한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)

  • 제68권4호
  • /
  • Pages.431-437
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  • 2023
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  • 0252-9777(pISSN)
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  • 2287-8432(eISSN)
한국작물학회 (The Korean Society of Crop Science)
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한반도 중북부 지대에서 국내 조 품종의 출수기 생태 특성

Ecological Characteristics of Spike Heading Time of Korean Foxtail Millet Cultivars in the North-central Region of the Korean Peninsula

  • 박세준 (고려대학교 생명과학대학 생명자원연구소) ;
  • 김보환 (고려대학교 생명과학대학 대학원 식물생명공학과) ;
  • 전혜원 (동북아생물다양성연구소) ;
  • 김이경 (고려대학교 생명과학대학 대학원 식물생명공학과)
  • Sei Joon Park (Institute of Life Science and Natural Resources, Korea University) ;
  • Bo Hwan Kim (Deparment of Plant Biotechnology, Graduate School, Korea University) ;
  • Hye Won Jun (Northeastern Asia Biodiversity Institute) ;
  • Yi Kyeoung Kim (Deparment of Plant Biotechnology, Graduate School, Korea University)
  • 투고 : 2023.11.14
  • 심사 : 2023.11.21
  • 발행 : 2023.12.01
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초록

본 시험은 강원도 북부 지대에서 대한민국 육성 조 품종의 재배모형을 설정하기 위하여 강원도 화천과 인제의 농가 포장에서 조생 품종 '미리메조'와 만생 품종 '황미차조', '삼다차조', 그리고 손가락조 품종 '손가락조 1호'에 대한 파종 시기를 달리하여 출수기 생태 특성을 분석하였다. 1. 강원도 북부지대에서 조 조생종의 출수기는 파종기가 5월 중순(5/15)일 때, 8월 초순으로 출수일수는 약 80일이었으며, 6월 하순(6/20) 파종 시에는 8월 하순으로 출수일수는 약 65일이었다. 2. 만생종은 5월 중순일 때, 8월 중하순(8/18~8/26)으로 약 100일이었으며, 6월 하순(6/20) 파종 시에는 9월 중순(9/8~9/15)으로 약 85일이었다. 3. 출수기 적산온도는 조생종은 파종기 5월 중순의 약 1,700℃에서 6월 중순의 약 1,500℃이었으며, 만생종은 약 2,100℃에서 약 1,900℃의 범위를 보였다. 4. 출수기 일장시간은 조생종은 14.0 h에서 13.2 h로, 만생종은 13.2 h에서 12.5 h의 범위였다. 5. 강원도 북부지대에서 국내 조 품종의 출수 한계기를 8월 하순으로 고려할 때, 출수기 한계 적산온도는 조생종은 약 1,500℃, 만생종은 약 2,000℃로 산정되었다. 6. 출수기간 중 일평균 기온이 증가함에 따라 출수일수는 단축되었으며, 두 특성 간에 부의 상관관계를 보였다. 7. 파종기 지연에 따른 출수기간 중 일평균 기온의 증가는 출수일수 단축 및 적산온도의 감소를 유도하였다.

This study evaluated the ecological characteristics related to spike heading time of three Korean foxtail millet cultivars, i.e., one early and two late maturities, and a finger millet cultivar in the north-central region of the Korean Peninsula, Kangwon Province. The changes in heading time occurred due to the changes in planting time from mid-May to late June. The heading time of the early-maturity cultivars was early August, with 80 days required for heading (DH) for the mid-May planting; late August, with 65 DHs for the late June planting; and mid-late August, with 100 DHs and mid-October, with 65 DHs, respectively, for the late-maturity cultivars. The accumulated temperature at heading time ranged from 1,700℃ of mid-May planting to 1,500℃ of late June planting in the early-maturity cultivars. In contrast, it ranged from 2,100℃ to 1,900℃ in the late-maturity cultivars. The photoperiod at heading time ranged from 14.0 h to 13.2 h in the early-maturity cultivars, whereas it was from 13.2 h to 12.5 h in the late-maturity cultivars. Considering that the limiting heading time of Korean foxtail millet and finger millet in the northern region of Kangwon Povince is late August, the limiting accumulated temperature at the heading time was evaluated to be approximately 1,500℃ and 2,000℃ for early and late-maturity cultivars, respectively. The mean daily temperature from planting to heading time showed a negative correlation with the DH, which was shortened with the increase in mean daily temperature. This suggests that delaying the planting time from May to June in the north-central region of the Korean Peninsula increases the mean daily temperature during vegetative growth periods, resulting in the decrease of the DH and the accumulated temperature.

키워드

과제정보

본 논문은 농촌진흥청 연구사업(과제번호 PJ015335)의 지원으로 이루어진 것임

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