Journal of Biological Sciences1727-30481812-5719Asian Network for Scientific Information10.3923/jbs.2011.268.274Jatropha curcas L.)]]>SongsriP. SuriharnB. SanitchonJ. SrisawangwongS. KesmalaT. 32011113Narrow genetic base is a main problem hindering the progress of physic nut breeding. The objective of this study was to compare the effects of different levels of gamma radiation on germination percentage, survival percentage and growth of five physic nut genotypes. The seeds were treated with six levels of gamma radiation (0, 200, 400, 600, 800 and 1000 Gy) and the 5x6 treatment combinations were arranged in a randomized complete block design with three replications. Data were recorded for germination percentage, survival percentage at 15 Days After Germination (DAG) (GR50(15)) and survival percentage at 30 DAG (LD50(30)). As the seedlings did not survive at 600, 800 and 1000 Gy, these treatments were deleted from the successive evaluations of plant height, stem diameter and leaf number. Higher doses of gamma radiation resulted in the significant reductions in germination percentage, survival percentage and plant height. The germination percentages were from 4.0% for 1000 Gy to 82.5% for 0 Gy. The seeds treated with gamma radiation higher than 600 Gy resulted in complete mortality. Difference among genotypes was not significant for these characters. The dosages of gamma radiation to obtain LD50 based on survival percentage 30 DAG was 425 Gy and was not dependent on genotypes. The information is useful for gamma radiation induction of mutation breeding for physic nut.]]>Ambrosi, D.G., G. Galla, M. Purelli, T. Barbi and A. Fabbri et al.,2010Jatropha curcas L.]]>2810836Datta, S.K.,20092009pp: 253-256pp: 253-256Divakara, B.N., H.D. Upadhyaya, S.P. Wani and C.L. Laxmipathi Gowda,2010Jatropha curcas L.: A review.]]>87732742Dhakshanamoorthy, D., R. Selvaraj and A. Chidambaram,2010Jatropha curcas L. to induce variability in seed germination, growth and yield traits.]]>55113125Dhakshanamoorthy, D., R. Selvaraj and A.L.A. Chidambaram,2011Jatrophacurcas L. using γ rays and detection of DNA polymorphism through RAPD marker.]]>3342430Dwimahyani, I. and Ishak,2004Jatropha curcas L.) for improvement of agronomic characters variability.]]>305360Ellafa, K., O.H. Ahmed, S. Shaharudin and D.A. Rahman,2007Phaseolus vulgaris).]]>2844848Gomez, K.A. and A.A. Gomez,19842nd Edn.,Pages: 704Pages: 704Heller, J.,1996Jatropha curcas Promoting the Conservation and Use of Underutilized and Neglected Crops.]]>Irfaq, M. and K. Nawab,2001Triticum aestivum L.) cultivars.]]>1935937Jamil, M. and U.Q. Khan,20021579580Khan, M.R., A.S. Qureshi, S.A. Hussauin and M. Ibrahim,20052 generation of Chickpea (Cicer arietinum L.).]]>37285292Khan, S. and S. Goyal,20093174180Kobori, N.N., T. Mastrangelo, S.M. Cicero, P. Cassieri, M.H.D. Moraes and J.M.M. Walder,2010Ricinus communis (cv. IAC Guarani).]]>37081Kon, E., O.H. Ahmed, S. Saamin and N.M.A. Majid,2007Vigna sesquipedalis).]]>410901093Li-Rong, W.U., H. Hong, Z. Yan-Ling, L. Xing and L. Xiao-Hua,2008in vitro of Pogostemoncablin cablin (BLANCO) Benth.]]>221417Majeed, A., Z. Muhammad, H. Ahmad and A.U.R. Khan,2009Lepidium sativum.]]>3424427Machua, J., G. Muturi, S.F. Omondi and J. Gicheru,2011Jatropha curcas L. populations in Kenya using RAPD molecular markers: Implication to plantation establishment.]]>1030623069Montes, L.R., C. Azurdia, R.E.E. Jongschaap, E.N. van Loo, E. Barillas, R. Visser and L. Mejia,2009Jatropha curcas.]]>2009Nambisan, P.,2007Jatropha for biodiesel production.]]>9313471348Norfadzrin, F., O.H. Ahmed, S. Shaharudin and D.A. Rahman,2007Lycopersicon esculentum) and Okra (Abelmoschus esculentus).]]>2620625Seneviratne, K.A.C.N. and D.S.A. Wijesundara,2007Saintpaulia ionantha, H. Wendl.) with a changing colour pattern induced by mutation.]]>2233236Tanya, P., P. Taeprayoon, Y. Hadkam and P. Srinives,201129252264Wang, Z.Y., J.M. Lin, L. Luo and Z.F. Xu,2009Jatropha curcas seeds to (60)COγ radiation and their medial lethal doses in radiation breeding.]]>29506508