Attia, A.O., Roba M. Ismail, Eman M. Fahmy and A.S. Sadik 2009. ESTABLISHMENT OF REGENERATION AND TRANSFORMATION SYSTEMS OF THE CULTIVAR ’M9681’ OF SUGAR BEET (BETA VULGARIS L.). Pakistan Journal of Biotechnology. 6, (1-2) (Dec. 2009), 37–44.