Influence of Growth Regulators on Callogenesis and Somatic Embryo Development in Date Palm (Phoenix dactylifera L.) Sahelian Cultivars

Figure 1

Callogenesis and development of date palm somatic embryos. (a) compact nodular primary callus obtained from foliar explants after 2 months on 2,4-D (2 mg l⁻¹) containing medium; (b) friable secondary callus obtained 1 month after chopping of the primary callus; (c) suspension culture; (d) somatic embryos of stage I, (e) stage, II and III (f), respectively, after 2, 4, and 6 weeks of culture on PGR-free medium; (g) germinated somatic embryo. NC: Nodular callus, FC: Friable callus, MC: microcallus, SE: somatic embryo.

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