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Review of Disease Incidence of Major Crops in 2002 (2002년 농작물 병해 발생개황)

  • Kim, Choong-Hoe
    • Research in Plant Disease
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    • v.9 no.1
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    • pp.10-17
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    • 2003
  • The year of 2002 was very unusual in climatic condition. Warm winter weather, high temperature and drought in March and April, little precipitation in June and early and mid-July and, nearly continuous rain-falls from late July to whole period of August accompanied with low temperature and insufficient sunshine in 2002 resulted in unfavorable conditions for plant growth in one way or another, In relation to the unusual weather, in general, diseases associated with low temperature, poor radiation and much rainfall occurred severely in this year, In rice, incidence of bacterial grain rot, and false smut increased sharply, whereas other major diseases including blast occurred mildly due mainly to the reduced application of nitrogen fertilizer, In vegetables, potato and sweet potato, and fruit trees, incidence of diseases was largely dependent on climatic condition of growth period in particular crops. However, diseases favored low temperature and much rainfall, such as Phytophthora disease increased markedly compared to those of normal years, while anthracnose and soft rot tended to decrease significantly.

Sporulation and Dissemination of Pycnidiospores of Diaporthe citri in Yuzu Tree (Citrus junos Sieb) in Jeonnam Area (전남지역 유자과원의 검은점무늬병균 포자 형성과 비산)

  • Hur, Kil-Hyun;Park, Seur-Kee
    • Research in Plant Disease
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    • v.11 no.1
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    • pp.16-20
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    • 2005
  • Several time-course experiments were carried out to understand seasonal development of melanose on yuzu trees at koehung area, Jeonnam province, during May to October. The occurrence of dead twigs, known as a source of infection, was much more in older trees, and from June to August, mostly in July. In the experiment of pycnidia development on dead twigs seasonally collected, the number of developed pycnidia was highest on July-collected dead twigs especially with the diameter of 1.1~1.5 cm. In the collection survey of disseminated pycnidiospores, although the collected number of pycnidiospores was affected with amount of precipitation, the number of observed pycnidiospores in rainwater was relatively high from June to August, with highest in early August in 1997 and late July in 1998. In the inoculation tests on 3-year-old trees and fruits in natural condition, disease occurrences were mostly affected on twigs by inocula treatment in June, and on fruits by inocula treatment in July, respectively.

Tongue-Lip Adhesion Using an Alveolar Protector Appliance for Management of Pierre Robin Sequence (피에르 로빈 연속증의 치료로써 치조 보호 장치를 이용한 혀-하순 유착술)

  • Lee, Jang-Won;Park, Beyoung-Yun
    • Archives of Plastic Surgery
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    • v.38 no.4
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    • pp.547-551
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    • 2011
  • Purpose: Pierre Robin sequence is a congenital malformation in which micrognathia causes glossoptosis and airway obstruction. If conservative treatment fails, surgical procedures such as tongue-lip adhesion can be performed. However, this procedure remains a subject of debate, with favorable results being countered by reports of complications. To overcome the above limitations, we revised the traditional method of tongue-lip adhesion using an alveolar protector. Methods: Between 1992 and 2011, a total of eight patients were identified with Pierre Robin sequence and were treated with tongue-lip adhesion. Two of these eight tongue-lip adhesion procedures were performed with an alveolar protector. The operative technique for tongue-lip adhesion was similar to that described in other published reports. The alveolar protector was inserted between the ventral surface of the tip of the tongue and the lower labial sulcus. Results: Tongue-lip adhesion failed in two patients because of wound dehiscence. The primary surgical success rate was 66.7%. In the two tongue-lip adhesion procedures performed with the alveolar protector, we observed no postoperative complications. Conclusion: Resistance to traction of the tongue can be encountered with nonunionized symphysis menti, causing loosening of the traction suture through the symphysis menti. This can lead to backward positioning of tongue, resulting in dehiscence of tongue lip adhesion. The alveolar protector is a good adjunct to tongue-lip adhesion because this method avoids postoperative loosening of the traction suture and wound dehiscence. It is a simple and effective auxiliary method that yields functional improvement.

Studies on Dormancy Breaking, Sowing Time and Inhibition of Germination during Storage of Seed in Wasabia japonica MATSUM (고추냉이 종자(種子)의 휴면타파(休眠打破), 저장중(貯藏中) 유아출현억제(幼芽出現抑制) 및 파종기(擺種期)에 관(關)한 연구(硏究))

  • Kim, Sun-Kon;Kim, Dong-Won;Whang, Chang-Ju;Nam, Sang-Sig
    • Korean Journal of Medicinal Crop Science
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    • v.4 no.1
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    • pp.64-67
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    • 1996
  • This experiment was carried out to obtain the information on seed dormancy, germinability during storage in wasabia japonica Matsum. $GA_3$ 100ppm+BA 10ppm was more effective than $GA_3$100ppm alone in breaking the dormancy. Storage of seeds pretreated with growth retardants (CCC, Uniconazol) seemed to be a useful method for preventing germination during storage. The stratification was an effective storage method to germinate the seeds for sowing them in fall.

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Optimum Transplanting Time of Ostericum koreanum Kitakawa (강활 노두의 정식적기)

  • Hur, Bong-Koo;Sim, Yong-Goo;Kim, Young-Hyo;Kim, Soo-Yong;Choi, Kyong-Bai
    • Korean Journal of Medicinal Crop Science
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    • v.14 no.1
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    • pp.41-44
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    • 2006
  • This study was conducted to investigate the optimum transplanting time of Ostericum koreanum Kit. cultivating under root apex propagation. Transplanting time per 10 days were from March 20th to May 1st. The results are follows : Soil chemical properties before experiment were well adapted upland including moderate fertility. Average temperatures during cropping seasons except March late were lower than normal years, but rainfall was abundant than that of normal years. The ratios of emergence and bolting were higher in the faster transplanting time. And also plant height, stem length and number of stem were well. Yield components of transplanted April 1st were well, and yield was 251 kg/10a. The yield was increased by 13% than that of March 20th. So optimum transplanting time is considered about April 1st.

Studies on the Mulberry Graftages VII. Earlier Grafting with Preservation of Grafts in Sawdust (뽕나무 접목묘에 관한 연구 VII. 접목 후 톱밥저장에 의한 조기접목)

  • Lee, Won-Ju;Choe, Yeong-Cheol;Lee, Yeong-Han
    • Journal of Sericultural and Entomological Science
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    • v.35 no.1
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    • pp.7-10
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    • 1993
  • Mulberry grafting season in normally a one month period starting at the end of March. Such a short period creates a shortage of qualified grafters and inflates wages. Pine tree sawdust was tested as a medium in which to preserve graftages. Sawdust was moistened to two ratios of water to dry weight of sawdust (1.5 and 2.0). Scions were either grafted the same day they were collected or first incubated for 10days at 15$^{\circ}C$. Grafting period could be extended to the middle of February under 1.5 times moisture content and fresh scions. Preservation of scions increased water content, T-N, P2O5, CaO and inositol, whereas decreased total C, glucose and fructose. With no preservation total C decreased, inositol increased slightly early March followed sharp decrease, and sucrose increased with time.

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A Pathological Survey on Equine Viral Rhinopneumonitis Occurred in Korea (말 바이러스성(性) 비폐염(鼻肺炎)에 관한 병리학적(病理學的) 연구(硏究))

  • Bak, Ung-Bok;Lim, Chang Hyeong;Kang, Bu Hyeon;Lee, Shi Young
    • Korean Journal of Veterinary Research
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    • v.21 no.1
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    • pp.11-23
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    • 1981
  • 서울 경마장(競馬場)의 경주마(競走馬) 517두를 대상으로 호흡기병상(呼吸器症狀)을 관찰하여 1978년 12월 중순(中旬)부터 1979년 1월 초순(初旬) 까지 42.9%의 호흡기병상발생률(呼吸器症狀發生率)을 보았고 1979년 1월 하순(下旬)부터 5월 중순(中旬)까지 임신마(姙娠馬)의 60%가 사산(死産)을 일으켰다. 사산(死産)된 태자(胎仔)는 육안적(肉眼的)으로 흉강수액(胸腔水液)의 저류, 각 장기(臟器)의 울혈성수종(鬱血性水種), 출혈성병변(出血性病變)과 간장(肝臟)의 소상괴사(巢狀壞死)를 나타내었고, 조직학적(組織學的)으로는 간장(肝臟)의 한국성괴사소(限局性壞死巢), 비장(脾臟), 임파절(淋巴節), 흉선(胸線)과 Peyer판(板)에서의 세강(細網) 세포(細胞)의 증식성(增殖性), 괴사성변화(壞死性變化)와 임파양세포(淋巴樣細胞)의 붕괴(崩壞)를 시현(示顯)하였다. 여기서 간세포(肝細胞), 담관상피세포(膽管上皮細胞), 소기관지상피세포(小氣管支上皮細胞) 및 비장(脾臟), 임파절(淋巴節), 흉선(胸線)의 세강(細網) 세포(細胞)에서 Cowdry type A 봉입체(封入體)를 확인하였다. 이상의 역학적(疫學的) 및 병리학적(病理學的) 소견(所見)에 의하여 본(本) 마유산증(馬流産症)을 말 바이러스성 비폐염(鼻肺炎)이라고 진단(診斷)할 수 있었으며 본(本) 발병예(發病例)가 한국(韓國)에서 초발생(初發生)인 것으로 추정(推定)되었다.

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Physicochemical Properties of Agarooligosaccharides for Using as Food Stuffs (식품소재로서의 한천올리고당의 이화학적 특성)

  • Kim, Bong-Jo;Song, Chang-Moon;Ha, Soon-Duck;Hwang, Sun-Hee;Kim, Hak-Ju;Bae, Seoung-Kwon;Kong, Jai-Yul
    • Korean Journal of Food Science and Technology
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    • v.32 no.2
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    • pp.284-290
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    • 2000
  • A marine bacterium Bacillus cereus ASK202 showing a high agar degrading activity, was incubated in the culture medium containing agar. After incubation for 30 hr, the productivity of agarase in the culture broth reached to maximum value (160.8 units/L). As the results of TLC and HPLC analysis, agarooligosaccharides (degrees of polymerization 2, 4 and 6) were produced from the hydrolysis of agar by using the crude agarase. Physical and chemical properties of agarooligosaccharides were compared with the manufactured products of other oligosaccharides (fructooligosaccharide; isomaltooligosaccharide; maltotetraoligosaccharide) and agarooligosaccharides showed higher viscosity, higher contents of oligosaccharides, higher stability at low pH's and higher temperatures, and lower sweetness than other oligosaccharides.

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Breeding of a New Light Pink Spray-mum 'Brown ND' for Cut Flower (연분홍색의 절화용 스프레이국화 '브라운엔디' 육성)

  • Kim, Hyun Seok;Han, Youn Yul;Seong, Jeon Joong;Choi, Dong Jin
    • FLOWER RESEARCH JOURNAL
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    • v.18 no.1
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    • pp.73-76
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    • 2010
  • A new light pink spray-mum, 'Brown ND' was bred by crossing between 'Noeul', a yellow anemone type flower, and 'Dalma', a pink anemone type flower in October 2003. The growth and flowering characteristics were investigated in forcing, natural, and retarding cultures from 2005 to 2007. The 'Brown ND' was a medium-flowering fall-mum with light pink anemone type flower and had 10.6 flowers per stem, 4.1 cm diameter of flower in natural culture. The number of days to flowering and flowers per plant was 59 and 9.1, respectively, in forcing culture of 'Brown ND' whereas the number of days to flowering was 49 in retarding culture.

Cymbidium 'Honey Girl' with White Color and Medium Plant Size (중형 백색계 다화성 심비디움 'Honey Girl' 육성)

  • Kim, Mi-Seon;Cho, Hae-Ryong;Lee, Hye-Kyung;Lim, Jin-Hee;Choi, Sung-Yul;Kim, Young-Jin
    • FLOWER RESEARCH JOURNAL
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    • v.16 no.4
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    • pp.291-294
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    • 2008
  • Cymbidium 'Honey Girl' was developed in 2005 by the National Horticultural Research Institute, Rural Development Administration. This cultivar came from cross between Cym. 'Yakoto' and Cym. 'Marian Simplicity' in 1995. Fifty seven seedlings were obtained after planting and acclimatization in green house. In 1999, a line was selected by its performance such as flower color, leaf shape, flower stalk, and vigorous growth which was named 'Wongyo F1-13'. The line code '9521928'($V_2$) had uniformity and excellent characteristics. The selected line was named as 'Honey Girl' after second characteristics test. This cultivar had white color ('WN 155B') and medium sized leaves and flowers (average leaf length is about 57 cm and width of flower is about 7.7cm) with many flowers and erect flower stalks. Blooming begins from the end of November to December under the normal culture conditions.