## 3 Results
### Physiological Indicators of Yield
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline \multicolumn{2}{c}{**Experimental Factors**} & \multicolumn{8}{c}{**Physiological Indicators of Plant Growth**} \\ \cline{3-10}  & **Fo** & **Fm** & **Fv/FM** & **Fo\({}^{\prime}\)** & **Fm\({}^{\prime}\)** & **Y** & **Qp** & **Qn** \\ \hline \multirow{3}{*}{Pre-plantingtreatments} & Control object & 0.218 a & 0.814 a & 0.580 a & 0.188 b & 0.324 a & 0.363 a & 0.499 a & 0.130 a \\  & Exposition I* & 0.230 b & 0.861 b & 0.626 b & 0.211 c & 0.381 c & 0.402 b & 0.581 c & 0.145 b \\  & Exposition II* & 0.227 a & 0.866 b & 0.616 b & 0.178 a & 0.350 b & 0.361 a & 0.529 b & 0.125 a \\ \cline{2-10}  & HSD* \(p_{\leq 0.05}\) & 0.011 & 0.043 & 0.031 & 0.010 & 0.018 & 0.017 & 0.028 & 0.007 \\ \hline \multirow{10}{*}{Cultivas} & Dream* & 0.205 a & 0.856 a & 0.586 a & 0.155 a & 0.329 a & 0.341 a & 0.489 a & 0.120 a \\  & Selfinoxas* & 0.217 a & 0.777 a & 0.542 a & 0.165 a & 0.311 a & 0.331 a & 0.460 a & 0.128 a \\  & [PERSON]* & 0.204 a & 0.749 a & 0.548 a & 0.160 a & 0.318 a & 0.337 a & 0.470 a & 0.140 b \\  & [PERSON]* & 0.210 a & 0.786 a & 0.558 a & 0.172 a & 0.347 a & 0.376 a & 0.509 a & 0.139 a \\  & [PERSON]* & 0.208 a & 0.756 a & 0.559 a & 0.161 a & 0.323 a & 0.335 a & 0.484 a & 0.128 a \\  & Vineta* & 0.225 a & 0.856 a & 0.592 a & 0.181 a & 0.349 a & 0.380 a & 0.590 b & 0.138 a \\  & [PERSON]* & 0.226 a & 0.835 a & 0.610 a & 0.204 b & 0.343 a & 0.401 b & 0.556 a & 0.134 a \\  & [PERSON]* & 0.254 a & 0.975 b & 0.672 b & 0.210 b & 0.397 b & 0.372 a & 0.604 b & 0.134 b \\  & [PERSON]* & 0.252 a & 0.995 b & 0.687 b & 0.225 b & 0.375 a & 0.408 b & 0.641 b & 0.152 b \\  & Talfurn* & 0.228 a & 0.857 a & 0.615 a & 0.214 b & 0.357 a & 0.404 b & 0.548 a & 0.135 a \\  & Jelly* & 0.242 a & 0.899 a & 0.670 b & 0.213 b & 0.390 a & 0.405 b & 0.591 b & 0.137 a \\  & Monode* & 0.240 a & 0.887 a & 0.629 a & 0.217 b & 0.371 a & 0.420 b & 0.570 b & 0.141 a \\  & Svena* & 0.230 a & 0.861 a & 0.641 a & 0.221 b & 0.372 a & 0.421 b & 0.551 a \\  & Kuras* & 0.203 a & 0.800 a & 0.575 a & 0.188 a & 0.338 a & 0.327 a & 0.445 a & 0.110 a \\ \cline{2-10}  & HSD* & ** & 0.202 & 0.125 & 0.046 b & 0.084 & 0.077 & 0.125 & 0.030 \\ \hline \multirow{10}{*}{Years} & 2017 & 0.228 b & 0.823 a & 0.627 a & 0.194 a & 0.356 b & 0.345 a & 0.490 a & 0.138 b \\  & 2018 & 0.244 c & 0.824 a & 0.592 a & 0.194 a & 0.324 a & 0.403 c & 0.541 b & 0.115 a \\  & 2019 & 0.202 a & 0.857 b & 0.605 a & 0.187 a & 0.375 c & 0.379 b & 0.578 c & 0.147 c \\ \cline{1-1} \cline{2-10}  & HSD*,0.015 & 0.013 & 0.050 & ns *** & ns *** & 0.018 & 0.022 & 0.032 & 0.008 \\ \hline \multicolumn{2}{c}{Mean} & 0.225 & 0.847 & 0.608 & 0.192 & 0.351 & 0.376 & 0.536 & 0.133 \\ \hline \multicolumn{2}{c}{F\(\sim\)minimum fluorescence yield, F\(\sim\)maximum fluorescence yield, F\(\sim\)Pmaximum fluorescence yield, F\(\sim\)Pmaximum fluorescence yield, F\(\sim\)variable fluorescence yield, Y\(\sim\)actual photochemical efficiency of PSI, g\(\sim\)photochemical fluorescence quenching coefficient, y\(\sim\)gas-engrochemical fluorescence quenching coefficient, 10 min exposure, 15 min exposure, 1520 *-housely significant difference: *** No significant differences at the level of g \(<\)0.05; letter indicates (a, b, c, etc.) next to the mean values indicate benzogenus (statistical) benzogenus groups. The presence of the same letter indicator next to the means signifies that there were no statistically significant differences at the \(p<0.05\) level between them.} \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Influence of pre-planting treatments, cultivars, and years of research on the values of the physiological indicators of potatoes. The genetic characteristics of the tested cultivars had no significant impact on the initial fluorescence (Fo). The lowest value was found in the late starch cultivar 'Kuras', and the highest in the cultivar 'Oberon'. On the other hand, the changing meteorological conditions over the years of the study significantly altered the value of the Fo parameter.