## 3 Results
### Results of Germination Tests and Morphometric Analyses of Seedlings  
#### 3.2.1. Germination Tests  
Pepper seed (_C. annuum_ L.) germination was lower in all treatments with plant aqueous extracts in comparison with the control, i.e., untreated variant (Table 5). Moreover, the nettle (_U. dioica_ L.) aqueous extract at 10% concentration completely inhibited the germination of pepper seeds (Table 5, Figures A1-A4) and germination of pepper seeds was lower in comparison with the control in all variants treated with aqueous extracts of wormwood herbs, black cumin and chia plants at concentrations of 10%. \begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Compound**} & \multicolumn{3}{c}{**Extract Concentration**} \\ \cline{2-4}  & **2.5\%** & **5\%** & **10\%** \\ \cline{2-4}  & & **mg L\({}^{-1}\)** & \\ \hline Epigallocatechin gallate & 0.09 \(\pm\) 0.02 & 0.07 \(\pm\) 0.02 & 0.09 \(\pm\) 0.02 \\ Quercetin 3-\(O\)-rhammoside & 0.04 \(\pm\) 0.02 & 0.74 \(\pm\) 0.11 & 0.93 \(\pm\) 0.10 \\ Epicatechin gallate & 0.77 \(\pm\) 0.15 & 0.47 \(\pm\) 0.21 & 0.89 \(\pm\) 0.15 \\ Catechin & 0.14 \(\pm\) 0.03 & 0.03 \(\pm\) 0.02 & 0.24 \(\pm\) 0.06 \\ Epicatechin & 18.50 \(\pm\) 1.78 & 14.45 \(\pm\) 1.87 & 19.99 \(\pm\) 2.06 \\ Kaempfer & 0.94 \(\pm\) 0.21 & 0.89 \(\pm\) 0.16 & 0.96 \(\pm\) 0.27 \\ Naringenin & 0.19 \(\pm\) 0.10 & 1.19 \(\pm\) 0.03 & 0.11 \(\pm\) 0.02 \\ Syringic acid & 0.23 \(\pm\) 0.07 & 0.30 \(\pm\) 0.09 & 0.15 \(\pm\) 0.01 \\ Ferrulic acid & 0.25 \(\pm\) 0.04 & 0.17 \(\pm\) 0.04 & 0.67 \(\pm\) 0.12 \\ Scopoletin & 0.54 \(\pm\) 0.06 & 0.34 \(\pm\) 0.26 & 0.30 \(\pm\) 0.16 \\ Quinic acid & 0.93 \(\pm\) 0.10 & 8.87 \(\pm\) 0.79 & 10.67 \(\pm\) 0.39 \\ Caffeic acid & 0.04 \(\pm\) 0.04 & 0.09 \(\pm\) 0.09 & 0.76 \(\pm\) 0.26 \\ Esculetin & 5.11 \(\pm\) 0.71 & 4.44 \(\pm\) 0.43 & 7.15 \(\pm\) 0.62 \\ Gallic acid & 0.77 \(\pm\) 0.19 & 0.49 \(\pm\) 0.06 & 0.57 \(\pm\) 0.05 \\ \(p\)-Coumaric acid & 0.07 \(\pm\) 0.01 & 0.09 \(\pm\) 0.02 & 0.06 \(\pm\) 0.00 \\ Umbelliferone & 0.30 \(\pm\) 0.12 & 0.16 \(\pm\) 0.06 & 0.49 \(\pm\) 0.06 \\ Gentisic acid & 0.03 \(\pm\) 0.02 & 0.03 \(\pm\) 0.02 & 0.05 \(\pm\) 0.04 \\ Protocatalytic acid & 0.03 \(\pm\) 0.03 & 0.02 \(\pm\) 0.01 & 0.02 \(\pm\) 0.01 \\ Cinnamic acid & 0.88 \(\pm\) 0.28 & 0.94 \(\pm\) 0.17 & 6.13 \(\pm\) 0.37 \\ \(p\)-Hydroxypbenzoic acid & 1.05 \(\pm\) 0.19 & 1.02 \(\pm\) 0.22 & 0.99 \(\pm\) 0.15 \\ \hline \hline \end{tabular}  
* Results are expressed as mean \(\pm\) SD.  
\end{table} 
Table 4: Phytochemical composition of nettle (_U. dioica_ L.) aqueous extracts of different concentrations. \begin{table}
\begin{tabular}{c c c c} \hline \hline \multirow{2}{*}{**Control**} & \multicolumn{3}{c}{**71.5 \(\pm\) 5.74**} \\ \cline{2-4}  & **Chia** & **Black Cumin** & **Wormwood Herbs** & **Nettle** \\ \cline{2-4}  & **(S. hispanica L.)** & **(N. sattiva L.)** & **(_A. absithithum_ L.)** & **(_U. dioica_ L.)** \\ \hline
2.5\% & 61.0 \(\pm\) 6.00 \({}^{\text{a}}\) & 64.0 \(\pm\) 9.52 \({}^{\text{a}}\) & 64.5 \(\pm\) 5.74 \({}^{\text{b}}\) & 55.5 \(\pm\) 11.70 \({}^{\text{a}}\) \\
5\% & 66.5 \(\pm\) 3.41 \({}^{\text{b}}\) & 64.0 \(\pm\) 10.95 \({}^{\text{a}}\) & 57.5 \(\pm\) 16.44 \({}^{\text{a}}\) & 43.5 \(\pm\) 13.30 \({}^{\text{b}}\) \\
10\% & 65.5 \(\pm\) 2.51 \({}^{\text{b}}\) & 52.5 \(\pm\) 5.97 \({}^{\text{b}}\) & 31.5 \(\pm\) 15.17 \({}^{\text{c}}\) & 0.0 \(\pm\) 0.00 \\ \hline \hline \end{tabular}  
* The values with different letters in superscript are significant \(p\)\(<\) 0.05.  
\end{table} 
Table 5: Comparison of differences of means for pepper seeds germination (_C. annuum_ L.) (The values in the table represent the mean value of germination rate in % \(\pm\) SD). Despite the huge decrease in germination rates in all treated variants in the comparison with control, i.e., not treated variant, it is obvious that only few differences were statistically significant.