**9. Conclusion and future works**

This reviews discussed the application of tissue culture techniques as an alternative mean of asexual propagation of important plants. The advantages of tissue culture techniques allow the propagation of recalcitrant plants including oil palms, endangered plants species as well as seasonal dependent plants [8]. This technique required small amounts of plant tissues to propagate large scales of plant clones, thus, making it a convenient method for plant breeding. Plantlets regeneration from cultured plant cells and tissues has been achieved in many species of high economic value. Many of studies are aimed to carry out large scale propagation of important trees yielding fuel, timber, pulp, oils and fruits [9–12]. Therefore, tissue culture techniques became an alternative for tree improvement.
