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형질전환 벼 이용 품종 조기개발 체계 확립

Establishment of a New Breeding Scheme for Rapid Release of Variety Using bar Gene Transformed Rice

  • Won, Yong-Jae (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Yi, Gi-Hwan (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Cho, Jun-Hyeon (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Ko, Jong-Min (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Park, Hyang-Mi (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Han, Chang-Deok (Division of Applied Life science, Plant Molecular Biology & Biotechnology Research Center, Gyeongsang National University) ;
  • Yang, Sae-Jun (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Kim, Soon-Chul (National Yeongnam Agricultural Experiment Station, RDA) ;
  • Nam, Min-Hee (National Yeongnam Agricultural Experiment Station, RDA)
  • 발행 : 2004.03.01

초록

형질전환 식물체를 직접 이용하기에는 후대에 유전적인 고정 및 포장검정이라는 문제가 대두되는데, 이를 해결하기 위하여 본 연구는 바스타저항성 유전자가 도입된 벼와 직파적 응성 계통을 교잡한 후 약배양에 의한 형질전환체 고정 등 기존 육종체계와 연계하여 제초제 저항성 직파적응 계통을 조기에 육성할 수 있는 체계를 확립하고자 수행하였다. 제초제 저항성 직파적응 계통을 조기에 육성하고자 1999년 동계에 교배된 동진벼 Ds15(Ba $r^{R}$)/주남벼 등 5조합으로부터 2000년 $F_1$을 양성하고, 이들을 PCR분석으로 제초제 저항성 유전자 bar도입을 확인한 후 약배양을 실시하여 얻어진 1,508개의 재분화 식물체 중 제초제 저항성 유전자가 도입된 169개체 ( $A_2$)에서 채종하였다. 이들을 2001년 포장에 공시하여 42계통을 선발하고,2002년에 동진벼 Ds15 (Ba $r^{R}$)/주남벼 조합에서 수량 등 주요 농업형질이 우수한 7계통을 생산력 검정시험에 공시한 결과 제초제 저항성이면서 직파적응성 등 기타 농업형질이 우수한 YR23235Acp79를 선발하여 밀양 204호로 계통명을 부여하였다. 결과적으로 형질전환체를 이용하여 교배부터 계통선발까지 3년 만에 목적하는 계통을 조기에 육성할 수 있는 생력육종체계가 확립되었다.

This study was carried out to establish a new breeding scheme which is connected with conventional breeding method and anther culture method. To develop a herbicide resistant and direct seeding rice, $F_1$ plants were subjected to anther culture and regenerated plants from 5 crosses were studied to confirm the introduction of bar gene. After PCR analysis, we selected 227 plants which were carrying herbicide resistance gene (bar) out of 1,508 regenerated plants from anther culture. Among 169 $A_2$ lines carrying herbicide resistant gene from 5 crosses including YR23235 (Dongjin Ds3(Ba $r^{R}$)/ Milyang165), 42 lines that had superior agronomic characters were selected for further research. Among them, YR23235Acp79 which showed herbicide resistance, direct seeding adaptability and superiority in major agronomic characters was named Milyang 204. This breeding scheme proved that the anther culture of $F_1$ plants crossed between transformant and cultivar or transform ant alone could be utilized in breeding programs for a rapid progeny fixation and development of a variety.y.

키워드

참고문헌

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피인용 문헌

  1. Agronomic Characteristics of Transgenic Japonica Rice 'Milyang 204' with Herbicide Resistance Gene (bar) vol.32, pp.2, 2005, https://doi.org/10.5010/JPB.2005.32.2.085