• 제목/요약/키워드: Curving resistance

검색결과 2건 처리시간 0.017초

수도 병해충에 대한 저항성품종의 육종 (Rice Breeding for the Resistance to the Disease and Insect Pests)

  • 허문회
    • 한국응용곤충학회지
    • /
    • 제22권2호
    • /
    • pp.74-83
    • /
    • 1983
  • Yield losses due to diseases and insect pests were mentioned and emphasized the efficiency of resistant cultivars in curving the yield losses and increasing chemical efficiency. Present status of resistance breeding for blast, bacterial leaf blight viruses, brown planthopper and white backed planthopper were introduced and the resistance sources for those are discussed. Breeding strategies for above items were presented. Specially for the blast resistance, discussions were made in some detail. With brief future prospects of resistance breeding in Korea, a suggestion was made for pathologists to make clear about whether the blast spores will be brought from mainland China as we see with Bph and Wbph or not.

  • PDF

철도차량의 주행저항 측정 및 평가방법 (Railway Rolling Stock - Test Methods for Running Resis)

  • 이찬우;허현무
    • 대한기계학회:학술대회논문집
    • /
    • 대한기계학회 2001년도 춘계학술대회논문집D
    • /
    • pp.985-988
    • /
    • 2001
  • Revision and establish of KS(Korean Standards) is currently actively discussed. It is just the time for a new world class standards under the new system with WTO(World Trade Organization). This paper is a part of "Researchs on the Standards in Railway rolling stock Field", as one of KS establish projects. The aim of this study is to define the requirements of railway rolling stock-test methods for running resistance. In the former KS, there is no items matched with this purpose. Therefore a new part of KS is proposed.

  • PDF