KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Development of RAPD Marker Related to Brown Planthopper Resistance Gene Derived from Rice Cultivar, Cheongcheongbyeo

청청벼에서 유래한 벼멸구 저항성관련 RAPD Marker의 개발

  • Seo Ji-Hun (Department of Agronomy Graduate School, Kyungpook National University) ;
  • Kim Kyung-Min (Department of Environmental Horticulture, Sangju National University) ;
  • Kim Suk-Man (Department of Agronomy Graduate School, Kyungpook National University) ;
  • Sohn Jea-Keun (Department of Agronomy Graduate School, Kyungpook National University)
  • 서지훈 (경북대학교 농업생명과학대학) ;
  • 김경민 (상주대학교 환경원예학과) ;
  • 김석만 (경북대학교 농업생명과학대학) ;
  • 손재근 (경북대학교 농업생명과학대학)
  • Published : 2005.12.01
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Abstract

This study was carried out to select DNA markers closely linked to brown planthopper (BPH) resistance gene originated from a rice cultivar 'Cheongcheong­byeo'. For the mapping of resistant gene to BPH, a doubled-haploid (DH) population was developed by anther culture of $F_1$ plants from a cross 'Cheongcheong­byeo/Nagdongbyeo'. In BPH bioassay and marker screen­ing for the DH population, the segregation of resistant and susceptible plants to BPH fitted to a 1:1 ratio. A total of 310 RAPDs of 520 markers showed polymorphism in parental survey using 'Cheongcheongbyeo' and 'Nag­dongbyeo'. In the analysis of relationship between BPH resistance and marker pattern for 40 DH lines, the OPE16 produced a specific dominant fragment, 700 bp, which was closely linked with BPH resistance gene of 'Cheong­cheongbyeo'. Based on the linkage analysis using 7 markers, BPH resistance of 'Cheongcheongbyeo' was mapped on chromosome 12, which was closely linked with $OPE16_{700}$ at a distance of 4.6 cM.

본 연구에서는 벼멸구 저항성 품종인 '청청벼'와 감수성이면서 자포니카형 벼인 '낙동벼'를 교배한 DH 계통 및 $F_2$집단을 이용하여 벼멸구 저항성과 DNA marker와의 관계를 분석하였다. 1. 520개의 RAPD marker를 이용하여 양친에 다형성을 보이는 310개의 marker를 찾았고 이들을 대상으로 한 BSA를 통해 벼멸구 저항성과 관련있을 것으로 보이는 17개의 marker를 선발하였다. 2. 벼의 12번 염색체상에 위치한 38개의 SSR marker를 사용하여 모${\cdot}$부본에 대한 다형성 검정을 실시한 바, 17개의 SSR marker를 선발할 수 있었다. 3. BSA를 통해 선발된 17개의 RAED marker와 DH 계통의 벼멸구 저항성과의 관계를 분석하여 벼멸구 저항성과 가장 밀접하게 연관된 $OPE16_{700}$을 선발하였다. 4. SSR marker 및 OPE16과 65 DH 계통의 벼멸구 저항성과의 연관분석을 실시한 결과 OPE16이 벼멸구 저항성 유전자와 4.6cM 거리로 가장 밀접하게 연관되어 있는 것으로 나타났다.

Keywords

References

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