Theoretical and Applied Genetics

, Volume 40, Issue 6, pp 257–260 | Cite as

Mutagenicity of radiations and chemical mutagens in Sorghum

  • K. Sree Ramulu


A comparative study on the relative mutagenicity of radiations (X-and gamma rays) and chemical mutagens (EMS, MMS, dES and NEU) in inducing chlorophyll, viable and total mutations was made on three cultivated varieties (Co. 11, Co. 12 and Co. 18) of Eu-Sorghum. A critical comparison of the chlorophyll, viable and total mutations shows that the mutation rate increased with an increase in dose up to a certain dose level beyond which the saturation effect was observed. EMS was found to be the most potent mutagen in inducing chlorophyll, viable and total mutations. The treatments with NEU (viable mutations) and dES (viable and total mutations) also proved to be effective. In a large number of cases the relationship between chlorophyll and total mutations was more close than that of viable to total mutation rates.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. 1.
    Ehrenberg, L., Nybom, N.: Ion density and biological effectiveness of radiation. Acta Agric. Scand. 4, 396 to 418 (1954).Google Scholar
  2. 2.
    Fujii, T.: Radiosensitivity in plants. V. Experiments with several cultivated and wild rices. Jap. J. Breed. 12, 131–136 (1962).Google Scholar
  3. 3.
    Gaul, H.: Mutations in plant breeding. Rad. Bot. 4, 155–232 (1964).Google Scholar
  4. 4.
    Hildering, G. J.: The mutagenic effect of ethylene imine on the tomato. Euphytica 12, 113–119 (1963).Google Scholar
  5. 5.
    Kawai, T.: The present status of mutation research and breeding in rice in Japan. IRC Newsletter 11, 10–22 (1962).Google Scholar
  6. 6.
    Konzak, C.F., Nilan, R. A., Wagner, J., Foster, R. J.: Efficient chemical mutagenesis. Symp. on use of induced mutations in Plant Breeding (FAO/IAEA, Rome) 49–70 (1965).Google Scholar
  7. 7.
    Matsuo T., Yamaguchi, H.: Review of research on use of radiation induced mutations in crop breeding in Japan. Euhytica 11, 245–255 (1962).Google Scholar
  8. 8.
    Rao, R. N., Natarajan, A. T.: Mutagenicity of some alkyl alkanc sulfonates in barley. Mutation Res. 2, 133–148 (1965).Google Scholar
  9. 9.
    Sree Ramulu, K.: Studies on induced mutations in the genus Sorghum (Moench.). Thesis submitted for Ph. D. degree of Univ. of Madras (1968).Google Scholar
  10. 10.
    Swaminathan, M. S.: Effect of diplontic selection on the frequency and spectrum of mutations induced in polyploids following seed irradiations. Symp. Effects of ionizing radiation on seeds and significance for crop improvement. (IAEA, Vienna), 279 -288 (1961).Google Scholar
  11. 11.
    Wellensiek, S. J.: Comparison of the effects of EMS, neutrons, gamma and X-rays on peas. Symp. Use of induced mutations in Plant Breeding (FAO/IAEA, Rome) 227–235 (1965).Google Scholar
  12. 12.
    Yamaguchi, H.: Genetic effects of pile radiations in rice. Symp. Biological effects of neutron and proton irradiations I. (IAEA, Vienna) 371 to 382 (1964).Google Scholar

Copyright information

© Springer-Verlag 1970

Authors and Affiliations

  • K. Sree Ramulu
    • 1
  1. 1.Division of Cytogenetics & Plant BreedingAgricultural College and Research InstituteCoimbatoreIndia

Personalised recommendations