The main purpose for mutation induction in rice crop, is to increase the mutation frequency rate in ‎a short period of time, in developing new plant varieties with useful agronomical traits in order for ‎sustainable food production to become a possibility. Exploitation of spontaneous mutation ‎frequency rate is veryboth rare and exceptional, being difficult to exploit by the plant breeders. ‎Commonly, mutations are induced by chemical (e.g. ethyl methane sulfonate) and physical (e.g. ‎gamma radiation) mutagen treatment of both seed and vegetatively propagated crops. Here, over ‎‎10,000 seeds of 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 5250 M1 plants was developed. At maturity, a single panicle (one ‎ripening panicle) was picked from each plant. The Nextfollowing year, to achieve 3510 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 trait were selected for commercial release.‎

The text above was approved for publishing by the original author.

Previous       Next

Try for free

Please enter your message
Please choose what language to correct

Check out our Google Docs proofreading add-on!

eAngel.me

eAngel.me is a human proofreading service that enables you to correct your texts by live professionals in minutes.