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Assessing the potential for assisted gene flow using past introduction of Norway spruce in southern Sweden: Local adaptation and genetic basis of quantitative traits in trees
August 2019 • Pascal Milesi, Mats Berlin, Jun Chen, Marion Orsucci, Lili Li, Gunnar Jansson, Bo Karlsson, Martin Lascoux
Abstract Norway spruce ( Picea abies ) is a dominant conifer species of major economic importance in northern Europe. Extensive breeding programs were established to improve phenotypic traits of economic interest. In southern Sweden, seeds used to create progeny tests were collected on about 3,000 trees of outstanding phenotype (‘plus’ trees) across the region. In a companion paper, we showed that some were of local origin but many were recent introductions from the rest of the natural range. The mixed origin of t…