Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.1187.1189Allium]]>HassanL. AhmadS.D. 7200037The effect of chemical mutagens on the induction of mitotic chromosomal aberrations in diploid Allium cepa and tetraploid Allium vineale has been studied. In inducing chromosomal aberrations in case of both diploid and tetraploid Allium all the mutagens were found to be effective . Mitotic irregularities were higher in tetraploid species as compared with the diploid species. All types of chemical mutagens were found to be effective for the induction of chromosomal aberrations but chromosomal aberrations are increased due to the effect of Ethyl Methyl Sulphonate (EMS) in comparison to the other chemical mutagens. In explaining the concentration of EMS application of 0.20 % of the chemical may be the highest dose whereas 0.05 % may be considered as a lower dose.]]>Andersson, H.C. and B.A. Kihlman,1987Viciafaba.]]>1071525Bhaskaran, S. and M.S. Swaminathan,19621166181Conger, A.D. and A.H. Johnston,1956178271271Darlington, C.D. and J. McLeish,1951167407408Evans, H.J. and D. Scott,1964Vicia faba.]]>491738Gichner, T., J. Veleminsky and V. Pokorny,197112391396Khan, S. and B.A. Siddiqui,1993Vigna radiata (L.) wilczek. II Mutagenic effectiveness and efficiency of chemical mutagens.]]>25161166Kihlman, B.A.,1975Vicia faba for the study of the induction of chromosomal aberrations.]]>31401412Kihlman, B.A. and S. Sturelid,1975Vida faba.]]>80247254Konzak, C.F. and W.R. Singleton,195237596597Ma, T.H.,197964307313Mikaelsen, K.,19589154154Natarajan, A.T.,1993101225229Pearson, O.W., C. Sander and R.A. Nilan,197515315322Shaikh, M.A.Q., Z.U. Ahmed, M.A. Majid and M.A. Wadud,1982Cicer arietinum L.) derived through mutation breeding.]]>22483489Shamsuzzaman, K.M. and M.A.Q. Shaikh,19913745Smith, L.,194673137158Swaminathan, M.S., V.L. Chopra and S. Bhaskaran,196222192207Yamagata, H., Y. Kowyama and K. Syakudo,1969Solanum species.]]>9509521