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tissues offers considerable use for basic research, because it is direct, omitting the callus phase; growth and differentiation processes occur at different times and culture conditions do not need to be changed to promote each phase of development. The use of asexual embryogenesis (Ammirato, 1989) in plants may be considered as a proven method for exploitingtotipotency in plants. Thus, in our current research, embryogenesis is considered not only as a parasexual method for plant modification and improvement but alsoas an ideal experimental process for investigation of plant differentiation as well asa mechanism for the expression of totipotency in plants. |
