Edilberto Redoña

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redona-contactEd is the former global coordinator of the International Network for Genetic Evaluation of Rice (INGER) and breeder of rice tolerant to higher temperatures.

At INGER, the world’s flagship varietal evaluation and exchange network, he coordinated the multilateral sharing, testing, and utilization of rice breeding lines, through the conduct of international nurseries for major rice ecosystems and biotic and abiotic stresses. Ed nurtured partnerships with breeding programs of international centers and national agricultural research systems in over 60 countries to ensure the widest dissemination of elite rice breeding products for greatest impact.

As a rice breeder, Ed initiated a new international variety development effort for tolerance to hot and dry, and hot and humid environments. This is to mitigate the negative effects of higher temperatures resulting from climate change. QTLs underlying heat tolerance and avoidance in rice are being mapped in the genetic background of Asia’s rice mega-cultivars for eventual use in marker aided breeding of elite high-yielding varieties (HYVs).

To enhance the capacity of breeding programs by developing the next generation of rice breeders, Ed coordinated the Rice Breeding Course at IRRI that has graduated 123 public and private sector breeders from 27 countries since 2007. He also advised graduate students in plant breeding and genetics as adjunct professor of the University of the Philippines Los Baños (UPLB), and is active in the international plant breeding community as Secretary General of the Society for the Advancement of Breeding Research in Asia and Oceania (SABRAO).


  • Rice breeding (high temperature) and genetics
  • Rice genetic resources exchange, evaluation, release, and registration
  • Plant breeding capacity development


  • PhD in Genetics, University of California, Davis, USA (1995)
  • MSc in Genetics, University of California, Davis, USA (1993)
  • MSc in Agronomy-Plant breeding & Genetics, University of the Philippines Los Baños, Philippines (1984)
  • BSc in Agriculture-Agronomy, Silliman University, Dumaguete, Philippines, magna cum laude (1979)


  • Senior Scientist (Plant Breeding) and Coordinator (INGER), IRRI (2006-2014)
  • Adjunct Associate Professor, UPLB (2002-present)
  • Deputy Head, Plant Breeding and Biotechnology Division, IRRI (2008-2010)
  • Deputy Executive Director for (R&D)/Scientist III, PhilRice (2001-2006)
  • Chief Science Research Specialist/Hybrid Rice Program Leader, PhilRice (1997-2000)
  • Senior/Supervising Science Research Specialist, PhilRice (1990-1997)
  • Research Assistant III, INGER, IRRI (1985-1990)
  • Research Assistant/Senior Research Assistant, Institute of Plant Breeding, UPLB (1979-1985)


  • Outstanding R&D Award for Basic Research, National Academy of Science and Technology of the Philippines (2010)
  • Outstanding Scientific Support Team, Consultative Group for International Agricultural Research (CGIAR), USA (2008)
  • Outstanding Sillimanian Award, Silliman University, Philippines (2006)
  • Plaque of Appreciation for Outstanding Leadership, Crop Science Society of the Philippines (2006)
  • M.S. Swaminathan Outstanding Research Award, Los Baños Science Community, Philippines (2003)
  • Rank of Scientist III, Philippine Scientific Career System, Department of Science and Technology (2002)
  • AFMA Outstanding National R&D Award, Bureau of Agricultural Research, Philippine Department of Agriculture (2002)
  • Plaque of Recognition as Scientist III, Bureau of Agricultural Research, Philippine Department of Agriculture (2002)
  • Outstanding Book Award, National Academy of Science and Technology of the Philippines (2002)
  • Rotary International/Crawford Fund Fellowship, Australia (2001)
  • Gawad Saka National Outstanding Employee for Research, Philippine Department of Agriculture (1999)
  • Outstanding Young Scientist (Genetics), National Academy of Science and Technology of the Philippines (1998)
  • Philippine Agriculture Resources Research Foundation, Inc. Development Award, Los Baños Science Community, Philippines (1998)
  • National Research Council of the Philippines election, Philippine Department of Science and Technology (1998)
  • Rockefeller Foundation Fellowship, USA (1990-1995)
  • Best research paper awards from the Crop Science Society of the Philippines (2009, 2006, 1998), Philippine Society for the Advancement of Genetics (2008), Philippine Department of Agriculture-Bureau of Agricultural Research (2005, 2002), Pest Management Council of the Philippines (2002), Federation of Asian and Oceanian Biochemists and Molecular Biologists (1997)


  1. Ye C, S Fukai, ID Goodwin, H Koh, R Reinke, Y Zhou, Z Lambrides, W Jiang, P Snell and E Redoña. 2010. A QTL controlling low temperature induced spikelet sterility in rice. Euphytica DOI 10.1007/s10681-010-0226.8.
  2. Thangapandian R, T Jayaraj, E Redoña and S Sierra. 2010. Development of heat-tolerant breeding lines and varieties in rice. Indian J Plant Genetic Resources 23:1-3.
  3. Lapitan VC, ED Redoña, T Abe and DS Brar. 2009. Mapping of quantitative trait loci for grain cooking and eating quality using a doubled haploid population from the cross of indica/japonica cultivars of rice (Oryza sativa L.). Crop Science 49:1620-1628.
  4. Wassmann R, SVK Jagadish, K Sumfleth, H Pathak, G Howell, A Ismail, R Serraj, E Redona, RK Singh and S Heuer. 2009. Regional vulnerability of climate change impacts on Asian rice production and scope for adaptation. Advances in Agronomy 102:91-133.
  5. Wassmann R, SVK Jagadish, S Heuer, A Ismail, E Redona, R Serraj, RK Singh, G Howell, H Pathak and K Sumfleth. 2009. Climate change affecting rice production: the physiological and agronomic basis for possible adaptation strategies. Advances in Agronomy 101:59-122.
  6. Redoña ED, NL Manigbas, MA Laza, SN Sierra, VI Bartolome, LA Nora, WV Barroga and JM Noriel. 2009. Identifying heat-tolerant rice genotypes under different environments. SABRAO J Breeding and Genetics 41 (special suppl): Published in CD (ISSN 1029-7073).
  7. Lapitan VC, ED Redoña, T Abe and DS Brar. 2009. Molecular characterization and agronomic performance of DH lines from the F1 of indica and japonica cultivars of rice (Oryza sativa L.). Field Crops Research 112:222-228.
  8. Singh RK, ED Redoña and L Refuerzo. 2009. Varietal improvement for abiotic stress tolerance in crop plants: Special reference to salinity in rice. In: Pareek A, Sopory SK, Bohnert HJ, Govindjee (Eds.), Abiotic Stress Adaptation in Plants: Physiological, Molecular and Genomic Foundation, Springer, Dordrecht, The Netherlands. pp. 387-415.
  9. Borines LM, EO Espejo, RT Piamonte, CM Vera Cruz and E Redoña. 2008. Development of bacterial blight resistant Mestizo hybrid maintainer and restorer lines through marker-aided backcrossing. Ann. Tropical Res. 30:1-21.
  10. Perez LM, ED Redoña, MS Mendioro, CM Vera Cruz and H Leung. 2008. Introgression of Xa4, Xa7 and Xa21 for resistance to bacterial blight in thermosensitive genetic male sterile rice (Oryza sativa L.) for the development of two-line hybrids. Euphytica 164:627-636.
  11. Lapitan VC, DS Brar, T Abe and ED Redoña. 2007. Assessment of genetic diversity of Philippine rice cultivars carrying good quality traits using SSR markers. Breeding Science 57:263-270.