Transcriptome-referenced association study provides insights into the regulation of oil and fatty acid biosynthesis in Torreya grandis kernel

Population genetic analyses of T. grandis. (A) Geographical origin of T. grandis landraces. (B) Neighbor-joining phylogenetic tree constructed using 275,924 SNPs. Colors indicate the following groups: blue, Shexian; green, Chun’an; red, Huizhou; yellow, Shaoxing; yellow-green, Fuyang. (C) PCA plots of the first two components of 170 T. grandis landraces. Each point represents an independent landrace of T. grandis. (D) Population structure analysis with different numbers of clusters.