Comparison agronomical characteristics, yield and grain quality of rice mutant's tolerance to salinity

In order to evaluation of agronomical traits, grain yield and grain quality of rice mutants that were tolerant to salinity, one experiment was done in salinity condition the Feridonkenar, as a complete randomly block deign with three replicates in 2017. Ten selected lines from 7th mutant's generation (M7) with standard salt tolerance variety (FL478) and sensitive variety (Taqqing), and three parents ( Tharom Mahali, Hasani and Anbarboo), was used. The recorded traits was: 50% days to flowering, plant height, yield components and grain yield , milling recovery, full grain percent, grain elongation ratio, amylose content and gelatinization temperature. The results showed that deference between genotypes was mostly significant for all agronomic traits and grain quality. The plant height redused in mutants in compared with parents. All most of mutants were earlier maturity than parents. The panicle number per hill was different between 11-14 panicles per hill. The highest thousand kernel weight was devoted to line 1117, and the lowest it was belong to line 221 (23.7gr). The best milling recovery was 70 percent and four mutants had grain elongation ratio more than two in which it was super than parents and checks. The range of grain yield of mutants was different between 2500-7000 kg/ha. The highest grain yield was related to mutant 3218 (7091.5 kg/ha) and the lowest was devoted to mutant 126 (2565.8 kg/ha).