Supplemental information for the manuscript submitted to Horticulture Research (HR-2025-375) Title: Haplotype resolved genome of a citronella provides insights into the evolution of citronelloid biogenesis pathway

Supplementary information for the submitted manuscript to Horticulture ResearchFigure S1. Phylogenetic trees of the TPS involved in the terpenoids biosynthetic pathway.Figure S2. Phylogenetic trees of the ADH/GeDH/CAD involved in the terpenoids biosynthetic pathway.Figure S3. Phylogenetic trees of the GER/CIR involved in the terpenoids biosynthetic pathway.Figure S4. Phylogenetic trees of the OPR involved in the terpenoids biosynthetic pathway.Figure S5. Phylogenetic trees of the PAR/CAR involved in the terpenoids biosynthetic pathway.Figure S6. Relative expression levels of candidate genes in root, shoot and leaves of <i>C. winterianus</i> by RT-qPCR.Table S1. The relative contents of metabolites in terpenoids biosynthesis by HS-SPME/GC-MS in C. winterianus.Table S2. Reported genes involved in the citronellal synthesis pathways of other species. Table S3. Expression analysis of citronelloid biogenesis genes in Cymbopogon. Table S4. Co-expression analysis result between citronellol synthesis pathway genes and geraniol contents. Table S5. The list of each cluster genes.Table S6. List of cluster-enriched genes with an adjusted pct.1 &gt; 0.3 in target cluster and pct.2 &lt; 0.1 in other 11 clusters.Table S7. Expression of candidate genes involved in the citronellol biosynthesis pathway of C. winterianus.Table S8. Primers for real-time PCR.Materials and methods