Picea Omorika Is a Self-Fertile but Outcrossing Conifer. Kuittinen, H. & Savolainen, O. 68(2):183–187.
Picea Omorika Is a Self-Fertile but Outcrossing Conifer [link]Paper  doi  abstract   bibtex   
Outcrossing rates were estimated in a natural Yugoslavian and in a cultivated Finnish population of Serbian spruce [Picea omorika (Pani) Purk.]. The outcrossing rates in the cultivated stand in two years were 0.98 0.03 and 1.02 0.04, and in the natural stand 0.84 0.05. The relative self-fertility was estimated in seven trees in the cultivated population. The results indicate high self-fertility, which agrees with the earlier information. The high self-fertility combined with high outcrossing rate shows that Serbian spruce, in contrast to most other conifers, employs other means than early acting inbreeding depression to avoid selfing.
@article{kuittinenPiceaOmorikaSelffertile1992,
  title = {Picea Omorika Is a Self-Fertile but Outcrossing Conifer},
  author = {Kuittinen, Helmi and Savolainen, Outi},
  date = {1992-02},
  journaltitle = {Heredity},
  volume = {68},
  pages = {183--187},
  doi = {10.1038/hdy.1992.27},
  url = {https://doi.org/10.1038/hdy.1992.27},
  abstract = {Outcrossing rates were estimated in a natural Yugoslavian and in a cultivated Finnish population of Serbian spruce [Picea omorika (Pani) Purk.]. The outcrossing rates in the cultivated stand in two years were 0.98 0.03 and 1.02 0.04, and in the natural stand 0.84 0.05. The relative self-fertility was estimated in seven trees in the cultivated population. The results indicate high self-fertility, which agrees with the earlier information. The high self-fertility combined with high outcrossing rate shows that Serbian spruce, in contrast to most other conifers, employs other means than early acting inbreeding depression to avoid selfing.},
  keywords = {*imported-from-citeulike-INRMM,~INRMM-MiD:c-13772103,conifers,forest-resources,picea-omorika,self-fertile},
  number = {2}
}
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