## 2 Results
### Phytotoxicity of EOs in Vapor Phase
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**N\({}^{\circ}\)**} & \multirow{2}{*}{**Component \({}^{\ddagger}\)**} & \multirow{2}{*}{**Symbol \({}^{\ddagger}\) Class**} & \multirow{2}{*}{**LRI \({}^{\ddagger}\)**} & \multirow{2}{*}{**LRI \({}^{\ddagger}\)**} & \multirow{2}{*}{_A. alba (\%) s**} & \multicolumn{2}{c}{_P. cembra (\%)\({}^{\ddagger}\)_} & \multicolumn{1}{c}{_P. mugo (\%)\({}^{\ddagger}\)_} \\ \cline{1-1} \cline{6-10}
39 & _a_-copaene & s & 1377 & 1368 & - & - & 0.1 \(\pm\) 0.01 & - \\
40 & _a_-cubeene & s & 1386 & 1381 & 0.2 \(\pm\) 0.02 & - & 0.1 \(\pm\) 0.00 & - \\
41 & Ionigcylene & s & 1400 & 1392 & - & 0.4 \(\pm\) 0.02 & - & - \\
42 & _a_-longipniene & s & 1406 & 1400 & 1.8 \(\pm\) 0.02 & - & - & - \\
43 & Ionigfolene & s & 1413 & 1408 & 1.1 \(\pm\) 0.02 & 2.7 \(\pm\) 0.03 & - & - \\
44 & _\(\beta\)-caryophyllene & s & 1429 & 1424 & 9.6 \(\pm\) 0.04 & 3.7 \(\pm\) 0.03 & 0.9 \(\pm\) 0.03 & 2.0 \(\pm\) 0.02 \\
45 & aromandendrene & s & 1458 & 1460 & 1.5 \(\pm\) 0.02 & - & 0.2 \(\pm\) 0.02 & - \\
46 & humulene & s & 1471 & 1465 & 3.4 \(\pm\) 0.02 & 1.4 \(\pm\) 0.02 & 0.5 \(\pm\) 0.02 & 0.3 \(\pm\) 0.02 \\
47 & _\(\beta\)-eudesemene & s & 1490 & 1483 & 0.4 \(\pm\) 0.02 & - & - \\
48 & \(\gamma\)-muurolene & s & 1494 & 1487 & - & 0.2 \(\pm\) 0.02 & 0.9 \(\pm\) 0.02 & 0.1 \(\pm\) 0.01 \\
49 & _\(\beta\)_-bisabloene & s & 1499 & 1494 & 0.9 \(\pm\) 0.02 & - & - \\
50 & _a_-francesene & s & 1501 & 1496 & - & 0.3 \(\pm\) 0.02 & - & - \\
51 & _\(\beta\)_-bimachalene & s & 1505 & 1495 & 0.9 \(\pm\) 0.02 & - & - & - \\
52 & germcarene D & s & 1509 & 1500 & - & 0.5 \(\pm\) 0.02 & 1.5 \(\pm\) 0.02 & 0.2 \(\pm\) 0.02 \\
53 & _\(\beta\)_-bisabloene & s & 1512 & 1501 & - & 0.3 \(\pm\) 0.02 & 0.7 \(\pm\) 0.02 & - \\
54 & _\(\gamma\)_-cadinene & s & 1515 & 1508 & - & - & 0.9 \(\pm\) 0.02 & - \\
55 & _\(\delta\)_-cadinene & s & 1524 & 1530 & 1.8 \(\pm\) 0.02 & 1.9 \(\pm\) 0.03 & 2.4 \(\pm\) 0.02 & 0.5 \(\pm\) 0.02 \\
56 & _\(\alpha\)_-muurolene & s & 1530 & 1534 & - & 0.5 \(\pm\) 0.02 & 0.2 \(\pm\) 0.02 & 0.3 \(\pm\) 0.02 \\
57 & _\(\alpha\)_-calacorene & s & 1543 & 1539 & 0.2 \(\pm\) 0.02 & - & - & - \\
58 & _\(\beta\)_-calacorene & s & 1554 & 1548 & tr & - & - & - \\
59 & spathulenol & s & 1612 & 1601 & - & - & 0.4 \(\pm\) 0.02 & 0.1 \(\pm\) 0.02 \\
60 & caryophyllene & s & 1617 & 1613 & 1.0 \(\pm\) 0.01 & 0.2 \(\pm\) 0.02 & 0.1 \(\pm\) 0.00 & 0.2 \(\pm\) 0.02 \\ oxide & & & & & & & & \\
61 & epibench & s & 1622 & 1618 & 0.4 \(\pm\) 0.02 & 0.2 \(\pm\) 0.02 & - & - \\
62 & _\(\beta\)_-himachalol & s & 1642 & 1637 & 0.7 \(\pm\) 0.02 & - & - & - \\
63 & _\(\tau\)_-muurolol & s & 1653 & 1647 & - & 0.6 \(\pm\) 0.02 & - & - \\
64 & _a_-bisabolol & s & 1672 & 1668 & - & tr & 0.1 \(\pm\) 0.01 & - \\
65 & _a_-candiol & s & 1680 & 1676 & - & 0.3 \(\pm\) 0.02 & 0.2 \(\pm\) 0.02 & 0.1 \(\pm\) 0.00 \\
66 & cembrene & s & 1955 & 1948 & - & 1.1 \(\pm\) 0.02 & - & - \\
67 & _a_-camphorene & s & 1976 & 1970 & - & 0.2 \(\pm\) 0.02 & - & - \\
68 & geranyllinalool & s & 2025 & 2020 & - & 0.2 \(\pm\) 0.02 & - & - \\  & SUM & & & & & & & \\ \hline Monoterepnes & & & & & & & & \\ Sesquiterpenes & & & & & & & & \\ Other & & & & & & & & & \\ \hline \end{tabular} \({}^{\ddagger}\) The components are reported according to their elution order on apolar column; \({}^{\ddagger}\) Symbol for class compound, m—monoterpnes. s—sesquiterpenenes. \({}^{\ddagger}\) Linear Retention indices measured on apolar column. \({}^{\ddagger}\) Linear Retention indices from literature. \({}^{\ddagger}\) Percentage values of _A. alba_ EO components (%). \({}^{\ddagger}\) Percentage values of _P. abies_ EO components. \({}^{\ddagger}\) Percentage mean values of _P. cembra_ EO components (%). \({}^{\ddagger}\) Percentage mean values of _P. mugo_ EO components. \({}^{\ddagger}\) Not detected; tr traces (mean value <0.1%).  
\end{table} 
Table 3: Germination and growth values of two receiver species under the phytotoxic effects of different doses of EOs (vapor phase) in pre-emergence conditions.