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Care Oliver
Gailing Oliver
Mueller Markus
Krutovsky Konstantin
Leinemann Ludger
2021-02-15T12:33:46Z
2021-02-15T12:33:46Z
2020
14242818
https://elib.sfu-kras.ru/handle/2311/137956
Статья из журнала.
Norway spruce differs little in neutral genetic markers among populations and provenances often reported, but in terms of putative adaptive traits and their candidate genes, some clear differences have been observed. This has previously been shown for crown morphotypes. Stands with mostly narrow crown shapes are adapted to high elevation conditions, but these stands are scattered, and the forest area is often occupied by planted stands with predominantly broad crowned morphotypes. This raises questions on whether this differentiation can remain despite gene flow, and on the level of gene flow between natural and planted stands growing in close neighbourhood. The locally adapted stands are a valuable seed source, the progeny of which is expected to have high genetic quality and germination ability. The presented case study is useful for spruce plantation by demonstrating evaluation of these expectations. Immigrant pollen and seeds from planted trees could be maladaptive and may alter the genetic composition of the progeny. This motivated us to study single tree progenies in a locally adapted stand with narrow crowned trees in a partial mast year at nuclear genomic simple sequence repeat (SSR) markers. Spruce is a typical open-pollinated conifer tree species with very low selfing rates, which were also observed in our study (s = 0.3-2.1%) and could be explained by efficient cross-pollination and postzygotic early embryo abortion, common in conifers. The estimated high amount of immigrant pollen found in the pooled seed lot (70.2-91.5%) is likely to influence the genetic composition of the seedlings. Notably, for individual mother trees located in the centre of the stand, up to 50% of the pollen was characterised as local. Seeds from these trees are therefore considered to retain most of the adaptive variance of the stand. Germination percentage varied greatly between half-sib families (3.6-61.9%) and was negatively correlated with relatedness and positively with effective pollen population size of the respective families. As pollen mostly originated from outside the stand and no family structures in the stand itself were found, germination differences can likely be explained by diversity differences in the individual pollen cloud. © 2020 by the authors.
Vol. 12, Is. 7
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85088302755&doi=10.3390%2fD12070266&partnerID=40&md5=e695716c0aef3d4ad3d5dd249ff0082c
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gene flow
inbreeding effect
mating system
outbreeding
parentage assignment
paternity analysis
pollen dispersal
Mating system in a native Norway spruce (Picea abies [L.] KARST.) stand-relatedness and effective pollen population size show an association with the germination percentage of single tree progenies
Journal Article
Care Oliver: Georg August Univ Gottingen, Dept Forest Genet & Forest Tree Breeding, D-37077 Gottingen, Germany; Georg August Univ Gottingen, Ctr Integrated Breeding Res CiBreed, D-37075 Gottingen, Germany; ISOGEN GmbH & Co KG, D-37077 Gottingen, Germany
Gailing Oliver: Georg August Univ Gottingen, Dept Forest Genet & Forest Tree Breeding, D-37077 Gottingen, Germany; Georg August Univ Gottingen, Ctr Integrated Breeding Res CiBreed, D-37075 Gottingen, Germany
Mueller Markus: Georg August Univ Gottingen, Dept Forest Genet & Forest Tree Breeding, D-37077 Gottingen, Germany
Krutovsky Konstantin: Georg August Univ Gottingen, Dept Forest Genet & Forest Tree Breeding, D-37077 Gottingen, Germany; Georg August Univ Gottingen, Ctr Integrated Breeding Res CiBreed, D-37075 Gottingen, Germany; Texas A&M Univ, Dept Ecosyst Sci & Management, College Stn, TX 77840 USA; Russian Acad Sci, Vavilov Inst Gen Genet, Lab Populat Genet, Moscow 119991, Russia
Leinemann Ludger: Georg August Univ Gottingen, Dept Forest Genet & Forest Tree Breeding, D-37077 Gottingen, Germany; ISOGEN GmbH & Co KG, D-37077 Gottingen, Germany
266
10.3390/D12070266
Diversity
да
да
128392186-315892530


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