Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Analysis of Productivity in Rice Plant -[I] Potential Grain Yield-

벼의 생산력 분석 -[1] 한계 수량-

  • Park, Hoon (Institute of Plant Environment, Office of Rural Development) ;
  • Kim, Yong-Sup (Institute of Plant Environment, Office of Rural Development) ;
  • Mok, Sung-Kyun (Institute of Plant Environment, Office of Rural Development)
  • 박훈 (농촌진흥청 식물환경연구소) ;
  • 김영섭 (농촌진흥청 식물환경연구소) ;
  • 목성균 (농촌진흥청 식물환경연구소)
  • Published : 1971.12.30
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Abstract

Potential grain yield of rice plant was calculated from potential grain yield of each leaf for two lines of IR 667 and two commercial varieties (Jinhung and Paldal). According to the percentage contribution of each leaf the pattern of potential grain yield of IR 667 lines could be grouped into the upper leaf-dependent type indicating fast senescence while that of commercial varieties could be grouped into the lower leaf-dependent type indicating shade resistance. The comparisons between potential grain yields and apparent grain yields indicate that the commercial varieties having a comparably unfavorable plant type thus remained much behind the potential yield. The significance of potential grain yield was discussed in relation to nutrio-physiology and breeding. Methods for potential yield determination were also discussed.

수원 213, 수원 214, 진흥 및 팔달의 한계수량을 각엽위엽의 한계 수량으로부터 계산하였다. 한계수량의 패턴이 각엽의 백분을 기여도에 따라 IR 667계통은 상위엽 의존형인 반면 진흥과 팔달은 하위엽 의존형으로 구분할 수 있었다. 이러한 패턴은 각기 조기노화 및 내음성과 관련될 것으로 추정되었다. 한계수량과 실수랑을 비교한 결과 초형이 비교적 불량한 진흥과 팔달은 보다 더 한계수량에 미달하였다. 한계수량이 갖는 영양생리 및 육종에 있어서의 의의를 검토하였으며 한계수량 측정방법도 논의하였다.

Keywords