## 2 Results and Discussion
### Volatile Compounds of Different Parts of the \(P\). Nobby's Pacific Sunset Flowers  
In this study, \(P\). Nobby's Pacific Sunset flowers were separated into five parts: petal, dorsal sepal, lateral sepal, lip and column. This study used SPME to extract the odor of each part of the \(P\). Nobby's Pacific Sunset flower and identified 80.98%-88.34% of its constituents (Table 2). Figure 4: Changes in the volatile components of \(P\). Nobby’s Pacific Sunset during the blooming cycle. Values are means \(\pm\) SD of triplicates. Values having different superscripts are significantly (\(p<0.05\)) different. Figure 5: Changes in the major volatile components of \(P\). [PERSON]’s Pacific Sunset during the blooming cycle. \begin{table}
\begin{tabular}{c c c c c c c c} \hline
**RI \({}^{\star}\)** & **Compound** & **Whole Flowers** & **Petals** & **Lateral Sepals** & **Dorsal Sepals** & **Lip** & **Column** \\ \hline
641 & 2-methyl butanal & \(0.60\pm 0.15\) & \(0.26\pm 0.24\) & - \({}^{\circ}\) & - & \(0.17\pm 0.12\) & - \\
882 & styrene & \(0.02\pm 0.00\) & \(1.28\pm 1.16\) & \(0.86\pm 0.62\) & \(2.80\pm 1.78\) & - & - \\
933 & benzaldehyde & \(0.08\pm 0.02\) & - & \(0.07\pm 0.00\) & \(0.07\pm 0.00\) & \(0.05\pm 0.02\) & - \\
964 & 6-methyl-5-hepten-2-one & \(0.69\pm 0.55\) & - & \(0.48\pm 0.24\) & - & - & - \\
981 & \(\beta\)-mycene & \(3.87\pm 0.18\) & \(6.83\pm 0.05\) & \(6.35\pm 0.46\) & \(5.93\pm 0.45\) & \(5.62\pm 1.33\) & \(4.89\pm 0.21\) \\
1021 & limone & \(1.30\pm 0.04\) & \(2.27\pm 0.02\) & \(2.12\pm 0.34\) & - & \(1.95\pm 0.39\) & - \\
1023 & _cis-\(\beta\)_-coimeene & \(<\)0.01 & - & - & - & - & \(2.39\pm 0.32\) \\
1035 & _trans-\(\beta\)_-coimeene & \(2.16\pm 0.28\) & \(3.60\pm 1.03\) & \(2.98\pm 0.22\) & \(3.21\pm 0.65\) & \(2.53\pm 0.68\) & \(6.44\pm 1.62\) \\
1050 & _a_-coimeene & \(0.07\pm 0.02\) & \(0.10\pm 0.01\) & \(0.10\pm 0.03\) & \(0.08\pm 0.02\) & \(0.12\pm 0.01\) & \(0.35\pm 0.02\) \\
1060 & 3-methylphenol & \(0.07\pm 0.02\) & \(0.10\pm 0.01\) & - & - & - & - \\
1065 & 2-methylphenol & \(0.22\pm 0.10\) & \(0.33\pm 0.02\) & \(0.32\pm 0.13\) & \(0.29\pm 0.06\) & \(0.53\pm 0.06\) & \(0.84\pm 0.24\) \\
1080 & inalool & \(28.30\pm 16.78\) & \(40.24\pm 2.77\) & \(39.53\pm 7.40\) & \(42.04\pm 3.08\) & \(67.77\pm 4.98\) & \(63.53\pm 6.57\) \\
1099 & (_E_)-4,8-dimethyl-1,3,7-nonatriene & \(0.51\pm 0.06\) & \(1.33\pm 0.15\) & \(1.20\pm 0.13\) & \(1.90\pm 0.29\) & \(0.80\pm 0.05\) & - \\
1189 & methyl salicylate & \(0.11\pm 0.05\) & - & - & - & - & - \\
1201 & nerrol & \(4.54\pm 1.05\) & \(2.40\pm 0.77\) & - & - & - & - \\
1231 & geraniol & 28.31 \(\pm\) 8.97 & \(15.68\pm 4.39\) & \(17.77\pm 6.43\) & \(9.88\pm 2.07\) & \(6.50\pm 1.92\) & - \\
1233 & geraniol & - & \(1.15\pm 0.12\) & \(1.17\pm 0.15\) & - & - & - \\
1357 & neryl acetate & \(0.91\pm 0.57\) & - & - & - & \(0.59\pm 0.53\) & - \\
1360 & geranyl acetate & \(0.52\pm 0.26\) & - & - & - & - & - \\
1444 & _trans_-\(\beta\)-farmesene & \(1.08\pm 0.87\) & - & - & - & - & - \\
1469 & _a_-humulene & \(0.27\pm 0.07\) & - & - & - & - & - \\
1477 & _a_-cureuremene & \(0.29\pm 0.19\) & \(0.48\pm 0.16\) & \(0.46\pm 0.08\) & \(0.57\pm 0.11\) & \(0.16\pm 0.03\) & - \\
1481 & (_Z_,_E_)-a-farmesene & \(0.47\pm 0.07\) & - & - & - & - & - \\
1489 & \(\alpha\)-zingbiere & \(0.20\pm 0.10\) & - & - & - & - & - \\
1490 & _cis-\(\gamma\)_-bisaboleene & \(-0.01\) & - & - & - & - & - \\
1495 & (_E_,_E_)-a-farmesene & \(11.10\pm 4.49\) & \(10.33\pm 1.27\) & \(10.71\pm 3.10\) & \(13.73\pm 1.32\) & \(2.59\pm 0.47\) & \(4.83\pm 3.08\) \\
1544 & neridol & \(0.31\pm 0.24\) & - & - & - & - & - \\
1556 & _trans_-\(\gamma\)-bisaboleene & \(0.17\pm 0.05\) & - & - & - & - & - \\
1686 & _cis_-11-hexadecanel & \(0.19\pm 0.05\) & - & \(0.03\pm 0.03\) & - & - & - \\
1705 & (_Z_,_E_)-farmesol & \(0.82\pm 0.85\) & - & - & - & - & - \\
1721 & (_E_,_E_)-farmesal & \(0.17\pm 0.15\) & - & - & - & - & - \\ \hline \end{tabular} \({}^{\star}\) Retention indices, using paraffin (C\({}_{\rm r}\)C\({}_{\rm r}\)C\({}_{\rm r}\)) as references; \({}^{\star}\)undctible.  
\end{table}