• The Korean Journal of Ecology
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• v.15 no.2
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• pp.127-135
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• 1992

The effects of nacl concentration, temperatura, light and growth regulator(GA3, kinetin) on the tuber germination of s. maritimus were investigated. The germination percentage increased with decreasing nacl, showing salt tolerance through time, and with increasing temperature untile 20~30oC light / dark (12/12 hr) of optimal temperature. The multiplication of nacl and temperature on germination percentage and velocity, increased significantly in higher temperature than lower temperature in saline. The germination percentage showed high value in dark condition than in light condition which is the charracteristics of underground organ. and ga3 act as germination stimulator to overcome the inhibitory effect of nacl. The effect of ga3 showed significant differances on tubers of s. maritimus of germination but that of kinetin had a litter sffects on germination. Factors of nacl and temperature interacted significantly and the effects of nacl on germination percentage and velocity depended on temperature condition.

• Journal of agriculture & life science
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• v.45 no.6
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• pp.1-7
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• 2011

This work was performed to confirm the molecular discrimination through the nrITS1 sequences among 3 taxa of Scirpus L. sensu lato (s.l.) species. S. planiculmis represented only 2 base sequence variations with S. maritimus in spite that they showed different morphological features. The nucleotide sequences of the ITS1 region from S. planiculmis were shown to have 99.1% homology with S. maritimus and 60.4% homology with S. triqueter. Although the morphology of S. planiculmis is similar with S. triqueter, molecular basis of the size and sequences on ITS1 region were shown to have distinctive differences. For divergency investigation on same sites and metapopulation, sequencing was conducted on ITS1 region with partial 5.8S and 18S regions. All plants of each species collected at the same site had identical band size pattern and sequences. Intraspecific molecular divergency was not identified in spite that these species live in different wetland sites. The ITS1 sequences described here provided a powerful genetic tool for phylogenetic studies which was difficult by morphological identification as high rate of morphological plasticity.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.1
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• pp.60-63
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• 1978

The survey was carried out over an area representing about 29％ of the reclaimed paddy fields of west and south seashore in Korea. Scirpus maritimus L. was heavily infested all over the reclaimed paddy fields. But the weed was scarcely found in double cropping fields cultivating barley at paddy after rice or in reclaimed paddy fields where the cultivation was taken a long time.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.1
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• pp.74-80
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• 1978

To identify new herbicides for the control of Scirpus maritimus and evaluate the performance of some promising herbicides for transplanted rice, field experiments were carried out in the reclaimed paddy fields.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.1
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• pp.64-73
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• 1978

To gain a better understanding of the germination and growth of Scirpus maritimus, pot and field experiments were conducted to observe the development of new rhizomes and tubers, the growth rate of culms. and the germination behaviour of tubers of this perennial weed. Tuber placement, water depth, salinity and pH were also observed for their possible influence on the growth of S. maritimus.

• Journal of Microbiology and Biotechnology
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• v.17 no.8
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• pp.1379-1384
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• 2007

Four Gram-negative, chemoheterotrophic, non-motile, yellow-colored strains were isolated from the East Sea or from deep-sea sediments of Nankai Trough by standard dilution plating. Characterization by polyphasic approaches indicated that the four strains are members of the same species. Phylogenetic analyses based on 16S rRNA gene sequences revealed that the strains formed a coherent and novel genus-level lineage within the family Flavobacteriaceae. The dominant cellular fatty acids were i-C15:0, 3-OH i-C17:0, and 2-OH i-C15:0 and/or C16:1 ${\omega}7c$. Predominance of 2-OH i-C15:0 and/or C16:1 ${\omega}7c$ clearly differentiated the strains from closely related members. The DNA G+C contents ranged 35.1-36.2 mol%. It is proposed, from the polyphasic evidence, that the strains should be placed into a novel genus and species named Sufflavibacter maritimus gen. nov., sp. nov., with strain $IMCC1001^T(=KCCM\;42359^T=NBRC\;102039^T)$ as the type strain.

• Korean journal of applied entomology
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• v.20 no.4 s.49
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• pp.196-206
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• 1981

We examined the imported Scolytidae and Platypodidae (Coleoptera) specimens preserved at Incheon Plant Quarantine Station. Indentified species are the following 2 subfamilies, 6 genera, 14 species in Scolytidae and 2 subfamilies, 2 genera, 11 species in Platypodidae; Scolytidae Platypodidae Ipinae Platypodinae Arixyleborus granulifer Platypus agnatus A. rugosipes P. biuncus Xyleborus posticepilosus P. curtus X. similis P. geminatus X. subcostatus P. jansoni Ips pini P. maritimus I. plastographus P. pseudocupulatus pseudocupulatus I. tridens P. shoreanus bifurcus Trypodendron lineatum P. solidus Hylesininae Diaporinae Dendroctonus adjunctus Diapus pendleburyi D. brevicois D. pusillimus D. frontalis D. ponderosae Hylurgops porosus.

• Korean Journal of Veterinary Service
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• v.44 no.4
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• pp.299-303
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• 2021

A captive male polar bear (Ursus maritimus) was found dead after a long-term anorexia at a Park Zoo in Republic of Korea. At necropsy, the liver lesion was prominent with hepatomegaly carrying a big mass and numerous small nodules in various sizes. The cut surface of the nodules was creamy white, firm, and solid with umbilicated appearance. Histologically, there was proliferation of hepatocellular neoplastic cells arranged in glandular-like (pseudoglandular) pattern and complete loss of hepatocellular arrangement. The immunoreactivity for neoplastic hepatocyte antigens was positive for hepatocyte paraffin 1, and negative for vimentin, cytokeratin 7 and 19, and carcinoembryonic antigen. Based on those diagnostic features, the neoplasia was diagnosed as hepatocellular carcinoma. To the author's knowledge, this is the first case report of hepatocellular carcinoma in the captive polar bear in Republic of Korea.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.25 no.3
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• pp.1-8
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• 1980

Eight different weed community types growing in association with transplanted rice were identified in the experimental fields used in these studies. The Importance Value (LV.) of weed species growing in association with rice changed with time. The I. V. of Echinochloa glabrescens Munro ex Hook f. increased from 40 days after transplanting (DAT) until heading and then, decreased from heading to maturity of rice. However, the LV. of Monochoria vaginalis (Burm.) Pres!. and Echinochloa crus-galli ssp. hispidula (Retz.) Honda increased from 40 DAT to maturity while Scirpus maritimus L. decreased from 40 DAT. There was a high negative correlation between grain yield and weed weight at rice heading in all weed communities. The competitive ability of rice against weeds varied depending upon weed species. The highest yield decrease due to weed competition was obtained from the E. crus-galli ssp. hispidula-S. Maritimus community. Forty-two percent yield reduction was caused by competition of 100g dry weight of weeds per square meter of this community type at rice heading. The yield decrease for the same amount of weeds was 10% for the E. glabrescens community, 15% for the M vaginalis community and the M vaginalis-Scirpus supinus L. community and 21% for the M vaginalis-E. glabrescens-Fimbristylis littoralis Gaud.-S. maritimus community type.

• Korean Journal of Plant Taxonomy
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• v.34 no.4
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• pp.287-295
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• 2004

Daucus species vegetated in the island Dae-heug-san-do off the Korean Peninsula has been recorded as Daucus littoralis Sibth. et Sm. var. koreana Nakai, endemic to Korea in several flora. However, the name was revealed as a naked name, nomen nudum, because the valid publication and type specimens were found anywhere. Comparative observation on morphological characters between the Korean taxon of Daucus and D. littoralis reveals that the Korean vegetated in the island Dae-heug-san-do is not the D. littoralis, but the D. carota L. subsp. carota. The Korean name of the latter is designated newly as San-dang-geun. The new korean name, Seon-dang-geun, of the unrecorded taxon, D. carota subsp. maritimus (Lam.) Batt., is also given.