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Towards a European Douglas-fir breeding population for long term breeding

Abstract : The demand of renewable and sustainable resources is expected to increase. At the same time the climate change scenarios creates uncertainty regarding futur e growth conditions in the Swedish forests. Thus it is essential to make the genetic adaptation to a new climate easier. Skogforsk has now proposed a strategy for a fast and effective adaptation of the broad-leaved gene resources. Totally 13 species are of main interest and maybe another 4 exotic species will be included. The basic plan is to harvest open-pollinated seed from totally 500 trees for each species within the Swedish distribution area. Such a population will with high probability (95 %) and in long term (50 generations) preserve alleles existing in a frequency down to 0.02. The 500 selected trees will be distributed on 1-2 degree latitude belts, creating 5-10 subpopulations each including 50-100 of the selected trees. For each subpopulation three gene resource stands, each including 50 plants per selected tree, will be established within and north of the selection region. These stands are managed to favour seed production to rapidly create new generations of gene resource stands to be established more or less further to the north of the existing ones. The general idea is to use open pollinated seed and establish plants without knowledge of family identities. A future option is to use DNA technique for pedigree construction if for instance breeding activities is of concern.
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Submitted on : Tuesday, June 2, 2020 - 9:02:27 PM
Last modification on : Wednesday, May 5, 2021 - 11:32:03 AM
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  • HAL Id : hal-02738583, version 1
  • PRODINRA : 355943

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Daniel Michaud, Jean-Charles Bastien, Leopoldo Sanchez Rodriguez. Towards a European Douglas-fir breeding population for long term breeding. Forest Tree Breeding Conference. IUFRO 2014, IUFRO., Aug 2014, Prague, Czech Republic. ⟨hal-02738583⟩

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