P opulus trichocarpa is widespread across western North America spanning extensive
variation in photoperiod, growing season and climate. We investigated trait variation in P …

In order to uncover the genetic basis of phenotypic trait variation, we used 448 unrelated
wild accessions of black cottonwood (Populus trichocarpa) from much of its range in western …

Adaptation to climate across latitude and altitude reflects shared climatic constraints, which
may lead to parallel adaptation. However, theory predicts that higher gene flow should favor …

Genome‐wide association studies (GWAS) have great promise for identifying the loci that
contribute to adaptive variation, but the complex genetic architecture of many quantitative …

The increasing ecological and economical importance of P opulus species and hybrids has
stimulated research into the investigation of the natural variation of the species and the …

Spring bud‐break phenology is a critical adaptive feature common to temperate perennial
woody plants. Understanding the molecular underpinnings of variation in bud‐break is …

Understanding the origin and distribution of genetic diversity across landscapes is critical for
predicting the future of organisms in changing climates. This study investigated how …

Genome‐wide association studies (GWAS) have been used extensively to dissect the
genetic regulation of complex traits in plants. These studies have focused largely on the …

Plant population genomics informs evolutionary biology, breeding, conservation and
bioenergy feedstock development. For example, the detection of reliable phenotype …

Genecological studies in widespread tree species have revealed steep genetic clines along
environmental gradients for climate‐related traits. In a changing climate, the ecological and …