Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme

Douglas fir is expected to play an increasingly important role in Swedish forestry under a changing climate. Thus far, seed orchards with clones of phenotypically selected trees (plus trees) have been established to supply the market with highly qualitative reproductive material. Given the high gene...

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Main Authors: Charalambos Neophytou, Hubert Hasenauer, Johan Kroon
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Forests
Subjects:
Online Access:https://www.mdpi.com/1999-4907/13/6/895
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author Charalambos Neophytou
Hubert Hasenauer
Johan Kroon
author_facet Charalambos Neophytou
Hubert Hasenauer
Johan Kroon
author_sort Charalambos Neophytou
collection DOAJ
description Douglas fir is expected to play an increasingly important role in Swedish forestry under a changing climate. Thus far, seed orchards with clones of phenotypically selected trees (plus trees) have been established to supply the market with highly qualitative reproductive material. Given the high genetic variation of the species, its growth properties are significantly affected by the provenance. Here, we applied microsatellite markers to identify the origin of clones selected within the Swedish breeding programme. Moreover, we analysed the timing of bud burst in open-pollinated families of these clones. In particular, we aimed to explain the provenance effect on phenology by using molecular identification as a proxy. A Bayesian clustering analysis with microsatellite data enabled the assignment of the clones to one of the two varieties and also resolved within-variety origins. The phenological observations indicated an earlier bud burst of the interior variety. Within the coastal variety, the northern provenances exhibited a later bud burst. We found a significant effect of the identified origin on bud burst timing. The results of this study will be used to support further breeding efforts.
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spelling doaj.art-8ba9e30a08974613b883005ca52907a62023-11-23T16:40:55ZengMDPI AGForests1999-49072022-06-0113689510.3390/f13060895Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding ProgrammeCharalambos Neophytou0Hubert Hasenauer1Johan Kroon2Institute of Silviculture, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences (BOKU), A-1190 Vienna, AustriaInstitute of Silviculture, Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences (BOKU), A-1190 Vienna, AustriaSkogforsk, Ekebo 2250, SE-268 90 Svalöv, SwedenDouglas fir is expected to play an increasingly important role in Swedish forestry under a changing climate. Thus far, seed orchards with clones of phenotypically selected trees (plus trees) have been established to supply the market with highly qualitative reproductive material. Given the high genetic variation of the species, its growth properties are significantly affected by the provenance. Here, we applied microsatellite markers to identify the origin of clones selected within the Swedish breeding programme. Moreover, we analysed the timing of bud burst in open-pollinated families of these clones. In particular, we aimed to explain the provenance effect on phenology by using molecular identification as a proxy. A Bayesian clustering analysis with microsatellite data enabled the assignment of the clones to one of the two varieties and also resolved within-variety origins. The phenological observations indicated an earlier bud burst of the interior variety. Within the coastal variety, the northern provenances exhibited a later bud burst. We found a significant effect of the identified origin on bud burst timing. The results of this study will be used to support further breeding efforts.https://www.mdpi.com/1999-4907/13/6/895<i>Pseudotsuga menziesii</i>non-native forest treeforest tree breedingmicrosatellitesphenologyorigin identification
spellingShingle Charalambos Neophytou
Hubert Hasenauer
Johan Kroon
Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme
Forests
<i>Pseudotsuga menziesii</i>
non-native forest tree
forest tree breeding
microsatellites
phenology
origin identification
title Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme
title_full Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme
title_fullStr Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme
title_full_unstemmed Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme
title_short Molecular Genetic Identification Explains Differences in Bud Burst Timing among Progenies of Selected Trees of the Swedish Douglas Fir Breeding Programme
title_sort molecular genetic identification explains differences in bud burst timing among progenies of selected trees of the swedish douglas fir breeding programme
topic <i>Pseudotsuga menziesii</i>
non-native forest tree
forest tree breeding
microsatellites
phenology
origin identification
url https://www.mdpi.com/1999-4907/13/6/895
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