Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 421

Full Length Research Paper

Rapid and high-precision marker assisted backcrossing to introgress the SUB1 QTL into the Vietnamese elite rice variety

Tran Dang Khanh
  • Tran Dang Khanh
  • Department of Molecular Biology, Agricultural Genetics Institute, Hanoi, Vietnam.
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Le Hung Linh
  • Le Hung Linh
  • Department of Molecular Biology, Agricultural Genetics Institute, Hanoi, Vietnam.
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Ta Hong Linh
  • Ta Hong Linh
  • Department of Molecular Biology, Agricultural Genetics Institute, Hanoi, Vietnam.
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Le Huy Ham
  • Le Huy Ham
  • Department of Molecular Biology, Agricultural Genetics Institute, Hanoi, Vietnam.
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Tran Dang Xuan
  • Tran Dang Xuan
  • Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Japan.
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  •  Accepted: 28 September 2012
  •  Published: 28 February 2013

Abstract

 

 

Submergence stress regularly influences about 15 million hectares of rice growing areas in South and Southeast Asia. Vietnam is one of the most vulnerable countries affected by submergence stress in Asia. Submergence caused by typhoons and floods is one of the major reasons for rice production losses in this country. A majorquantitative trait locus (QTL) on chromosome 9, SUB1, has provided the opportunities to apply marker-assisted backcrossing (MABC) to develop submergence tolerant for an elite variety that is popularly grown in Vietnam. Improving rice tolerance with submergence is vital to minimize the risks from submergence stress. In this study, we reported a successful application of MABC method to select a line number 19 in BC2F1populations that has genetic background up to 89.8%.

 

Key words: Bac Thom 7 (BC7), marker-assisted backcrossing (MABC), submergence tolerance.