한국습지학회지 (Journal of Wetlands Research)

  • 제16권4호
  • /
  • Pages.363-370
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  • 2014
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  • 1229-6031(pISSN)
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  • 2384-0056(eISSN)
한국습지학회 (Korean Wetlands Society)
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CO2농도와 온도 상승이 한국의 주요 재배 벼품종의 생육과 생산량에 미치는 영향 -오대벼와 새추청벼-

Effects of elevated CO2 concentration and increased temperature on the growth and crop yield of rice (Oryza sativa) cultivars in Korea -cv. Odaebyeo and cv. Saechucheongbyeo-

  • 투고 : 2014.06.26
  • 심사 : 2014.08.05
  • 발행 : 2014.11.30
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초록

온난화가 진행되면, 우리나라에서 재배되고 있는 주요 벼의 생육과 생산량이 어떻게 변화되는지를 알아보기 위해, 북부지방과 중부지방에 각각 가장 많이 재배되는 오대벼와 새추청벼의 유식물을 각각 대조구, 온도 상승구 및 $CO_2$+온도 상승구에서 재배하여 그 결과를 비교하였다. 새추청벼의 지상부생물량, 지하부생물량, 총 생물량, 개체당 이삭무게 그리고 낟알의 숙성 비율은 온도 상승구에서, 오대벼는 $CO_2$+온도 상승구에서 가장 높았다. 새추청벼와 오대벼의 개체당 이삭수는 환경구배 간 차이가 없었다. 새추청벼의 이삭당 낟알수는 환경구배 간 차이가 없었고, 오대벼의 것은 $CO_2$+온도 상승구에서 가장 많았다. 새추청벼의 낟알 한 개의 무게는 $CO_2$+온도 상승구, 오대벼의 것은 온도 상승구와 $CO_2$+온도 상승구에서 가장 무거웠다. 새추청벼의 분얼수는 대조구와 온도 상승구, 오대벼의 것은 대조구에서 가장 많았다. 본 연구를 종합적으로 정리해보면 새추청벼는 대조구보다 온도만 상승했을 때 잘 자랐고 곡물 생산량이 증가했지만 $CO_2$ 농도와 온도가 같이 상승했을 때는 차이가 없었다. 그리고 오대벼는 대조구보다 $CO_2$ 농도와 온도가 같이 상승했을 때 잘 자랐고 생산량이 증가했다. 앞으로 지구온난화의 영향으로 $CO_2$ 농도와 온도가 높아진다면, 새추청벼는 현재와 곡물수확량의 차이는 없겠지만 그에 반해 오대벼는 곡물수확량은 높아질 것이다. 따라서 지구온난화로 인한 기후변화가 지속된다면 곡물수확량을 고려한 종에 따른 벼 재배적지의 선정이 신중히 결정되어야 할 것으로 판단된다.

We grew seedlings of Saechucheongbyeo and Odaebyeo of rice cultivars that are cultivated dominantly in the northern and middle regions of Korea under control(ambient condition), ambient $CO_2$ concentration+elevated temperature, and elevated $CO_2$ concentration+elevated temperature in order to study how growth responses and crop yield of major rice of Korea change as the global warming proceeds and compared the results. Aboveground biomass, belowground biomass, total biomass, and panicles weight per individual and ripended grain rate of cv. Saechucheongbyeo were the highest under control, but those of cv. Odaebyeo were the highest under elevated $CO_2$ concentration+elevated temperature. There was no difference in the number of panicles per individual of cv. Saechucheongbyeo and cv. Odaebyeo in these experiments. There was no difference in the number of grains per panicle of cv. Saechucheongbyeo among three environmental gradients, but that of cv. Odaebyeo was the highest under elevated $CO_2$ concentration+elevated temperature. Weight of a grain of cv. Saechucheongbyeo was highest under elevated $CO_2$ concentration+elevated temperature, but that of cv. Odaebyeo was the higher under ambient $CO_2$ concentration+elevated temperature and elevated $CO_2$ concentration+elevated temperature. Thus, if global warming continues in Korea, selection of rice cultivation varieties must be chosen carefully for commendation.

키워드

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