Improving rice tolerance of submergence and salinity to cope with climate change in coastal areas of Vietnamese Deltas


Start date: 31 December, 2009 End date: 30 January, 2013 Project type: Pilot research cooperation projects (prior to 2013) Project code: 09-P01-VIE Countries: Vietnam Thematic areas: Agricultural production, Climate change, Lead institution: Agricultural Genetics Institute (AGI), Vietnam International Rice Research Institute (IRRI), Philippines Project website: go to website (the site might be inactive) Policy Brief: Policy Brief Project coordinator: Le Huy Ham Total grant: 4,950,000 DKK Project files:

Project summary

The project contributes to enhancing and sustaining future livelihoods and food security in Vietnam vis-a-vis climate change. It aims at developing adapted, submergence- and salt-tolerant rice varieties, and disseminating them in coastal zones of the Red River and Mekong River Deltas, areas which are among the hotspots for agricultural losses caused by sea level rise. An innovative strategy based on marker-assisted backcrossing (MABC), will be used to transform popular varieties into versions that can tolerate submergence and salinity, while maintaining their original characteristics preferred by farmers and consumers. It is expected that at the end of the project, 2 such varieties will be developed, validated for adaptation at target sites. These sites are identified via geo-spatial analysis and hydrological characterization as a means to assess regional vulnerability of rice production. The project will be coordinated by AGI. Close interaction between Vietnamese and international institutions will penetrate through all levels of activities, from concerted lab studies to cooperation on environmental characterization. Vietnamese staff members and students will spend extended working terms at IRRI and Denmark while IRRI scientists will regularly travel to Vietnam. Several trainees and students will participate in a degree training on MABC. Results of the project will be published in Vietnamese and international journals.


Genotyping with SSR markers at IRRI involved cross combinations of
BC3FI of Bacthom x IR64-Subl, and cross combinations from BC3F2
involving Bacthom xFL478, Q5DB x IR64-Subl, Q5DB x F1478,
OM6976 x IR64-Subl, OM6976 xFL478, AF996 x IR64-Subl and
AF996 xFL478. The aim is to introduce submergence tolerance (Subl
from IR64-Subl) and salt tolerance (Saltol from FL478) into
Vietnamese varieties using marker-assisted backcrossing. Researchers
General Conditions, Appendix 6a: Project Completion Report, page 10
were able to select polymorphic markers between parental lines and
use them together with foregound and flanking markers provided by
IRzu, and were successfuly able to generate the desired genotypes.

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