-Yang and Five Elements idea and traditional preference for white of Koreans. 4. These religious costumes were worn at various ceremonies, ritual, and various anniversary services for the master and other dignitaries of the sect to render greater piety to those gatherings, to distinguish the sect from other religious groups, to clarify the meaning of the ceremony, and to heighten the devout feelings of the participants. Thus, the structure (the symbolicity, names, and types of the outfit, and their color scheme) and religious background of the costumes of the new aboriginal religious groups in Korea turned out to have inherited and mixed various element of traditional Korean outfit and those of existing religions to symbolize their religious ideas. Many religions in and fall, and each has its own dress codes, and I hope this study provides a framework and data for other researchers and leaders of new religious groups that will emerge in the future.