BRRI developed two new variety of rice suitable for salinity and flood-prone areas. The National Seed Board has recently approved these two varieties developed by the Bangladesh Rice Research Institute (BRRI). The varieties, first of their kind in Bangladesh, are suitable for the areas having problems of flood and salt and well cultivable during boro season .

After research for five years, the institute developed the BRRI dhan 46 for flood prone areas and BRRI dhan 47 for salinity-prone areas. BRRI dhan 46 has been developed from the cross of BR-11 like Swarnalata and the line showed similarity with Nizarsail. It was suggested for delay transplanting from September 10 to 15 with thirty days old seedlings in flood prone areas.