Keywords: آگارز با ذوب پایین; High hydrostatic pressure; Rice; Mutagenesis; DNA strand damage; DMN; dimethylnitrosamine; HHP; high hydrostatic pressure; SDW; sterile distilled water; LMA; low-melting agarose; NMA; normal-melting agarose; ENU; ethylnitrosourea; UV; ultraviolet;