59-05-032 Proceeding

67 Proceedings of the Princess Maha Chakri Sirindhorn Congress IV. Conclusions The isolatedmutantsmainly showed an altered leaf structure, plant habit, panicle shape, seed size, seed color, seed structure and days to maturity. A highest spectrum and frequency of viable mutations was observed for 400 Gy. Dose 700 Gy showed the least spectrum and lowest frequency of viable mutations. Nine selected mutants showed positive and negative yield contributing traits as compared to the parent cultivar. Double yield per plant compared to control was produced fromhigh yieldingmutant with highly significant increase of all yield contributing traits. Compact panicle mutant had the second highest yield per plant. Bold seed mutant and broad leaf mutant also showed significant increase in yield per plant over the control. These research showed that the induced mutation have generated a variability for yield contributing traits. Acknowledgement The author would like to thank to the honourable Minister, Ministry of Science and Technology for allowing her to do this research. Deeply thanks are to theDepartment of Agricultural Research and the Department of Atomic Energy for supporting seeds of sorghum and Gamma radiation. Special thanks are given to her teachers from Department of Biotechnology for their advice, suggestion and guidance. References Dogget. A. 1988. Sorghum J. wiley. New York. RANA, B.S. RAO, M.H., Technology for increasing sorghum production and value addition. National Research Center for Sorghum, Indian Council of Agricultural Research. Hyderabad, India, 65 (2000). Prakash, S.P.J., K.R. Biji, S.M. Gomez, K.G. Murthy, R.C. Babu. 2006. Genetic diversity analysis of sorghum ( Sorghum bicolor L. Moench) accessions using RAPD markers. India Jour. Crop Sic., 1, 109-112. Y. Anand and S.T. Kajjidoni, Genetic enhancement of grain size and other productivity related traits through induced variability in Kharif sorghum, Karnataka J. Agric. Sic., 27 (2): (121-124) 2014. Depkes, D.G.: Gizi sorghumungguli beras, DalamMedia Indonesia, 24 Februari, halamanX. (1991). H. Soeranto, Tomoko M. Nakanishi and M.T. Razzak, Mutation Breeding in sorghum in Indonesia, Radioisotopes J. 50, 169-175 (2001). Ahluwalia, B.S., Malusznski M., Nichterlein K. Global impact of mutation-derived varieties. Euphytica 135, 187-204 (2004). Reddy, P.S. et al ., Creating of genetic variability by recourse to irradiation in groundnut ( Arachis hypogaea L.). Oleagineux, 32, 59-63 (1977).