Divergent selection predating the Last Glacial Maximum mainly acted on macro-phenotypes in Norway spruce.

ABSTRACT: The current distribution and population structure of many species were, to a large extent, shaped by cycles of isolation in glacial refugia and subsequent population expansions. Isolation in and postglacial expansion through heterogeneous environments led to either neutral or adaptive divergence. Norway spruce is no exception, and its current distribution is the consequence of a constant interplay between evolutionary and demographic processes. We investigated population differentiation and adaptation of Norway spruce for juvenile growth, diameter of the stem, wood density, and tracheid traits at breast height. Data from 4461 phenotyped and genotyped Norway spruce from 396 half-sib families in two progeny tests were used to test for divergent selection in the framework of Q _ST<

SUBMITTER: Tiret M 

PROVIDER: S-EPMC9850012 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature