The main purpose for inducing mutation into rice crops is to increase the mutation rate in a short period of time and to develop new plant varieties with useful agronomical traits in order for sustainable food production to become a possibility. The occurrence of a spontaneous mutation frequency rate is very rare and exceptional, making it difficult for plant breeders to exploit. Commonly, mMutations are commonly induced by chemical (e.g., ethyl methane sulfonate) and physical (e.g., gamma radiation) mutagen treatment of both seed and vegetatively propagated crops. Here, movrer than 10,000 seeds of the rice variety Gohar were initially subjected to mutagenesis using ethyl methane sulfonate (EMS). The EMS-treated seeds were rinsed with deionized water, and then sown in the seedbed. A population of about 5,250 M1 plants was developed. At maturity, a single panicle was picked from each plant. The following year, to achieve 3,510 M2 plants, the seedlings selected from the nursery -grown panicles were grown in the field. Then, one panicle was chosen from each mature plant in M2 to get the M3 population. In the M4 population, the selection criteria were early maturity, high- fertility rate, dwarf growth habit, and plant type. Eventually, six plants possessing early maturing traits were selected for commercial release.
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