# Monoterpenoids Evolution and MEP Pathway Gene Expression Profiles in Seven Table Grape Varieties
## 2 Results and Discussion
### Monoterpenoids Content, Flavour Contribution, Variety and Season Effect
 & **Alexandria** & **Italia** & **Tamina** & **Xiangfei** & **Zmgx** \\ \hline \(\beta\)-Myrence & tr & 0.09 \(\pm\) 0.01 d & 0.86 \(\pm\) 0.01 c & 0.97 \(\pm\) 0.01 c & 1.13 \(\pm\) 0.04 c & 2.08 \(\pm\) 0.59 b & 3.59 \(\pm\) 0.22 a \\ Limonene & 0.10 \(\pm\) 0.03 d & 0.30 \(\pm\) 0.18 d & 0.33 \(\pm\) 0.00 d & 0.94 \(\pm\) 0.00 cd & 1.21 \(\pm\) 0.06 bc & 2.75 \(\pm\) 0.97 a & 2.06 \(\pm\) 0.04 ab \\ _ftrans_-Ocimene & nd & nd & 0.21 \(\pm\) 0.00 c & 0.31 \(\pm\) 0.07 c & 0.73 \(\pm\) 0.26 b & 1.29 \(\pm\) 0.34 a & 1.51 \(\pm\) 0.07 a \\ _f-cis_-Ocimene & nd & 0.05 \(\pm\) 0.01 c & 0.52 \(\pm\) 0.01 bc & 0.94 \(\pm\) 0.00 b & 1.07 \(\pm\) 0.03 b & 2.14 \(\pm\) 0.82 a & 2.63 \(\pm\) 0.19 a \\ \(\gamma\)-Terpinen & tr & nd & 0.04 \(\pm\) 0.00 b & 0.07 \(\pm\) 0.00 b & 0.15 \(\pm\) 0.01 b & 0.42 \(\pm\) 0.21 a & 0.41 \(\pm\) 0.07 a \\ Terpinolene & 0.02 \(\pm\) 0.00 f & nd & 0.16 \(\pm\) 0.01 e & 0.24 \(\pm\) 0.01 d & 0.47 \(\pm\) 0.03 c & 1.86 \(\pm\) 0.03 a & 1.74 \(\pm\) 0.01 b \\ trans-Rose oxide & nd & nd & 0.05 \(\pm\) 0.00 c & 0.05 \(\pm\) 0.00 c & 0.06 \(\pm\) 0.00 bc & 0.21 \(\pm\) 0.17 b & 0.36 \(\pm\) 0.02 a \\ _cis_-Rose oxide & nd & nd & 0.06 \(\pm\) 0.00 c & 0.06 \(\pm\) 0.00 c & 0.08 \(\pm\) 0.00 c & 0.59 \(\pm\) 0.54 b & 1.26 \(\pm\) 0.04 a \\ _(trans_)-Allo-ocimene & 0.02 \(\pm\) 0.00 d & nd & 0.35 \(\pm\) 0.01 c & 0.39 \(\pm\) 0.08 c & 0.94 \(\pm\) 0.07 b & 2.53 \(\pm\) 0.29 a & 2.42 \(\pm\) 0.04 a \\ Allo-ocimene & 0.02 \(\pm\) 0.00 c & nd & 0.24 \(\pm\) 0.01 c & 0.21 \(\pm\) 0.06 c & 0.84 \(\pm\) 0.06 b & 2.03 \(\pm\) 0.29 a & 1.78 \(\pm\) 0.05 a \\ _trans_-furan linalool oxide & 2.69 \(\pm\) 0.01 b & 1.44 \(\pm\) 2.03 b & 0.41 \(\pm\) 1.43 b & 5.19 \(\pm\) 0.32 b & 6.64 \(\pm\) 0.87 b & 283.97 \(\pm\) 19.59 a & 179.6 \(\pm\) 3.47 b \\ _cis_-furan linalool oxide & 2.72 \(\pm\) 0.01 c & 1.62 \(\pm\) 2.29 c & 3.44 \(\pm\) 0.01 c & 9.79 \(\pm\) 0.73 c & 8.99 \(\pm\) 1.36 c & 3158.32 \(\pm\) 0.27 a & 50.62 \(\pm\) 9.76 b \\ Citronellal & 1.34 \(\pm\) 1.89 d & nd & 3.85 \(\pm\) 0.00 b & 2.97 \(\pm\) 0.12 c & 7.46 \(\pm\) 0.69 a & 5.43 \(\pm\) 0.98 ab & 6.19 \(\pm\) 0.93 a \\ Nerol oxide & 1.35 \(\pm\) 1.90 c & 3.01 \(\pm\) 0.18 c & 3.83 \(\pm\) 1.19 c & 3.31 \(\pm\) 0.71 c & 4.87 \(\pm\) 0.80 c & 47.62 \(\pm\) 3.22 a & 25.88 \(\pm\) 8.85 b \\ Lindalood & 0.14 \(\pm\) 0.00 c & 0.14 \(\pm\) 0.01 c & 7.17 \(\pm\) 0.01 c & 1.87 \(\pm\) 0.88 c & 16.39 \(\pm\) 0.13 b & 46.93 \(\pm\) 4.62 b & 3.85 \(\pm\) 2.49 b \\
4-Terpineol & tr & nd & 0.05 \(\pm\) 0.00 d & 0.06 \(\pm\) 0.01 c & 0.10 \(\pm\) 0.00 b & 0.31 \(\pm\) 0.01 a & 0.09 \(\pm\) 0.01 b \\ Neral & 0.02 \(\pm\) 0.00 d & nd & 0.19 \(\pm\) 0.00 d & 0.46 \(\pm\) 0.06 b & 0.32 \(\pm\) 0.01 bc & 0.29 \(\pm\) 0.10 bc & 0.73 \(\pm\) 0.25 a \\ \(\alpha\)-Terpineol & 0.07 \(\pm\) 0.00 d & 0.03 \(\pm\) 0.03 d & 0.89 \(\pm\) 0.00 cd & 1.41 \(\pm\) 0.25 c & 5.54 \(\pm\) 0.18 b & 10.93 \(\pm\) 1.34 a & 5.15 \(\pm\) 0.11 b \\ \(\beta\)-Cerninol & 0.15 \(\pm\) 0.00 d & 0.16 \(\pm\) 0.02 c & 1.28 \(\pm\) 0.02 b & 2.56 \(\pm\) 0.33 b & 2.18 \(\pm\) 0.12 b & 1.51 \(\pm\) 0.31 b & 4.97 \(\pm\) 2.30 a \\ \(\beta\)-Citronellol & 1.19 \(\pm\) 0.04 cd & ndIn this study, we carried out a two-way ANOVA to elucidate the effects of variety, season and variety \(\times\) season interaction in ripening table grapes for monoterrepoids. (Table 3). The results showed that genotype plays a major influence in the composition for these compounds except for citronellal and \(\gamma\)-Terpinen, and that season also plays an important role in the content of most compounds except for (_trans,cis_)-allo-ocimene, _trans_-furan lanlool oxide, _cis_-furan lanlool oxide, citronellal, \(\beta\)-citronellol, nerol, and geraniol. Moreover, the Variety \(\times\) Season interaction played a role in affecting the level of some of them. These results suggested that the seven table grape varieties showed significant differences not only in the total content of monoterrepoids but also in their composition.