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Abortive embryogenesis in hybrid swarm populations of Pinus sylvestris L. and Pinus muga Turra

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Abstract

Comparative study on fertilization process in Pinus sylvestris, Pinus mugo and in their putative hybrid swarm individuals was done involving pre-zygotic and post-zygotic stages. The amount of surviving ovules from open pollination reflecting the mode of interaction between pollen grains and nucellar tissue of an ovule averaged at 8.1 of sound ovules per conelet in Pinus sylvestris, 7.3 ovules in the hybrid swarm population and at 4.9 ovules in Pinus mugo. A strong correlation was observed between the number of surviving ovules and the proportion of germinating seeds in the compared species and hybrids. Normal course of embryogenesis in Pinus sylvestris and Pinus mugo contrasted with increased frequency of disturbances observed in the hybrid swarm individuals. The differential survival rates of the ovules and deviations from typical pattern of embryogenesis are discussed from the standpoint of cross-ability relationship between Pinus sylvestris and Pinus mugo.

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Acknowledgment

This work was supported by Science and Technology Assistance Agency under contract No. APVT-51-004-004.

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Authors and Affiliations

  1. Institute of Plant Genetics and Biotechnology, Slovak Academy of Sciences, Akademicka 2, P.O. Box 39A, 950 07, Nitra 1, Slovak Republic

    Andrej Kormutak, Božena Vookova, Peter Manka & Jan Salaj

  2. Department of Botany and Genetics, Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, Nabrežie mladeže 91, 949 74, Nitra, Slovak Republic

    Vladimir Camek

  3. Department of Phytology, Faculty of Forestry, Technical University in Zvolen, T. G. Masaryka 24, 960 53, Zvolen, Slovak Republic

    Dušan Gömöry

Authors
  1. Andrej Kormutak
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  2. Božena Vookova
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  3. Peter Manka
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  4. Jan Salaj
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  5. Vladimir Camek
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  6. Dušan Gömöry
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Corresponding author

Correspondence to Andrej Kormutak.

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Communicated by P. von Aderkas.

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Kormutak, A., Vookova, B., Manka, P. et al. Abortive embryogenesis in hybrid swarm populations of Pinus sylvestris L. and Pinus muga Turra. Trees 22, 657–662 (2008). https://doi.org/10.1007/s00468-008-0223-x

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  • DOI: https://doi.org/10.1007/s00468-008-0223-x

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