Induction of Genetic Variability through Gamma Radiation on Vegetative and Floral Characters of Gladiolus (Gladiolus grandiflorus L.)

Author: E. Sathyanarayana*, Jitendra Singh and B.K. Das

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Abstract

Field investigations were carried out to know the “Induction of genetic variability through gamma radiation on vegetative and floral characters of gladiolus (Gladiolus grandiflorus L.)” was carried out at Floriculture Research Farm, Department of Floriculture and Landscape Architecture, Indira Gandhi Krishi Vishvidyalaya, Raipur, India during winter of 2018-19 and 2019-20. To conduct field experiment five cultivars of gladiolus namely American Beauty (V1), Dull Queen (V2), Saffron (V3), Candy Man (V4) and Summer Sunshine (V5) were irradiated with different doses (0, 15, 25, 35, 45 and 55 Gy) of gamma rays from 60Co source and planted under open field condition in Randomized Block Design (RBD) with factorial concept. Significantly minimum number of days required for sprouting, maximum number of sprouts per corm, number of leaves per plant and minimum days taken to spike initiation and maximum spike length, florets per spike and spikes yield was found in the lower dose of gamma irrad

Keywords

Gladiolus, Varieties, Gamma Rays, Vegetative, Spikes and Mutants.

Conclusion

The current study concluded that the lower dose of gamma irradiation treatment, i.e. 15 and 25 Gy gamma rays, significantly reduced the number of days required for sprouting, maximum number of sprouts per corm, number of leaves per plant, and minimum days taken to spike initiation and maximum spike length, florets per spike, and spike yield in both vM1 and vM2 generations. At and after 45 and 55 Gy treatments, expressions of vegetative and floral characteristics were reduced and delayed. Doses of 45 and 55 Gy were found to be the most effective for inducing colour mutation.

References

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How to cite this article

E. Sathyanarayana, Jitendra Singh and B.K. Das (2022). Induction of Genetic Variability through Gamma Radiation on Vegetative and Floral Characters of Gladiolus (Gladiolus grandiflorus L.). Biological Forum – An International Journal, 14(1): 1506-1513.