## 2 Results and Discussion
The undertaken study has shown a multiple of influences of the phytopathogens infecting seed potatoes on both emitted volatile organic compounds and individual parameters of plant growth, development, and physiological activity. The obtained results coincided in varying degrees and were often complimented, which indicates the necessity to use a wide range of tests to comprehensively investigate the effects of seed potato treating. The positive or negative relationships between the growth kinetics of stems and roots and their physiological activities indicate the applicability of specific parameters as markers of the biological quality of seed potatoes exhibiting different physiological states. The seed potatoes' quality could be linked to a variety of biochemical and physiological changes that are required to initiate germination processes followed by the growth of plants and their yielding potential. Untreated (control) seed potatoes stored at 4 \({}^{\circ}\)C from harvest until 10 February 2021, and then at 15 \({}^{\circ}\)C and 80% RH for the next three months until 10 May, were characterized by high health and typical phenotypic features. They germinated in 100% RH after planting in the substrate at 20 \({}^{\circ}\)C (Figure 3). During planting in the plant microcosms on 10 March, they had dormant buds, while when planting on 10 April and 10 May, they were already sprouted and produced sprouts with a length of approx. 2 and 5 cm, respectively. The \begin{table}
\begin{tabular}{c c c} \hline \hline
**Marker of Pathogen Infestation** & **Compound Name** & **Origin * (M/P)** \\ \hline _A. alternata_ & D-Limonene (no. 78) & M [7,44,45,61]; P [58] \\  & Pentane (no. 114) & M [7,49] \\  & Cyclohexane (no. 68) & M [61] \\ \hline _A. solani_ & 1-Octen-3-one (no. 18) & M [36,57] \\  & 3-Carene (no. 36) & M [35] \\ \hline _A. tenuissima_ & Isobutylbenzene (no. 96) & \# \\  & 2,6,11-Trimethyldodecane (no.26) & M [53] \\  & Benzothiazole (no. 64) & M [45]; P [58] \\  & \(\beta\)-Cedrene (no. 129) & M [64] \\ \hline _R. solani_ & 1,2,4-Trimethylbenzene (no. 7) & M [7,52]; P [58] \\ \hline _C. coccodes_ & D-Limonene (no. 78) & M [7,45,46,61]; P [58] \\  & 3-Octanone (no. 55) & M [7,50,51,53] \\  & 4-Methyloctane (no. 58) & M [51] \\  & 1,2,4-Trimethylbenzene (no. 7) & M [7,52]; P [58] \\ \hline _P. exigua_ & 2-ethyl-1,4-dimethylbenzene (no. 21) & M [60] \\  & 1,2,4-Trimethylcyclopentane (no. 8) & \# \\  & 2-Hexanone (no. 33) & M [63] \\ \hline _P. carolovorum_ & 2-Methylbutanal (no. 51) & M [50,52]; P [58] \\  & 3-Methylbutanal (no. 50) & M [50,52]; P [58] \\  & Eucalyptus! (no. 86) & M [7,44] \\ _S. scabiei_ & 2-Phenylisopropanol (no. 43) & M [66] \\  & Cyclopentanatone (no. 70) & M [7]; P [7] \\  & Hexadecane (no. 89) & M [45,52]; P [7] \\  & D-Limonene (no. 78) & M [7,44,45,61]; P [58] \\ \hline _P. carolovorum_ & D-Limonene (no. 78) & M [7,44,45,61]; P [58] \\  & 2-Butanol (no. 28) & M [7]; P [58] \\ \hline \multirow{7}{*}{Present only in control sample, not infected with pathogens} & 1-Butanol (no. 10) & M [53]; P [58] \\  & 2,6-Dimethylundecane (no. 27) & M [53] \\  & 2-Butanone (no. 29) & M [56]; P [58,67] \\ \cline{1-1}  & 2-Pentanone (no. 41) & M [7,50,63]; P [61] \\ \cline{1-1}  & Benzaldehyde (no. 61) & M [7,52,61] \\ \cline{1-1}  & Ethyl acetate (no. 81) & M [7] \\ \cline{1-1}  & Undecane (no. 124) & M [53]; P [58] \\ \hline \hline \end{tabular} All compound numbers refer to the order in Table S1. * M—microbial, P—plant,* unknown origin.  
\end{table} 
Table 3: _Cont._plants obtained from them, in the performed three cultivation periods presented, started to emerge 6 days after planting of the seed potatoes and grew for the next 72 days, reaching the final height of 80-85 cm and forming flower buds. The plants obtained from sprouted seed potatoes planted on 10 April and 10 May, developed correspondingly earlier and faster than those grown from mother tubers planted in March with dormant buds (Figure 4).