Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2000.660.662M.Yaseen S. Ahmad T. Hussain 4200034Wheat genotypes grown at control and adequate P levels differed markedly in their growth response. Growth response in terms of straw and grain yields was influenced by P application, genotype and their interaction. Relative reduction in grain yield ranged from none to 4%. Among all the genotypes Pervaz-94 showed response to P application. It was also observed that genotypes with high P concentration had low P uptake, low phosphorus use efficiency and hence low grain yield. Inqlab-91 and Chakwal-86 used phosphorus efficiently at both the P levels. Phosphorus efficient genotypes could be grown under low or little P fertilizer conditions.]]>Ahmad, N., M.T. Saleem and I.T. Twyford,19921992pp: 5992Anonymous,19981998Chapman, H.D. and P.F. Pratt,1961Pages: 309Pages: 309Clark, R.B. and R.R. Duncan,199127219240Dhillon, N.S. and G. Deve,199341378380El Bassam, N.,199810095100Fageria, N.K. and M.P. Barabosa-Filho,19826146151Gourley, C.J.P., D.L. Allan, M.P. Russelle and P.R. Bloom,199357103110Anonymous,19981998Siddique, M.,19981998Steel, R.G.D. and J.H. Torrie,19802nd Edn.,Pages: 633Pages: 633Yaseen, M., M.A. Gill, M. Siddique, Z. Ahmad, T. Mahmood and H. Rahman,19981998pp: 211215Zia, M.S., M.A. Gill, M. Aslam and M.F. Hussain,1991113538