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Somatic embryogenesis from mesocotyl and leaf-base segments of Paspalum scrobiculatum L., a minor millet

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Summary

Somatic embryos could be induced from embryogenic callus originating from mesocotyl as well as leaf-base segments of Paspalum scrobiculatum on Murashige and Skoog (MS) or Chu et al. (N6) medium supplemented with different concentrations of 2,4-dichlorophenoxyacetic acid (2,4-D; 4.5, 9.0, 18.0, and 22.5 μM). N6 medium was better than MS, for both explants, for high-frequency somatic embryogenesis. Also, mesocotyl tissues were relatively more totipotent than leaf-base segments. The somatic embryos ‘germinated’ and formed plantlets on transfer of embryogenic calluses to hormone-free MS or N6 regeneration medium. Embryogenic cultures could be maintained on low hormone medium which readily regenerated to form plantlets on hormone-free medium. A higher frequency of plantlet formation occurred on MS than on N6 medium. In vitro-formed plantlets were gradually acclimatized in the culture room and on transfer to soil flowered and set seed. Somatic embryogenesis and plantlet regeneration from mesocotyl and leaf-base segments are potentially simpler systems than regeneration from ‘embryonic’ explants such as immature embryos and unemerged inflorescences.

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  1. Vikrant

    Present address: Department of Plant Molecular Biology, University of Delhi South Campus, 110021, New Delhi, India

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  1. Department of Botany, University of Delhi, 110007, Delhi, India

    Vikrant & A. Rashid

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Vikrant, Rashid, A. Somatic embryogenesis from mesocotyl and leaf-base segments of Paspalum scrobiculatum L., a minor millet. In Vitro Cell.Dev.Biol.-Plant 39, 485–489 (2003). https://doi.org/10.1079/IVP2003457

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  • DOI: https://doi.org/10.1079/IVP2003457

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