Vol. 6, Issue 4 (2018)
Morphological and biochemical responses of different varieties of Tagetes patula L. to gamma radiations
Author(s): Tripti Tewari, Ajit Kumar and Preeti Chaturvedi
Abstract: Ionizing Radiations has emerged as a useful mutagen in the mutation breeding of ornamental plants result in the induction of novel mutations. This study investigates the morphological and biochemical responses of different varieties of Tagetes patula L. (French marigold) viz., Bonanza, Guljafri Orange, Guljafri Yellow, Nana patula Yellow and Safari Red toward different dosage of gamma irradiation. In this study, the dry seeds of different varieties of T. patula L. were irradiated at 0, 2.5, 10.0, 15.0, 20.0 and 25.0 kR. The study demonstrated that low dosage (2.5 kR) of gamma irradiation had a stimulating effect on the plant height, number of flowers per plant and flower diameter in all the varieties of T. patula L. Meanwhile, dosage higher than 10.0 kR caused reductions in all the morphological parameters studied as compared to the control samples. The highest total soluble protein content [(4.11±0.47) mg/g FW] was observed in plantlets irradiated at 2.5 Kr. The present study also revealed that higher dosage of gamma irradiation (15.0 to 25.0 kR) had stimulatory effect on the specific activity of peroxidase content of T. patula L. varieties while low doses (2.5 and 10.0 kR) had a inhibitory effect on the specific activity of peroxidase. Conclusion is gamma irradiation administered at low to moderate doses of 2.5 to 25.0 Kr may induce T. patula L. var Bonanza, Safari Red, Guljafri Yellow and Nana patula Yellow mutants with superior novel characters.
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How to cite this article:
Tripti Tewari, Ajit Kumar, Preeti Chaturvedi. Morphological and biochemical responses of different varieties of Tagetes patula L. to gamma radiations. Int J Chem Stud 2018;6(4):931-938.
