Population Divergence along a Genetic Line of Least Resistance in the Tree Species Eucalyptus globulus.

ABSTRACT: The evolutionary response to selection depends on the distribution of genetic variation in traits under selection within populations, as defined by the additive genetic variance-covariance matrix (G). The structure and evolutionary stability of G will thus influence the course of phenotypic evolution. However, there are few studies assessing the stability of G and its relationship with population divergence within foundation tree species. We compared the G-matrices of Mainland and Island population groups of the forest tree Eucalyptus globulus, and determined the extent to which population divergence aligned with within-population genetic (co)variation. Four key wood property traits exhibiting signals of divergent selection were studied-wood density, extractive content, and lignin content

SUBMITTER: Costa E Silva J 

PROVIDER: S-EPMC7565133 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature