Alexis leads all aspects of IRRI’s breeding work in East and Southern Africa (ESA).
In close collaboration with other IRRI breeders, molecular breeders, pathologists, physiologists, and national partners, Alexis develops new products for lowland rice ecologies and their major market segments in East and Southern Africa. This includes excellent grain quality and tolerance to major stresses such as drought, bacterial leaf blight, blast, and cold.
Alexis also helps organize the Annual Rice Breeders Workshop for IRRI – East and Southern Africa, which he previously attended as a participant. He sees the biggest challenge for rice breeding in Africa is successfully combining high quality traits with favorable agronomic traits that ensure high yields and grain quality.
He is also responsible for managing the IRRI office and overseeing other projects such as PROIRRI in Mozambique.
- Rice breeding
- Participatory variety trials
- PhD on rice salt stress improvement, Catholic University of Louvain-La-Neuve, Belgium, Belgium
- Masters on rice salt stress improvement, Catholic University of Louvain-La-Neuve, Belgium (2001)
- Bachelor of Agricultural Science, National University of Burundi, Burundi (1993)
- Scientist II, Rice breeding, IRRI, Mozambique (May 2013-present)
- Collaborative Research Scientist, Rice breeding, IRRI (2012-2013)
- Post doctoral fellow, Rice breeding, IRRI, Mozambique (2009-2012)
- Consultant at ISAR Rice program, Rwanda Agricultural Research Institute, Rwanda (2006-2009)
- Professor – genetics and plant improvement; and Director of the project: Rice breeding and improvement in the middle altitude marshland in Burundi, University of Burundi, Burundi (2006-2006)
- Master and PhD research on rice (Oryza sativa L.) salt stress improvement, Catholic University of Louvain-La-Neuve, Belgium (2000-2006)
- Assistant-Professor at genetics and plant improvement department; and Researcher at the project: Rice breeding and improvement in the middle altitude marshland in Burundi, University of Burundi, Burundi (1993-1999)
SELECTED PUBLICATIONS (RECENT)
- Quinet M., Ndayirajige A., Lefèvre I., Lambillotte B., Dupont-Gillain C.C. & S. Lutts, 2010. Putrescine differently influences the effect of salt stress on polyamine metabolism and ethylene synthesis in rice cultivars differing in salt resistance". Journal of Experimental Botany, Vol. 61, No 10: 2719-2733.
- Ndayiragije A. and Lutts S. 2007. Long term exogenous putrescine application improves grain yield of a salt-sensitive rice cultivar exposed to NaCl. Plant and Soil, 291(1-2): 225-238.
- Ndayiragije A. and Lutts S. 2006. Exogenous putrescine reduces sodium and chloride accumulation in NaCl-treated calli of a salt-sensitive rice cultivar I Kong Pao. Plant Growth Regulation, 48: 51-63.
- Ndayiragije A. and Lutts S. 2006. Do exogenous polyamine have an impact on the response of a salt-sensitive rice cultivar to NaCl? Journal of Plant Physiology, 163(5): 506-516.
Dr. Alexis Ndayiragije
Scientist II-Rice Breeder, IRRI-East and Southern Africa Hub
Mozambique IRRI Country Office
+258 2146 2508