# Chinese Cabbage Changes Its Release of Volatiles to Defend against _Spodoptera litura_
## 3 Results
### Quantities of 16 Specific Compounds Released
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Number** & **Compound** & \multicolumn{2}{c}{**Linear Regression Equation**} & \multicolumn{1}{c}{\(R^{2}\)} & \(p\) \\ \hline \multirow{2}{*}{1} & \multirow{2}{*}{_E_-2-hexenal} & y\({}_{1}=-0.1582\)x + 0.7733 & 0.9729 & 0.0118 \\ \cline{3-5}  & & y\({}_{2}=0.0471\)x + 0.6524 & 0.9286 & 0.0195 \\ \hline \multirow{2}{*}{2} & \multirow{2}{*}{(Z)-3-hexen-1-ol} & y\({}_{1}=0.0106\)x + 0.0504 & 0.3947 & 0.0931 \\ \cline{3-5}  & & y\({}_{2}=0.0025\)x + 0.6880 & 0.0926 & 0.6650 \\ \hline \multirow{2}{*}{3} & Butane, & y\({}_{1}=0.0308\)x + 0.2432 & 0.0011 & 0.4750 \\ \cline{3-5}  & 1-isothiocyanato & y\({}_{2}=0.3384\)x + 0.6775 & 0.3567 & 0.3794 \\ \hline \multirow{2}{*}{4} & 1-Butene, & y\({}_{1}=-0.0148\)x + 0.4032 & 0.6497 & 0.0320 \\ \cline{3-5}  & 4-isothiocyanato & y\({}_{2}=0.0087\)x + 0.6470 & 0.6842 & 0.0164 \\ \hline \multirow{2}{*}{5} & \multirow{2}{*}{(Z)-3-hexenyl acetate} & y\({}_{1}=0.2949\)x + 0.0161 & 0.4216 & 0.9269 \\ \cline{3-5}  & & y\({}_{2}=-0.0011\)x + 0.7239 & 0.0003 & 0.9830 \\ \hline \multirow{2}{*}{6} & Limonene & y\({}_{1}=0.1476\)x + 0.1863 & 0.7317 & 0.0230 \\ \cline{3-5}  & & y\({}_{2}=-0.4678\)x + 0.8237 & 0.6379 & 0.0123 \\ \hline \multirow{2}{*}{7} & Allyl isothiocyanate & y\({}_{1}=0.0083\)x + 0.1218 & 0.2929 & 0.4685 \\ \cline{3-5}  & & y\({}_{2}=0.0018\)x + 0.6892 & 0.0170 & 0.8381 \\ \hline \multirow{2}{*}{8} & Linalool & y\({}_{1}=0.2530\)x + 0.1196 & 0.7105 & 0.0132 \\ \cline{3-5}  & & y\({}_{2}=-0.0775\)x + 0.7788 & 0.1037 & 0.7103 \\ \hline \multirow{2}{*}{9} & Nonanal & y\({}_{1}=0.0929\)x + 0.1616 & 0.0626 & 0.1375 \\ \cline{3-5}  & & y\({}_{2}=-0.1147\)x + 0.8738 & 0.8862 & 0.0179 \\ \hline \multirow{2}{*}{10} & Decanal & y\({}_{1}=-1.870\)x + 0.8797 & 0.3402 & 0.5150 \\ \cline{3-5}  & & y\({}_{2}=0.9045\)x + 0.4791 & 0.9739 & 0.0083 \\ \hline \multirow{2}{*}{11} & Benzyl isothiocyanate & y\({}_{1}=0.1529\)x \(-\) 0.1278 & 0.1784 & 0.1890 \\ \cline{3-5}  & & y\({}_{2}=-0.0126\)x + 0.8033 & 0.3965 & 0.3324 \\ \hline \multirow{2}{*}{12} & Tetradecane & y\({}_{1}=-0.8443\)x + 0.6144 & 0.2143 & 0.9933 \\ \cline{3-5}  & & y\({}_{2}=-0.1241\)x + 0.7769 & 0.1323 & 0.6718 \\ \hline \multirow{2}{*}{13} & Pentadecane & y\({}_{1}=0.0039\)x + 0.2349 & 0.0356 & 0.4825 \\ \cline{3-5}  & & y\({}_{2}=-0.0047\)x + 0.7575 & 0.4602 & 0.3447 \\ \hline \multirow{2}{*}{14} & Hexadecane & y\({}_{1}=1.7680\)x \(-\) 0.1478 & 0.6716 & 0.0163 \\ \cline{3-5}  & & y\({}_{2}=-1.560\)x + 1.085 & 0.6310 & 0.0205 \\ \hline \multirow{2}{*}{15} & Heptadecane & y\({}_{1}=0.0553\)x + 0.2272 & 0.0161 & 0.4896 \\ \cline{3-5}  & & y\({}_{2}=-0.1963\)x + 0.8132 & 0.6293 & 0.0228 \\ \hline \multirow{2}{*}{16} & Octadecane & y\({}_{1}=0.4606\)x + 0.1868 & 0.0128 & 0.2183 \\ \cline{3-5}  & & y\({}_{2}=-0.9494\)x + 0.9098 & 0.5175 & 0.0263 \\ \hline \hline \end{tabular} Pearson correlation coefficient (\(R^{2}\)) between different classes of volatiles released and selection rate of _M. similis_ and _S. litura_. “x” in the equations represents the quantity of specific volatiles released. “y\({}_{1}\)” represents the selection rate of _M. similis_ as affected by treatments, and “y\({}_{2}\)” represents the selection rate of _S. litura_ as affected by treatments, significantly correlation at \(p\) < 0.05.  
\end{table} 
Table 2: Linear relationships between quantities of specific volatiles emitted by Chinese cabbage plants under different treatments and the selection rates of _M. similis_ and _S. litura_.