지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.12
- 수록면
- 477 - 482 (6page)
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초록· 키워드
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Low-temperature germination is one of the major determinants for stable stand establishment in the rice direct seeding method in temperate regions and at high altitude areas. Quantitative trait loci (QTL) controlling low-temperature germinability in rice were identified using 96 introgression lines (ILs) derived from a cross between Oryza rufipogon and the Korean japonica cultivar, ‘Hwaseongbyeo’. The germination rate at 15℃ was measured to represent low-temperature germination and used for QTL analysis. The germination rate at 15℃ for 7 days of Oryza rufipogon and Hwaseongbyeo was 93.3 and 28.7%, respectively, and that of progenies ranged from 0 to 48%. A linkage map was constructed using 135 simple sequence repeat (SSR) markers. Five putative QTLs associated with low-temperature germination were detected on chromosomes 1, 3, 4, 10 and 11. The QTL, qltg10 on chromosome 10 accounted for 19.2% of the total phenotypic variation for low-temperature germinability. Four additional QTL, accounted for 10.4 - 15.1% of the total phenotypic variation. The O. rufipogon alleles in all detected QTLs loci increased the low-temperature germination rate. No QTL associated with low temperature germinability has been detected near the qltg10 QTL in this study suggesting that qltg10 is a new QTL. The locus, qltg10 is of particular interest because of its independence from undesirable height and maturity effects. The DNA markers linked to the QTL for low temperature germinability would be useful in selecting lines with enhanced low temperature germinability in rice breeding program.
목차
Abstract
Ⅰ. Introduction
Ⅱ. Materials and methods
Ⅲ. Results
Ⅳ. Discussion
Acknowledgements
References
참고문헌 (14)
참고문헌 신청
Causse MA / 1994 / Saturated Molecular Map of the rice genome based on an interspecific backcross population / Genetics 138:1251~1274
Fujino K / 2004 / Mapping of quantitative trait loci controlling low-temperature germinability in rice (Oryza sativa L.). / Theoretical and Applied Genetics 108:794~799
Fujino K / 2008 / Molecular identification of a major quantitative trait locus, qLTG3-1, conferring low-temperature germinability in rice / Proceedings National Academy of Sciences 105:12623~12628
Hou MY / 2004 / Inheritance and QTL mapping of low temperature germinability in rice (Oryza sativa L.) / Acta Genetics Sinica 31(7):701~706
Lou Q / 2007 / A major QTL associated with cold tolerance at seedling stage in rice (Oryza sativa L.) / Euphytica 158:87~94
Fujino K / 2004 / Mapping of quantitative trait loci controlling low-temperature germinability in rice (Oryza sativa L.). / Theoretical and Applied Genetics 108:794~799
Fujino K / 2008 / Molecular identification of a major quantitative trait locus, qLTG3-1, conferring low-temperature germinability in rice / Proceedings National Academy of Sciences 105:12623~12628
Hou MY / 2004 / Inheritance and QTL mapping of low temperature germinability in rice (Oryza sativa L.) / Acta Genetics Sinica 31(7):701~706
Lou Q / 2007 / A major QTL associated with cold tolerance at seedling stage in rice (Oryza sativa L.) / Euphytica 158:87~94
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UCI(KEPA) : I410-ECN-0101-2014-480-000601717