Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.1999.682.688ChaudhryAman Ullah ShawDavid S. 3199923Genotypes were quantitatively different in shoot and rot-forming capacity from cotyledon and hypocotyl explants. Tomato genotypes LA 1623, LA1456, LA1546 and FMX-93 had a higher frequency of shoot regeneration and root formation the Nova and Rockingham. Shoot formation by cotyledon explants was found to be superior to shoot formation by hypocotyl explants in all genotypes except LA 1546 in which the hypocotyl was superior in producing shoots. Somaclonal variation with altered leaf shape, plant height and seedling viability were noted in the R1 generation, with increased and decrease resistance to late-blight in mutants.]]>Aung, L.H., H.H. Bryan and J.M. Byrne,197510011922Duncan, R.R.,19971997pp: 201-240pp: 201-240Evans, D.A. and W.R. Sharp,1983221949951Frankenberger, E.A., P.M. Hasegawa and E.C. Tigchelaar,1981102221232Gavazzi, G., C. Tonelli, G. Todesco, E. Arreghini and F. Raffaldi et al.,1987Lycopersicon esculentum L.).]]>74733738Kartha, K.K., O.L. Gamborg, J.P. Shyluk and F. Constabel,1976in vitro leaf culture of tomato (Lycopersicon esculentum Mill. cv. Starfire) and high frequency plant regeneration.]]>77292301Kurtz, S.M. and R.D. Lineberger,198310710714Larkin, P.J. and W.R. Scowcroft,198160197214Larkin, P.J. and W.P. Scowcroft,19832111121Locy, R.D.,1981Lycopersicon spp.]]>6110721079Meredith, C.P.,1979Lycopersicon esculentumMill.).]]>95405411Murashige, T. and F. Skoog,196215473497Norstog, K.,197023665670Ohki, S., C. Bigot and J. Mousseau,1978in vitro in two lines of tomato (Lycopersicon esculentum Mill.) and their hybrids.]]>192742Padmanabhan, V., E.F. Paddock and W.R. Sharp,1974Lycopersicon esculentum leaf callus.]]>5214291432Shepard, J.F., D. Sidney and E. Shahin,19802081724Steel, R.G.D. and J.H. Torrie,1980pp: 232-251pp: 232-251Sun, Z., C. Zhao, K. Zheng and Y. Oixiu,1983676773Tal, M., K. Dehan and H. Heikin,197741937941Totchell, S. and A. Binns,1986363536Welander, M. and G. Maheswaran,1992140223228Williams, E.G. and G. Maheswaran,198657443462Zelcer, A., O. Soferman and S. Izhar,1984in vitro screening for tomato genotypes exhibiting efficient shoot regeneration.]]>115211215