Figures (7)  Tables (0)

    • Figure 1. 

      The change trends of VOCs in the petals of 32 rose germplasms. (a) The total contents and types of VOCs. Different lower case letters indicate significant differences between germplasms at α = 0.05. ** Indicates significant differences at the 0.01 level. (b) Distribution of four VOC categories.

    • Figure 2. 

      Compound composition of monoterpenoids and benzenoids/phenylpropanoids in the petals of 32 rose germplasms.

    • Figure 3. 

      The OAV changes of 15 aromatic compounds in the petals of 32 rose germplasms.

    • Figure 4. 

      The radar chart of different scent types in the petals of 32 rose germplasms. (a) The radar chart of eight scent types. (b) The radar chart of four main scent types. (c) The scent traits of floral-geranium scent germplasms. (d) The scent traits of floral-green rose scent germplasms. (e) The scent traits of floral-sweet rose scent germplasms. (f) The scent traits of floral-lily scent germplasms. (g) The scent traits of floral-mined scent germplasms.

    • Figure 5. 

      The level changes of key characteristic component contents and related gene expressions in the petals of five rose germplasms. (a) Change of aromatic contents and gene expression patterns. (b) Correlation analysis results. ** Indicates a correlation significant at the 0.01 level.

    • Figure 6. 

      The level changes of four key characteristic components and five key gene expressions in the petals of 21 rose germplasms. (a) Change of aromatic contents. (b) Change of gene expressions. (c) Correlation analysis results. ** Indicates a correlation significant at the 0.01 level.

    • Figure 7. 

      The changes of fluorescent phenotype, gene expression, aromatic compound content, and OAV levels after transient expression of RrTPS1, and co-expression of RrAAAT1 and RrPAR2. (a) The changes after overexpression of RrTPS1. (b) The changes after co-expression of RrAAAT1 and RrPAR2. ** Indicates significant differences at the 0.01 level. ns indicates no statistically significant difference.