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Deterioration of Agronomic Characteristics of Drought-Resistant GM Rice (CaMsrB2-8)

가뭄저항성 GM벼(CaMsrB2-8)의 농업적 특성의 퇴화 가능성 검정

  • Kim, Bo-Ra (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University) ;
  • Son, Jin-Hwan (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University) ;
  • Kim, Hye-Ryun (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University) ;
  • Ham, Jung-Kwan (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University) ;
  • Dhungana, Sanjeev Kumar (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University) ;
  • Park, Soon-Ki (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University) ;
  • Shin, Dong-Hyun (Division of Plant Biosciences, School of Plant Biosciences, Kyungpook National University)
  • 김보라 (경북대학교 농업생명과학대학 응용생명과학부 식물생명과학전공) ;
  • 손진환 (경북대학교 농업생명과학대학 응용생명과학부 식물생명과학전공) ;
  • 김혜련 (경북대학교 농업생명과학대학 응용생명과학부 식물생명과학전공) ;
  • 함정관 (경북대학교 농업생명과학대학 응용생명과학부 식물생명과학전공) ;
  • ;
  • 박순기 (경북대학교 농업생명과학대학 응용생명과학부 식물생명과학전공) ;
  • 신동현 (경북대학교 농업생명과학대학 응용생명과학부 식물생명과학전공)
  • Received : 2013.04.02
  • Accepted : 2013.05.27
  • Published : 2013.06.30

Abstract

The purpose of this study is to observe the growth habit and investigate a possibility of cultivating the GM rice (CaMsrB2-8) as a rice cultivar having drought resistance. Germination viability test showed that there was no significant difference between the drought-resistant GM(CaMsrB2-8) and non-GM (Ilmi) rice which was the parent variety at the GM rice. All the seeds of CaMsrB2-8 and Ilmi germinated after 6 days. Viviparous germination was not found in CaMsrB2-8 and Ilmi that was grown in greenhouse at $23{\pm}2^{\circ}C$ with water spraying for 40 days. Ratooning of CaMsrB2-8 and Ilmi was observed in 7-14 days and found uniform in field condition. CaMsrB2-8 seemed to grow faster than Ilmi. But CaMsrB2-8 and Ilmi were similar in 14-21 days. Both CaMsrB2-8 and Ilmi showed low seed shattering and more than 90% grains were ripened. All the seeds scattered in the paddy soil surface were not germinated after passing the winter. This study suggests that the drought-resistant GM rice was not significantly different with the parent variety of Ilmi in many agronomic characteristics such as wildness traits.

본 논문은 가뭄저항성 유전자를 도입한 GM벼(CaMsrB2-8)를 모품종 일미와 비교하여 잡초화 가능성의 여부를 판단하고자 실시하였다. GM벼(CaMsrB2-8)의 생육특성과 발아율 실험 결과 모품종 일미와 큰 차이를 보이지 않았고, 모든 종자는 6일 후 발아하였다. GM벼(CaMsrB2-8)와 일미의 수발아성 실험을 $23{\pm}2^{\circ}C$ 온실에서 충분한 물을 분무하여 40일간 진행한 결과 수발아는 발생하지 않았다. 라튜닝 후 GM벼(CaMsrB2-8)와 일미의 지상부 생장을 비교한 결과 7-14일 동안 일미보다 GM벼(CaMsrB2-8)의 성장이 빠른 것처럼 보였으나 그 이후 14-21일 동안에는 두 개체가 비슷한 성장세를 보였다. GM벼(CaMsrB2-8)와 일미의 탈립율은 두 개체가 비슷하였으며 등숙율 또한 90%이상으로 비슷한 수준을 보였다. 종자의 월동성을 조사한 결과 발아율 0%로 자연상태에서 월동 후 발아 가능성은 없을 것으로 보인다. 따라서 본 연구를 토대로 GM벼(CaMsrB2-8)에 도입된 내건성유전자는 벼의 농업적 특성을 변화시키지 않는 것으로 판단되며 따라서 GM벼(CaMsrB2-8) 재배 시 잡초화 되지는 않을 것으로 생각된다.

Keywords

References

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