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The Current Status and Breeding Perspective of Major Vegetable Crops in Sri Lanka
M.J.M.P. Kumararathna,M.A.P.W.K. Malaviarachchci,W.M.W. Weerakoon,Won Byoung Chae,Myeong Cheoul Cho,A.M. Perera,Min-Kyeong Kim,Eun Young Yang 한국국제농업개발학회 2020 韓國國際農業開發學會誌 Vol.32 No.1
스리랑카는 채소의 주년 생산에 적합한 기후를 갖고 있는 열대국가이다. 열대, 아열대 채소의 재배면적은 전체 농지(105,062 ha)의 약 3%이다. 지난 50년 동안 스리랑카에서 채소 육종에 관한 체계적인 연구가 이루어졌고 채소 부문은 지속적으로 증가하였다. 하지만 채소 육종, 재배 및 가공과 관련된 기술이 선진국에 비해 많이 뒤떨어져 있는 형편이다. 전통 육종법을 통해 개발된 다양한 농업적 형질을 가진 품종이 현재까지 스리랑카의 채소 생산에 이용되고 있지만 생명공학적 방법을 접목한 채소 품종 육종법의 중요성이 점차로 부각되고 있다. 본 논문은 스리랑카에서 중요한 채소 작물인 토마토, 고추류, 콩류, 가지 및 여주의 육종과 품종 현황을 소개하고 향후 스리랑카 육종 전망에 대해 논의하였다. Sri Lanka is a tropical country having a favourable climate for year around vegetable production. Many tropical and sub-tropical vegetables are grown in approximately 3% of total agriculture lands (105,062ha). In Sri Lanka, systematic studies on vegetable improvement have been conducted for 50 years and, since then, Sri Lanka has gradually increased its vegetable sector. However, Sri Lanka fall behind in technologies for vegetable breeding, cultivation and processing compared with developed countries. Cultivars with various agronomic characteristics developed through conventional breeding approach have been contributed to vegetable production in Sri Lanka. Since the crop improvement through conventional breeding has been realized at a slower phase, integrated approach with biotechnological tools became important for vegetable development. Here, we provided the current states of five major vegetables such as tomato, capsicum, beans, brinjal and bitter gourd and their leading cultivars. The outlook of breeding activities in Sri Lanka was also discussed.
이계완,조정완,김길무 대한금속재료학회(대한금속학회) 1972 대한금속·재료학회지 Vol.10 No.1
CO·CO₂가스 분위기하에서의 Fe-W 용융체에 대한 슬래그-용강간의 반응을 1,650℃ 및 1,750℃에서 검토하였다. Pco/Pco₂=5.0 이상에서 텅스텐의 슬래그-용강간의 분포, [W]/(WO₃)는 다음 반응평형에 따라 결정된다. (WO₃)+3[Fe]=[W]+3(FeO) log K_f=-22,300/T+10.66 슬래그-용강간의 반응에 대한 평형항수, K_f는 1,650℃의 경우 Pco/Pco₂=3.3이하에서 점차로 감소하고, 1,750℃의 경우는 Pco/Pco₂=5.0 이하에서 급격히 감소한다. 슬래그상중의 (FeO)함량은 Pco/Pco₂가 감소함에 따라 다음 반응에 의하여 증가한다. [Fe]+CO₂=(FeO)+CO 공기중에서 용해할 때 슬래그-용강간의 반응을 다음과 같이 추정하였다. (WO₃)+2.5[Fe]=[W]+2.5(FeO_(1.2)) log K_i=-14,288/T+6.31 Slag-metal reactions for iron-tungsten melts under CO·CO₂ gas atmosphere are investigated at 1,650℃ and 1,750℃. When Pco/Pco₂ is more than 5.0, slag-metal distributions of tungsten, [W]/(WO₃), can be determined by the following reaction equilibriclm. (WO₃)+3[Fe]=[W]+3(FeO) log K_f=-22,300/T+10.66 The equilibrium constant, K_f, for the slag-metal reaction slightly decreases when Pco/Pco₂ is less than 3.3 at 1,650℃, and suddenly decreases below Pco/Pco₂=5.0 at 1,750℃. (FeO) contents of slag phase increase, as Pco/Pco₂ decrease according to the following reaction, [Fe]+CO₂=(FeO)+CO, An estimation for slag-metal reactions on open melting is as follows; (WO₃)+2.5[Fe]=[W]+2.5(FeO_(1.2)) log K_i=-14,288/T+6.31
1996년도 제35차 대한소화기학회 추계학술대회 / 췌장 가성남종의 내시경적 One-step 내배액술의 임상적 유용성
조영덕(Y . D . Cho),이영홍(Y . H . Lee),봉형근(H . K . Bong),김진오(J . O . Kim),조주영(J . Y . Cho),김연수(Y . S . Kim),이준성(J . S . Lee),이문성(M . S . Lee),심찬섭(C . S . Shim),황성규(S . G . Hwang),전기원(K.W. Jeon),변재호(J.H. By 대한소화기학회 1996 대한소화기학회지 Vol.28 No.1
보리 총제담근먹이 급여가 거세한우의 발육 , 사료이용성 및 육질에 미치는 영향
홍성구,조원모,이종문,윤상기,조영무,정의수 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.2
This study was conducted to investigate the effect of feeding whole crop barley silage(WBC) on growth performance, feed efficiency and meat quality in Hanwoo steers. Forty steers were allocated to control(C) which was fed rice straw overall periods and four treatment groups(T₁- T₄) which were fed both WBC and rice straw ad libitum according to the treatments and allowed free access to water. Concentrates were fed at 1.5% level of live body weight during 4-12 months of age, at 1.8% level of live body weight during 13-18 months and ad libitum after 19 months. The results obtained were as follows : The daily gain of control (C) was lower (0.7㎏) than that of treatment group (0.8㎏) and the concentrate intake per ㎏ gain during experimental periods in control (C) was higher than those of treatments, also dry matter basis obtained the same results. Cold carcass weight in Control was lower than those of other treatments except T₄, especially was lower than T₂(p $lt; .05) but fat percentages in T₂was higher. Beef quality and yield traits of steers in T₂was higher than those of treatments. Therefore WBC as roughage has effect on steer feeding system for improving meat grade and growth.
31 위점막의 장상피화생 아형에서 trefoil peptide (TFF1, TFF2, TFF3)의 발현
김병욱 ( B. W. Kim ),이아원 ( A. W. Lee ),이교영 ( K. Y. Lee ),김경미 ( K. M. Kim ),김재광 ( J. K. Kim ),이보인 ( B. I. Lee ),최황 ( H. Choi ),조세현 ( S. H. Cho ),최규용 ( K. Y. Choi ),채현석 ( H. S. Chae ),김성수 ( S. S. Kim ),정인식 대한소화기학회 2002 대한소화기학회 추계학술대회 Vol.2002 No.-
점토광물질 첨가가 한우 송아지의 발육 및 면역기능에 미치는 영향
조원모,송만강,안병석,김준식,최성복,백봉현,강우성,이수기 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.6
The study was conducted to investigate the effect of dietary supplements of clay additives on the growth performance and immunity in Hanwoo calves. Treatment were composed of control(basal diet) and 3 treatments(basal diet+5% illite, bentonite, and kaolinite). This study was carried out for 90 days with a total of 16 calves from 8 days of age after birth. Basal diet(milk replacer and calf starter) were fed ad libitim during entire experimental period and the results obtained were as follows : 1. Total weight gains throughout the experimental period from 8 days to 90 days of age were 34.88, 36.10, 35.97, and 39.23㎏ for non-supplemented (control), Illite-, Bentonite-, and Kaolinite-supplemented groups, respectively. It tended to be higher in clay mineral-supplemented groups than in control group, however, no statistical significances were found. 2. Average daily intakes of calf starter were 0.66, 0.80, 0.71, and 0.76㎏, and those of hay were 0.11, 0.12, 0.10, and 0.14㎏ for control, Illite-, Bentonite-, and Kaolinite-supplemented groups, respectively. It tended to be higher in clay mineral-supplemented groups than in control group, however, no statistical significances were found. 3. The Proportion of CD2, CD4 as welt as CD8 of T cytotoxic/suppressor cell (19.67% vs 15.27 to 17.10%) was higher in control group than in clay mineral-supplemented groups.
A Gate Driver for High Voltage Thyristor Diode Switch
W.H.Kim,I.Kang,J.S.Kim,H.J.Ryoo,G.H.Rim,M.H.Cho,J.H.Nam,J.W.Kim 전력전자학회 1998 ICPE(ISPE)논문집 Vol.- No.-
Many semiconductive switches are operated in series for high voltage operation. The same number of gate drivers are needed to control all the switches, hence, the drivers cause high cost and system complexity.<br/> In this study, a simple and low cost gate driver for high voltage thyristor diode switches is investigated. This gate driver can operate several high voltage thyristor diode switches at the same time.
Laminin B1 Gene Expression of the Preimplantation Mouse Embryo During Blastocoel Formation
Kang, M. K.,Kim, K.,Kim, K. W.,Cho, W. K. 한국유전학회 1988 Genes & Genomics Vol.10 No.4
Laminin is an extracellular matrix glycoprotein consisting of three N-glycosylated polypeptides (A, B1, and B2), which is exclusively located in basement membrane. Laminin appears to be involved in the cell adhesion and differentiation, but the molecular action of laminin in the blastocoel formation of the mouse embryo is not yet determined. Therefore, the present study examines the regulation of laminin B1 gene expression in the preimplantation mouse embryos using RNA-blot hybridization with laminin B1 cDNA (389bp). Messenger RNA encoding laminin B1 was present in the mouse early blastocyst, and increased in the process of blastocyst expansion. Moreover, treatments with retinoic acid (0.1μM), cholera toxin (2㎍/㎖), and/or forskolin (10㎍/㎖) for 6hr in the early blastocysts resulted in increment of laminin B1 mRNA signal together with expansion of the blsatocoel volume. These data thus suggest that the cAMP-induced laminin B1 gene expression may play an important role in the blastocoel formation in situ.