Euphytica

, Volume 202, Issue 2, pp 259–268 | Cite as

Accelerating the development of new submergence tolerant rice varieties: the case of Ciherang-Sub1 and PSB Rc18-Sub1

  • Endang M. Septiningsih
  • Nurul Hidayatun
  • Darlene L. Sanchez
  • Yudhistira Nugraha
  • Jerome Carandang
  • Alvaro M. Pamplona
  • Bertrand C. Y. Collard
  • Abdelbagi M. Ismail
  • David J. Mackill
Article

Abstract

Submergence is an escalating problem in many rice producing areas. A submergence tolerance gene, SUB1, derived from FR13A was previously introduced into six mega varieties through marker assisted backcrossing (MABC) with the final product selected at the BC2 or BC3 generation. Their phenotype was similar to the original varieties, but they could withstand complete inundation for up to 2 or 3 weeks. Several of these varieties have been released in South and Southeast Asia; nonetheless the development of additional submergence tolerant varieties is indispensable to provide farmers with diverse choices of varieties that are preferable for the local needs and to avoid ecological vulnerability due to planting only one variety across vast areas. To accelerate this effort, the SUB1 gene has now been introgressed into two new popular varieties from Indonesia and the Philippines, i.e. Ciherang and PSB Rc18, respectively, through MABC using only one backcross (BC1) with the previously developed IR64-Sub1 as the donor. Since this new donor is closely related to both recurrent parents, a more rapid MABC approach can be pursued due to the similarity of genetic backgrounds. Using this strategy, new submergence tolerant varieties Ciherang-Sub1 and PSB Rc18-Sub1 were developed in less than 2 years, presenting a promising approach to convert additional popular varieties in the future.

Keywords

Rice (Oryza sativaSubmergence tolerance SUB1 One backcross strategy Ciherang-Sub1 PSB Rc18-Sub1 

Supplementary material

10681_2014_1287_MOESM1_ESM.docx (14 kb)
Supplementary material 1 (DOCX 14 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Endang M. Septiningsih
    • 1
  • Nurul Hidayatun
    • 1
    • 2
  • Darlene L. Sanchez
    • 1
  • Yudhistira Nugraha
    • 3
  • Jerome Carandang
    • 1
  • Alvaro M. Pamplona
    • 1
  • Bertrand C. Y. Collard
    • 1
  • Abdelbagi M. Ismail
    • 1
  • David J. Mackill
    • 1
    • 4
    • 5
  1. 1.International Rice Research InstituteMetro ManilaPhilippines
  2. 2.Indonesian Center for Agricultural Biotechnology and Genetic Resource Research and Development (ICABIOGRAD)BogorIndonesia
  3. 3.Indonesian Center for Rice Research (ICRR)SubangIndonesia
  4. 4.Department of Plant SciencesUniversity of CaliforniaDavisUSA
  5. 5.MARS, Inc.McLeanUSA

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