Funding for this research was provided by:
Biotechnology and Biological Sciences Research Council (BB/L012162/1)
H2020 Marie Skłodowska-Curie Actions (INTERCROSSING)
Engineering and Physical Sciences Research Council (EP/K000128/1)
Text and Data Mining valid from 2018-06-28
Received: 31 October 2017
Accepted: 18 June 2018
First Online: 28 June 2018
Ethics approval and consent to participate
: Permission for study of the trees was granted by University of Copenhagen and the Hørsholm Arboretum. Original sources of tree genotypes are shown in Table InternalRef removed .
: Not applicable.
: The authors declare that they have no competing interests.
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