Funding for this research was provided by:
Svenska Forskningsr?det Formas (230-2014-427)
Received: 8 June 2020
Accepted: 26 October 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: The plant material used for this study are part of common garden experiments, established and maintained by Skogforsk (The Forestry Research Institute of Sweden). Two of the co-authors of this manuscript are tree breeders at Skogforsk and agreed to access the materials.
: Not applicable.
: The authors declare that they have no competing interests.