Vol. 7, Issue 2 (2019)
Effect of gamma irradiation on flowering attribute of Chrysanthemum
Author(s): UH Patil, Dr. AR Karale and AH Gaidhani
Abstract: The present experiment was conducted on chrysanthemum cultivar ‘Local Golden’ which was irradiated with 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 Krad of gamma radiation at Department of Chemistry, University of Pune. Objectives were to study morphological change in chrysanthemum due to radiation and to explore the possibility of physical mutagen to create genetic variability in chrysanthemum. The experiment was laid out in Randomized Block Design with seven treatments replicated three times. The quantitative and qualitative characters were studied. Reduction in survival percentage, plant height, number of branches, and number of suckers per plant was observed after irradiation and with increase in dose of gamma rays.The treatment with 2.5 and 3.0 Krad of gamma rays delayed the flower bud initiation as well as flowering. Among different gamma ray treatments, minimum number of days taken from bud to full bloom was recorded with control (45.60 days) and maximum (54.72 days) was recorded with 2.5 Krad. Yield of flowers and number of flowers per plant was maximum in control i.e. 0.551 kg and 186.00 respectively as compared to other treatments, while minimum was recorded in 3.0 Krad (0.377 kg and 127.57 respectively). Among different gamma ray treatments, the best performance was shown by treatment 3.0 Krad in flower diameter (6.31 cm) and number of ray florets per flower (201.7), followed by 2.5 Krad treatment. Maximum crop duration of 174.09 days was recorded at 3.0 Krad of gamma ray. There was no significant difference in colour of florets of treated and control plants. There were no leaf and floral abnormalities in treated plants. Chimera in ray florets of flower was observed in one plant after 1.5 Krad treatments. The original shape of ray florets was flat with small tube at the base whereas in case of tubular mutant, shape at tip was spoon type and basal portion showed pipe or tube like appearance.
Pages: 1409-1411 | 461 Views 100 Downloads
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How to cite this article:
UH Patil, Dr. AR Karale, AH Gaidhani. Effect of gamma irradiation on flowering attribute of Chrysanthemum. Int J Chem Stud 2019;7(2):1409-1411.
