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Somatic embryogenesis and plant regeneration from leaves of Ulmus minor Mill.

  • Cell Biology and Morphogenesis
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Abstract

Somatic embryogenesis from mature elm (Ulmus minor Mill.) in vitro-cloned material is possible. Embryogenic callus was obtained from leaves inoculated on two different MS-based media—one supplemented with 2.3 μM 2,4-dichlorophenoxyacetic acid (I2) and the other supplemented with 1.1 μM kinetin (I6). However, only leaves cultured on medium I6 produced somatic embryos, at the globular stage, when embryogenic callus was maintained in induction media. When embryogenic callus from medium I6 was transferred to basal medium, somatic embryos with green cotyledons were obtained. An average of 35.9% of these embryos converted easily into normal plants in conversion medium with 1% sucrose. Acclimatisation reached 39.7%, and this was not significantly different from a control group consisting of plants propagated by axillary buds. No morphological differences were observed between plants derived from somatic embryos and control plants. Also, no differences in ploidy were detected between the somatic embryo-derived plants and the mother plants.

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Fig. 5A, B

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Abbreviations

BA::

Benzyladenine

C1, C2::

Conversion media

2,4-D::

2,4-Dichlorophenoxyacetic acid

Kn::

Kinetin

NAA::

α-Naphthaleneacetic acid

PI::

Propidium iodide

I2, I6::

Induction media

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Authors and Affiliations

  1. Department of Biology, Campus Universitário de Santiago, University of Aveiro, 3810-193, Aveiro, Portugal

    P. Conde, J. Loureiro & C. Santos

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  1. P. Conde
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  2. J. Loureiro
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  3. C. Santos
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Correspondence to C. Santos.

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Communicated by D. Bartels

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Conde, P., Loureiro, J. & Santos, C. Somatic embryogenesis and plant regeneration from leaves of Ulmus minor Mill.. Plant Cell Rep 22, 632–639 (2004). https://doi.org/10.1007/s00299-003-0735-1

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  • DOI: https://doi.org/10.1007/s00299-003-0735-1

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