## 3 Results and Discussion
### Influence of the Foliar MeI and ACP-MeI Treatments on Must Volatile Compounds
\begin{table}
\begin{tabular}{c c c c c c c} \hline  & \multicolumn{2}{c}{**Treatment (T)**} & \multicolumn{2}{c}{**Season (S)**} & \\ \hline  & **Control** & **MeJ** & **ACP-MeJ** & **2019** & **2020** &
\begin{tabular}{c} **Interaction** \\ **(T \(\times\) S)** \\ \end{tabular} \\ \hline _Terpenoids_ & & & & & & \\ Limonene & 0.101 b & 0.129 c & 0.078 a & 0.092 a & 0.113 b & * \\ p-Cymene & 0.154 a & 0.319 b & 0.141 a & 0.156 a & 0.254 b & * \\ \(\mathrm{Linalool}\) & 0.058 a & 0.140 b & 0.052 a & 0.089 a & 0.078 a & ** \\ \(\mathrm{\alpha}\)-Terpineol & 0.045 a & 0.107 b & 0.056 a & 0.073 a & 0.066 a & ** \\ Geraniol & 0.026 a & 0.025 a & 0.024 a & 0.029 b & 0.021 a & ** \\ Geranic acid & 0.098 a & 0.104 a & 0.090 a & 0.111 b & 0.084 a & ** \\ Geranyl acetone & 0.019 ab & 0.021 b & 0.016 a & 0.021 b & 0.016 a & ** \\ _Total_ & _0.501 a_ & _0.846 b_ & _0.457 a_ & _0.570 a_ & _0.632 b_ & ** \\ _C\({}_{\mathbf{13}}\) norisoprenoids_ & & & & & & \\ (E)-\(\beta\)-Damascenone & 4.093 a & 4.964 a & 4.080 a & 1.815 a & 6.944 b & * \\ (Z)-\(\beta\)-Damascenone & 0.275 a & 0.353 a & 0.327 a & 0.129 a & 0.508 b & * \\ \(\beta\)-Ionone & 0.105 b & 0.186 c & 0.076 a & 0.170 b & 0.061 a & N.S. \\ \(\beta\)-Cyclocitrical & 0.112 b & 0.113 b & 0.074 a & 0.148 b & 0.051 a & ** \\ TDN & 0.210 a & 0.346 c & 0.262 b & 0.197 a & 0.347 b & ** \\ _Total_ & _4.795 a_ & _5.942 a_ & _4.936 a_ & _2.500 a_ & 7.949 b & * \\ _Benzenoid compounds_ & & & & & & \\
2-Phenylethanol & 5.917 a & 5.528 a & 10.099 b & 6.254 a & 8.109 b & ** \\
2-Phenylethanol & 4.492 b & 4.722 b & 3.794 a & 6.128 b & 2.544 a & * \\ Eugenol & 0.010 c & 0.005 b & 0.002 a & 0.011 b & n.d. a & ** \\ Benzyl alcohol & 0.826 b & 0.511 a & 0.468 a & 0.921 b & 0.282 a & ** \\ _Total_ & _11.245 a_ & _10.766 a_ & _14.362 b_ & _13.314 b_ & _10.935 a_ & ** \\ _Alcohols_ & & & & & & \\ n-Heptanol & 0.055 b & 0.045 ab & 0.037 a & 0.045 a & 0.045 a & ** \\ n-Octanol & 0.258 b & 0.204 a & 0.173 a & 0.157 a & 0.266 b & N.S. \\ n-Nonanol & 0.130 b & 0.152 b & 0.062 a & 0.051 a & 0.178 b & ** \\
1-Octen-3-ol & 0.384 b & 0.185 a & 0.195 a & 0.378 b & 0.131 a & ** \\
2-Ethyl-1-hexanol & 2.479 c & 1.330 a & 1.883 b & 2.170 b & 1.624 a & ** \\ _Total_ & _3.307 c_ & _1.916 a_ & _2.349 b_ & _2.803 b_ & _2.245 a_ & ** \\ _Carbonyl compounds_ & & & & & & \\ \multicolumn{2}{c}{Heptanal} & 0.034 b & 0.020 a & 0.021 a & 0.041 b & 0.010 a & * \\ (E)-2-Octenal & 0.051 b & 0.038 a & 0.047 b & 0.054 b & 0.037 a & N.S. \\ Nonanal & 0.292 b & 0.129 a & 0.159 a & 0.134 a & 0.253 b & * \\ (E)-2-Nonanal & 0.056 b & 0.049 ab & 0.045 a & 0.066 b & 0.034 a & * \\ Decanal & 0.094 c & 0.069 b & 0.043 a & 0.064 a & 0.073 a & * \\ (E,E)-2,4-Hexadiene & 0.944 a & 0.888 a & 0.763 a & 1.145 b & 0.585 a & ** \\ (E,E)-2,4-Nonadienal & 0.069 a & 0.069 a & 0.053 a & 0.090 b & 0.037 a & ** \\ \(\gamma\)-Decalactone & 0.135 a & 0.149 a & 0.164 a & 0.112 a & 0.0187 b & ** \\
6-Methyl-3,5-heptadiene-2-one & 0.054 b & 0.054 b & 0.036 a & 0.070 b & 0.026 a & * \\ _Total_ & _1.729 b_ & _1.465 a_ & _1.331 a_ & 1.775 b & 1.242 a_ & ** \\ _C6 compounds_ & & & & & & \\ n-Hexanol & 14.107 a & 24.671 b & 11.398 a & 5.467 a & 27.984 b & ** \\ n-Hexanal & 16.912 b & 22.448 c & 7.592 a & 19.375 b & 11.926 a & * \\ (Z)-3-Hexen-1-ol + & 0.848 b & 0.710 b & 0.457 a & 0.576 a & 0.767 b & ** \\ (E)-2-Hexen-1-ol & & & & & & \\ (E)-2-Hexenal & 7.552 b & 14.653 c & 4.761 a & 5.708 a & 12.269 b & N.S. \\ _Total_ & _39.419 b_ & _62.482 c_ & _24.207 a_ & _31.126 a_ & 52.946 b & ** \\ _Other compounds_ & & & & & & \\ Hexyl acetate & 0.103 a & 0.361 b & 0.277 b & n.d. a & 0.494 b & ** \\ Methyl jasmonate & 0.901 b & 0.149 a & 0.117 a & 0.087 a & 0.691 b & ** \\ \hline \end{tabular}  
* TDN: 1,1,6-trimethyl-1,2-dihydronaphthalene. For each parameter and factor, different letters indicate significant differences between samples (\(p\leq 0.05\)). Interaction: *, \(p\leq 0.05\), **, \(p\leq 0.01\), ***, \(p\leq 0.001\), and N.S., not significant (\(p>0.05\)).  
\end{table}