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The use of somatic embryogenesis for plant propagation in cassava

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Abstract

In cassava, somatic embryogenesis starts with the culture of leaf explants on solid Murashige and Skoog-based medium supplemented with auxins. Mature somatic embryos are formed within 6 wk. The cotyledons of the primary somatic embryos are used as explants for a new cycle of somatic embryogenesis. The cotyledons undergo secondary somatic embryogenesis on both liquid and solid Murashige and Skoog-based medium supplemented with auxins. Depending on the auxin, new somatic embryos are formed after 14–30 d after which they can be used for a new cycle of somatic embryogenesis. In liquid medium, more than 20 secondary somatic embryos are formed per initial cultured embryo. In both primary and secondary somatic embryogenesis, the somatic embryos originate directly from the explants. Transfer of clumps of somatic embryos to a Greshoff and Doy-based medium supplemented with auxins results in indirect somatic embryogenesis. The direct form of somatic embryogenesis has a high potential for use in plant propagation, whereas the indirect has a high potential for use in genetic modification of cassava.

Mature somatic embryos germinate into plants after desiccation and culture on a Murashige and Skoog-based medium supplemented with benzylaminopurine (BA). Depending on the used BA concentration, plants can either be transferred either directly to the greenhouse or after using standard multiplication protocols.

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Authors and Affiliations

  1. Graduate School of Experimental Plant Sciences, Laboratory of Plant Breeding, Wageningen University, P.O. Box 386, 6700 AJ, Wageningen, The Netherlands

    Krit Raemakers

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  1. Krit Raemakers
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  2. Evert Jacobsen
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  3. Richard Visser
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Correspondence to Krit Raemakers.

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Raemakers, K., Jacobsen, E. & Visser, R. The use of somatic embryogenesis for plant propagation in cassava. Mol Biotechnol 14, 215–221 (2000). https://doi.org/10.1385/MB:14:3:215

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