Genome-wide shifts in climate-related variation underpin responses to selective breeding in a widespread conifer.

ABSTRACT: Locally adapted temperate tree populations exhibit genetic trade-offs among climate-related traits that can be exacerbated by selective breeding and are challenging to manage under climate change. To inform climatically adaptive forest management, we investigated the genetic architecture and impacts of selective breeding on four climate-related traits in 105 natural and 20 selectively bred lodgepole pine populations from western Canada. Growth, cold injury, growth initiation, and growth cessation phenotypes were tested for associations with 18,600 single-nucleotide polymorphisms (SNPs) in natural populations to identify "positive effect alleles" (PEAs). The effects of artificial selection for faster growth on the frequency of PEAs associated with each trait were quantified in breeding popu

SUBMITTER: MacLachlan IR 

PROVIDER: S-EPMC7958292 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature