Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2006.2618.2623AliSardar Hidayat-ur-Rahman Raziuddin ShahS. SalimHassanG. 122006914Broad sense heritability estimates, genetic advance and Relative Expected Genetic Advance (REGA) were computed for different fodder yield related traits in two maize populations during Kharif 2002 and 2003. Two maize populations, DRS; developed through recurrent selection and DMS developed through mass selection, were grown in modified RCBD with two replications. Mean squares from the analysis of variance among S1 families for both maize populations indicated highly significant (p≤0.01) differences for all the studied traits. Estimates of genetic variances were significant for all traits except stem girth in both populations. Genetic variances in comparison to respective environmental variances were greater for majority of the traits in both populations. Heritability estimates were high and significant for all the traits in both populations. Comparison of two populations revealed that heritability estimates were higher for internode length and fresh fodder yield in the DRS population and for plant height, stem girth, flag leaf area and dry matter content in the DMS population. Genetic advance was higher for internode length, flag leaf area, fresh fodder yield in the DRS population and for plant height, stem girth and dry matter content in DMS population. REGA% was higher for internode length and fresh fodder yield in DRS population while DMS population attained higher values for plant height, stem girth, flag leaf area and dry matter content. The higher heritability estimates, genetic advance and REGA for fresh fodder yield in DRS population indicates that recurrent selection method was comparatively more effective in improving maize population for fodder yield parameters.]]>Ahmad, N. and S.S. Mehdi,20011 families for various grain yield and quality traits in a popcorn population.]]>532325Asghar, M.J. and S.S. Mehdi,1999213661370Asghar, M.J. and I.A. Khan,2005Zea mays L.) populations I means variance components and heritabilities.]]>8839843Aziz, A., M. Saleem, H. Rahman and F. Mohammad,19928509512Backtash, F.Y.,198615265272Casanas, F., L. Bosch, A. Almirall, E. Sanches and F. Nuez,199843243249El-Hosary, A.A. and A.A. Abd-El-Sattar,199735171180Fehr, W.R.,1987Vol. 1,Kearsey, M.J. and H.S. Pooni,1966Kumar, S. and S.N. Mishra,19951 lines derived after modified ear to row selection in maize.]]>164448Lothrop, J.E., R.E. Atkins and O.S. Smith,198525235244Mahdy, E.E., B.R. Bakhet, H.H.E. Hinnawy and A.M. Easa,19871 and half sib reciprocal recurrent selection in two maize populations.]]>18119130Malvar, R.A., A. Ordas, P. Revilla and M.E. Cartea,199636291295Mehdi, S.S. and M. Ahsan,2000Zea mays L.) for green fodder purposes at seedling stage.]]>318901891Mehdi, S.S. and M. Ahsan,20001 recurrent selection cycle.]]>3181182Montgomery, E.G.,196253187187Nazir, H., K. Hayat, F.U. Khan, A. Aziz and Q.U. Zaman,200319539542Saleh, G.B., S.A.S. Alawi and K. Panjaitan,20025251254Stansfield, W.D.,1986Vasal, S.K., B.S. Dhillon, G. Srinivasan, S.D. Mclean, J. Crossa and S.H. Zhang,19953 recurrent selection in four tropical maize populations on their selfed and random mated generations.]]>35679702Walters, S.P., W.A. Russell and K.R. Lomkey,19911 lines and their test crosses from four Iowa stiff stalk populations of maize.]]>363944Zieger, G.,1987Zea mays L.) with consequences for breeding I estimate of variance components from diallel series.]]>17321330