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Physical and chemical mutagenesis.

Andrea Kodym1, Rownak Afza

  • 1Plant Breeding Unit, FAO/IAEA Agriculture and Biotechnology Laboratory, International Atomic Energy Agency Laboratories, Seibersdorf, Austria.

Methods in Molecular Biology (Clifton, N.J.)
|September 23, 2003
PubMed
Summary

Seed mutation induction uses chemical and physical mutagens like EMS and radiation. Seed treatment is a convenient, reproducible method for crop improvement, allowing large-scale application and reliable results.

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Area of Science:

  • Plant genetics and breeding
  • Radiation biology
  • Chemical mutagenesis

Background:

  • Artificial induction of mutations is crucial for crop improvement.
  • Various chemical and physical agents can induce mutations.
  • Seed treatment is a widely adopted and practical method for mutation induction.

Purpose of the Study:

  • To review common methods for artificial mutation induction in seeds.
  • To highlight the convenience and reproducibility of seed treatment.
  • To focus on ethyl methanesulfonate (EMS) and radiation (gamma, fast neutron) for seed mutagenesis.

Main Methods:

  • Utilizing chemical mutagens, including alkylating agents and azides.
  • Employing physical mutagens such as electromagnetic radiation (gamma rays, X rays, UV light) and particle radiation (neutrons, beta, alpha particles).
  • Focusing on seed treatment as the primary method due to ease of handling and reproducibility, specifically with ethyl methanesulfonate (EMS) and gamma/fast neutron irradiation.

Main Results:

  • Seed treatment offers convenience, scalability, and ease of storage and shipping for mutagenic treatments.
  • Mutagenic treatment conditions are repeatable, leading to reproducible results within practical limits.
  • Ethyl methanesulfonate (EMS) and gamma/fast neutron irradiation are effective and commonly applied for seed mutation induction.

Conclusions:

  • Seed treatment is the standard and most convenient method for artificial mutation induction in seed-propagated crops.
  • The use of chemical (EMS) and physical (gamma, fast neutron) mutagens on seeds provides a reliable approach for genetic variation.
  • Mutation induction techniques discussed are essential for developing improved crop varieties.

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