• Title/Summary/Keyword: 엽기

Search Result 267, Processing Time 0.02 seconds

Effect of Growth Regulators on Growth of Rice Plant I. Effect of Growth Retardants on Growth and Ethylene Evolution of Rice Seedlings (벼 생육에 미치는 생장조정제의 영향 I. 묘의 생육 및 에칠렌생성에 미치는 생장억제제의 영향)

  • Lee, Moon-Hee;Ota, Yasuo
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.30 no.1
    • /
    • pp.101-106
    • /
    • 1985
  • A series of experiments were carried out to know the effect of growth retardants on the growth of rice seedlings and ethylene evolution from the rice seedlings. The results suggested that the reduction rate in order of plant height was S-327 > BAS-106 > NTN-821 > PP-333 > CGR-811. The heigher concentration levels of growth retardants applied. the more effective reductions of plant height were found. Ethylene evolution from the rice seedlings was significantly negative correlated with plant hight of of seedlings in all treatments.

  • PDF

The Breeding of “Sawonppong 27” that is Autotetraploid of the Sangilppong which has Good Mulberry Dwarf Resistance (Morus spp.) (뽕나무 오갈병에 강한 常一뽕의 동질4배체 ″4原뽕27號″ 創成)

  • 박광준
    • Journal of Sericultural and Entomological Science
    • /
    • v.44 no.1
    • /
    • pp.1-3
    • /
    • 2002
  • The colchicine drop treatment is done on the growthpoint of the Sangilppong, which is the leading mulberry variety for mulberry dwarf resistance. So the breeding of the Sawonppong 27, that is tetraproidy, is succeeded and the chracteristics of this is as follows. The chromosome number of it is 2n=56, tetraproidy. The spring sprouting stage is midseason mulberry variety, and the leaf has a broad width shape that the oval leaf and the 3 lobed leaf exist simultaneously, The thickness of leaf is thick, the branch length and internorde length are short. The nonbudding of basal part does not exist and the cold hardness of this is stronger than the Sangilppong.

Studies on the Ouality of Boxthorn in Korea(Lycium chinense Miller) (한국 구기 품종의 품질에 관한 연구)

  • 이상래
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.28 no.2
    • /
    • pp.267-271
    • /
    • 1983
  • The southern parts varieties have shown higher content of Oleic acid, Linoleic acid, Vitamin A, Alcaloid, Ca, P and Fe than northern parts Varieties. The $N.\;P_2O_5\;and\;K_2O content of narrow leaf were higher than wide leaf, on the other hand the Ca, Mg, Fe and $SiO_2$ content of wide leaf were higher than narrow leaf. The content of $N, \;P_2O_5, \;K_2O$ have shown higher in first yellow leaf date, the content of Ca has shown higher in first falling leaf date and the content of Mn and Cu content have shown higher in second new leaf date.

  • PDF

Induction of Bactericidal Substance from the Immunized Larval Haemolymph of L. illustris (면역유충 체액으로 부터 항균물질의 유도)

  • 육순학;장정순
    • Korean Journal of Microbiology
    • /
    • v.25 no.4
    • /
    • pp.309-317
    • /
    • 1987
  • It was known that normal-haemolymph from the 3rd instar larvae of Lucillia illustris contain a lysozyme (or lysozyme-like substance) with bactericidal activity to fram positive bacteria, and the bactericidal activity of injured-haemolymph was increased significantly after injuring the body wall. To elucidate the defence mechanism of insect against the nonpathogenic bacteria, the immune-haemolymph against Escherichia coli K-12 was prepared after immunization. The bactericidal activity between injured and immune-haemolymph was compared, and it was revealed that the immune-haemolymph showed higher titer of bactericidal activity to fram positive bacteria as well as to Escherichia coli. The bactericidal substance from the immune-haemolymph was purified through a successive chromatographies on Sephacryl S-300 and CM-Sepharose CL-6B, and it was characterized as a basic protein in nature with heat stable property at acidic conditions.

  • PDF

Bronchopathia Osteochodroplastica Mimicking Lung Malignancy (폐암으로 오인된 기관지 골연골증)

  • Oh, In-Jae;Choi, Yoo-Duk;Choi, Song;Kim, Soon-Jin;Kim, Kyu-Sik;Song, Sang-Yun
    • Journal of Chest Surgery
    • /
    • v.43 no.6
    • /
    • pp.800-803
    • /
    • 2010
  • Tracheobronchopathia osteochondroplastica (TO) is an uncommon benign disease of an unknown etiology and it affects the cartilaginous walls of large airways. Most cases of TO have been reported to involve the lower two-thirds of the trachea and the proximal bronchi. Unlike the usual cases of TO, exclusive bronchial involvement and the formation of a solitary mass are very rare. We experienced an unusual case that had exclusive bronchial involvement and the formation of a solitary mass and this all mimicked lung malignancy. After surgical resection, we were finally able to diagnose the mass as bronchopathia osteochondroplastica.

Effect of Drought Stress at Various Growth Stages on Soybean Growth and Yield (생육단계별 한발처리가 콩의 생육 및 수량에 미치는 영향)

  • 김충국;고문환
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.42 no.1
    • /
    • pp.89-94
    • /
    • 1997
  • The present study was conducted to know the growth and yield of in response to the drought stress at the different soybean growth stage. Drought stress was given to the soybean plants on early vegetative growth at fourth-node stage(FNS), mid-growth at beginning pod stage(BPS) and late growth at beginning seed stage(BSS) for 30 days, which are high availability in soil water stress on climate condition of Korea. Dry weight was decreased severely by water stress at FNS, and BPS and BSS has no difference compared to control. Chlorophyll content of leaf severely decreased at the end of water stress of FNS and BPS, but was recovered at the harvest stage. Drought-stressed root distributed mainly near the soil surface and number and dry weight of root nodule were decreased severely by drought stress at BPS. Number of pod, seed weight and yield were decreased by drought stress and showed the highest yield loss at BPS.

  • PDF

A Study on the Characteristics of Taste-Based Look Presented in Modem Fashion (현대 패션에 표현된 취향지향적 룩의 조형적 특성과 미적 가치)

  • Song, Geum-Ok;Kim, Young-In
    • Archives of design research
    • /
    • v.18 no.4 s.62
    • /
    • pp.195-204
    • /
    • 2005
  • This study was peformed to systematize the concept of taste being recognized as new cultural values, as well as to ascertain the looks and aesthetical values presented in modern fashion in terms of taste. Taste is the life style being pursued individually, a preference and the important factor that characterizes each individual among contemporaries. In particular, the fashion is an important means able to differentiate respective tastes. The taste-based looks including; the dandy-look, the kitsch-look, fetish-look, the grotesque-look, and the kidult-look, etc. are reviewed as cases. Those are well expressing the phases of each times. The looks reflecting contemporaries' various tastes, are symbolic means showing the positive expectations on the present and the future. The looks are unifying fashion and society, and the designers are able to be key roles satisfying customer's taste by presenting of their collections. It is expected that the outcome of this study may provide academic basis of the tastes and a framework of interpretation of the tastes and fashion looks within culture by the aesthetical values presented as fashion.

  • PDF

A Study on the Aesthetic Motive in e-Card Design (e카드 디자인의 미적 동인에 대한 연구)

  • 박성완
    • Archives of design research
    • /
    • v.16 no.3
    • /
    • pp.401-410
    • /
    • 2003
  • With increase of internet users, usage frequency of e-mail card is growing up. In addition to advantage of delivering message in real-time, e-mail card contains words, animation and sound. So users can enjoy it's multiple characters. For these reasons, there is a shift in preference from traditional card to e-mail card especially in young age. In character portal sites sewing users with e-mail card it is regarded as useful media for character promotion. After bizarre rabbit 'Mashimaro' wins a great success as Flash animation, Flash card has been treated as an important media in character business. As the study on the aesthetic motive in Flash card, this thesis analyzes what is the meaning existing in characteristic expression of Flash card and proposes that the meaning is related to tension reduction from the viewpoint of entropy principle. We can summarize that contents of animation are based on striving toward simplicity and expressions of animation are based on catabolism. Both lead to pleasure of tension reduction. We can draw conclusion that pleasure of tension reduction becomes one of major factors of the aesthetic motive felt in Flash card.

  • PDF

Effect of Hypoxia on Carbohydrate Metabolism in Barley Seedlings (저산소 조건이 보리 유묘의 탄수화물대사에 미치는 영향)

  • Choi Heh Ran;Park Myoung Ryoul;Kim Jung Gon;Namkoong Seung Bak;Choi Kyeong-Gu;Yun Song Joong
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.50 no.3
    • /
    • pp.170-174
    • /
    • 2005
  • Barley plants growing in the wet paddy field easily encounter suboptimal oxygen concentration in the rhizosphere that causes molecular oxygen deficiency in root cells. The capacity of root cells to utilize energy sources is known to be positively related to resistance to hypoxia stress. This study was conducted to investigate effects of hypoxia on enzymes involved in the starch and sucrose metabolism. Barley seedlings at the third leaf stage were subjected to hypoxia (1 ppm dissolved oxygen) by purging the culture solution with nitrogen gas for up to seven days. The protein content was slightly decreased by hypoxia for 7 days. $\alpha-Amylase$ activities increased significantly in the root but not in the shoot after 3 to 7 days of hypoxia. $\beta-Amylase$ activities were not affected significantly in both tissues. Additionally, sucrose synthase activities were affected little in both tissues by 7 days of hypoxia. The results indicate that root cells activate break­down of polysaccharide reserves in response to an acute hypoxia to supply energy sources for fermentative glycolysis and cell wall fortification.

Varietal Difference of Growth Inhibition by Ouinclorac in Tomato Seedling (토마토 유묘(幼苗)의 Quinclorac에 의한 生育 저해(沮害) 정도(程度)의 품종간(品種間) 차이(差異))

  • Lee, Y.M.;Shin, S.H.
    • Korean Journal of Weed Science
    • /
    • v.14 no.4
    • /
    • pp.291-297
    • /
    • 1994
  • Seedlings of eight varieties of tomato were treated on the soil surface by each six application rate (0 to 5g ai/ha) of herbicide quinclorac. Percent of control in plant height at 7 days after treatment ranged from 69% to 81% at 5g ai/ha application of quinclorac. At 28 days after treatment those of (2-26)*836038 and (TR*VC8-1)-1-2F4 were 88% and 89%, respectively. However, those of other six varieties except former two varieties were 61% to 68%. The variations of percent of control in shoot dry weight among eight varieties were larger than those in plant height. Those of (2-26)*836038 and (TR*VC8-1)-1-2F4 were also higher than those of other six varieties at 4 - 5g ai/ha application of quinclorac.

  • PDF