Identification, Selection, and Response of Radiation Induced Towuti Mutant Rice (Oryza Sativa L.) in Drought Stress Conditions

Climate change with the impact of drought stress has become a major environmental problem for rice ( Oryza sativa L.). The use gamma ray radiation at dose 300 Gy is one way to develop tolerant varieties little characteristics Towuti variety. However, research still needed determine its resistance stress. This study aims identify characters selection, genotype and response mutant conditions. that can be used select genotypes under conditions are plant height, number leaves, tillers, SPAD chlorophyll value. best tolerance compared other genotypes. Tolerance in not caused by stay-green gene.