KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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QTL for Quality Properties in the Milyang23 $\times$ Gyhobyeo Recombinant Inbred Lines by Different Locations

벼 밀양 23호 $\times$ 기호벼 재조합 자식계통의 지역에 따른 품질 특성 관련 QTL 분석

  • Kwak Tae-Soon (Life Science and Natural Resources College, Sangji University) ;
  • Yeo Jun-Hwan (Life Science and Natural Resources College, Sangji University) ;
  • Eun Moo-Young (National Institute of Agricultural Biotechnology, RDA) ;
  • Cha Young-Soon (National Institute of Agricultural Biotechnology, RDA)
  • 곽태순 (상지대학교 환경식물공학과) ;
  • 여준환 (상지대학교 환경식물공학과) ;
  • 은무영 (농촌진흥청 농업생명공학연구원) ;
  • 차영순 (농촌진흥청 농업생명공학연구원)
  • Published : 2004.12.01
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Abstract

The purpose of this study was to locate the quantitative trait loci (QTL) associated with quality properties in the recombinant inbred lines derived from the 'Milyang 23' and 'Gihobyeo' cross. Four quality-related traits; protein content, amylose content, fat acid content and sensory value were measured. Eight QTLs for protein content were detected on chromosomes 1 (two loci), 3, 6, 7 and 8 (three loci), each accounting for $6.0\%\~15.2\%$ of the phenotypic variation. Three QTLs for amylose content were detected on chromosomes 6 and 7 (two loci), each explaining from $7.3\%\;to\;24.4\%$ of the phenotypic variation. Six QTLs for fat acid content were detected on chromosomes 2 (two loci), 3, 6 (two loci) and 7, each explaining form $5.5\%\;to\;14.0\%$ of the phenotypic variation. Six QTLs for sensory value were detected on chromosomes 2, 6, 7(two loci) and 8 (two loci), each accounting for $5.5\%\~10.3\%$ of the phenotypic variation.

M/G RIL 164계통과 그 유전자지도를 이용하여 지역에 따른 벼의 품질과 관련된 양적형질 유전자좌(QTL)를 분석한 결과를 보면 다음과 같다. M/G RIL 164계통의 지역에 따른 단백질함량, 아밀로오스 함량, 지방산함량 및 식미평가치에 있어 빈도분포는 정규분포에 가까운 연속변이를 보였으며, 양친의 범위를 벗어나는 초월분리 현상을 나타내었다. 또한 지역에 따라 품질형질의 분포범위의 폭이 다양하게 나타났으며, 단백질함량은 원주>익산>대구의 순으로, 아밀로오스함량, 지방산함량 및 식미평가치는 대구>익산>원주의 순으로 나타났다. 품질에 관련된 QTLs분석에 있어 단백질함량과 관련하여서는 8개의 QTLs를 확인하였으며, 1번 염색체에서 2개, 3번, 6번, 7번 염색체에서 각각 1개, 8번 염색체에서 3개의 QTLs를 확인할 수 있었으며, 이들 8개의 QTLs가 설명할 수 있는 표현형 변이는 $6.0\~15.2\%$로 나타났다. 아밀로오스함량과 관련하여 6번 염색체에서 1개, 7번 염색체에서 2개의 QTLs를 확인하였다. 3개의 QTLs가 설명할 수 있는 표현형 변이는 $7.3\~24.4\%$로 나타났다. 지방산함량과 관련하여서는 2번과 6번 염색체에서 각각 깨, 3번과 7번 염색체에서 각각 1개의 QTLs를 분석하였으며, 6개의 QTLs로 설명할 수 있는 표현형 변이는 $5.5\~14.0\%$를 보였다. 식미평가치와 관련된 QTLs는 2번과 6번 염색체에서 각각 1개, 7번과 8번 염색체에서 각각 2개의 QTLs가 분석되었으며, 그 6개의 표현형 변이는 $5.5\~10.3\%$로 나타났다.

Keywords

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