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호밀 염색체 도입 밀 계통 선발을 위한 RAPD, GISH 및 FISH분석
이준옥,고종민,박순기,도금숙,신동일,한상익,현종내,서봉보,정일경 한국육종학회 2003 한국육종학회지 Vol.35 No.4
Rye (Secale cereale L.) is known as an important source of useful genes for the improvement of resistance to rust, powdery mildew and tolerance to drought and cold on wheat (Triticum aestivum L.). We describe the identification and utilization of rye genome- specific DNA markers, OPH20-1494 bp and OPC10-1012 bp, by RAPD analysis. These markers were used to detect rye chromatin among 467 BC1F6 lines derived from the backcross of the F1 hybrid of wheat cv. Olmil and rye cv. Paldanghomill. Thirty-two lines out of 467 BC1F6 population possessed the part of rye genome. Moreover GISH and FISH analysis confirmed the presence of rye chromosome fragment on wheat background in these lines. Therefore these rye-specific markers can be used effectively in the breeding program for introgression of rye chromatin into wheat.
이준옥,김철호,김광택,권광희,송재원,Lee, Jun-Ock,Kim, Cheol-Ho,Kim, Kwang-Taek,Kwon, Kwang-Hee,Song, Jae-Won 한국광학회 2003 한국광학회지 Vol.14 No.2
본 논문은 금속박막과 결합된 측면 연마 단일 모드 광섬유를 이용한 편광기에 관하여 이론 및 실험 연구 결과를 보고한다. 금속 박막의 두께와 상부 유전체의 굴절률이 소자특성에 미치는 영향을 직교 모드이론으로 분석하였다. 이론적 예측을 토대로 광통신파장에서 편광 소멸비가 40 ㏈, 그리고 삽입 손실이 0.5 ㏈를 가지는 편광기를 구현하였다. We report theoretical and experimental investigation of a polarizer made of single mode side-polished fiber covered with a metal film. The influence of the metal film thickness and the refractive index of overlay on the device performance has been analyzed in terms of the normal mode theory. Based on the theoretical prediction, a polarizer with 40 ㏈ of polarization extinction ratio and 0.5 ㏈ insertion loss at optical communication wavelength has been realized.