Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.1999.127.130Zea mays L.]]>HassanL. AhmadS.D. 1199921Colchicine at various concentration was given to the apical buds of maize (Zea mays L.) Plants, in order to induce tetraploidy for meiotic studies. Highly irregular meiosis in the C1 generation was revealed. These meiotic abnormalities increased pollen sterility which lead to a lower seed setting. In the C2 generation the occurrence of bivalents has increased and that of multivalents has decreased. Restoration of meiotic regularities, pollen fertility.]]>Arora, O.P.,1940Verbena species to colchitetraploidy.]]>18166171Beasley, J.O.,1940Gossypium.]]>313948Bhatt, B.,1977Solanum khasianum Clarke.]]>17121124Bennett, M.D. and J.B. Smith,1979383347Darlington, C.D.,1965Dhesi, J.S. and R.G. Saini,1973164952Driscoll, C.J., N.L. Darvey and H.N. Barber,1967216687688Forbes, Jr. I. and G.W. Burton,1963Cynodon species and hybrids.]]>37579Gupta, S.K. and S.K. Roy,197922021Gupta, S.K. and S.K. Roy,1986Nicandra physaloides.]]>51319324Hassan, L. and R.N. Jones,1994Lolium multiflorum L. (Italian ryegrass).]]>736571Hassan, L. and R.N. Jones,1995Lolium perenne).]]>38356361Harlan, J.L. and J.M.J. de Wet,1969Cynodon dactylon (L.) Pers.]]>9774778Hazarika, M.H. and H. Rees,196722317332Jalil, R., S.N. Zadoo and T.N. Khoshoo,197417118124Kostoff, D.,1940313334Lavania, U.C.,1986Hyoscyamus muticus L. through induced tetraploidy.]]>73292298Loidl, J.,1988Allium ursinum.]]>1789397Loidl, J.,198978195203Mahal, C., M. Pal and T.N. Khoshoo,1968Cynodon dactylon complex.]]>87625627Mehlquist, G.A.L., C.O. Blodgett and B. Lawrence,1943Delt cardinals.]]>34187192Puertar, M.J., A. de la Pena, B. Estades and F. Merino,198489121126Singh, A.K.,1979Portulaca grandiflora L.]]>44167174Singh, R.N. and S.K. Ray,1980Autotetraploid petani.]]>323Singh, R.N. and S.K. Roy,1981Phlox.]]>38260262Singh, R.N. and S.K. Roy,1983Delphinium.]]>15964Singh, R.N. and S.K. Roy,1984Autotetraploid capsicum.]]>49797805Singh, R.N. and S.K. Roy,1988Petunia hybrida Hort. Morphocytogenetical studies.]]>53577584