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Study on Effectiveness and efficiency of different Doses of Gamma-rays in Sesame

Author: Madhuri Pradhan and Amitava Paul

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Abstract

Sesame is a valuable oilseed crop with several uses. The most important prerequisites for increasing seed yield are the presence of genetic variation within a particular crop population. A well-known method for increasing genetic variety is mutagenesis. Mutagenic effectiveness and efficiency of gamma rays were investigated in the two sesame (Sesamum indicum) genotypes (Rama and Tillotoma). The irradiated seeds were subjected to tests to determine their lethal dosage (LD50), which was defined as the level at which 50% of the seeds germinated. The mutagenic effectiveness and efficiency was calculated in M2 generation based on biological damage like lethality or survival %estimated in M1 generation. With an increase in mutagen dosage, mutagenic efficacy and efficiency increased. It was cleared from the result that 400Gy was most efficient in inducing mutation in both the genotypes of sesame.

Keywords

Mutagen, Effectiveness, Efficiency, Gamma rays, Sesamum indicum

Conclusion

The current study evaluated the manner in which the sesame varieties Rama and Tillotoma responded to mutagenesis effectiveness and efficiency. Among the different doses of gamma rays, 400 Gy was most effective in mutagenicity in both the genotypes. The effectiveness and efficiency of the mutagens were found to be increasing with an increase in the mutagen dose. The high dose of treatment recorded the maximum biological damage. Therefore, optimum dose is recommended. The selection of the optimum mutagenic doses for future works can be made by the determination of mutational frequency, effectiveness, and efficiency. Optimum doses of mutagen have been utilised in creation of variation and crop improvement programmes.

References

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How to cite this article

Madhuri Pradhan and Amitava Paul (2023). Study on Effectiveness and efficiency of different Doses of Gamma-rays in Sesame. Biological Forum – An International Journal, 15(8a): 177-179.