## 4 Discussion
### Interdependence of Feature  
The results of the Pearson correlation analysis between potato yield, dry matter yield, starch yield, and physiological traits indicate certain relationships (Figure 2):  
Dry matter content vs. total potato yield: A minimal, negative relationship was observed between the dry matter content and total potato yield, suggesting that higher dry matter content may slightly reduce the yield. However, a strong positive correlation was found between the dry matter yield in tubers and total yield, indicating that a higher total potato yield corresponds to a greater dry matter content in tubers. Similar relationships were confirmed by [PERSON] et al. [5] and [PERSON] et al. [61]. Starch content vs. independent variables: It was found that the starch content exhibited weak or no correlations with the analyzed independent variables. Nevertheless,a strong positive correlation was observed between the starch yield and the total tuber yield, emphasizing a significant connection between these variables. Similar results were obtained in the study by [PERSON] et al. [55]. The research also revealed a strong correlation between the fluorescence intensity Fm\({}^{\prime}\) (maximum fluorescence in light) and starch yield. A higher Fm\({}^{\prime}\) fluorescence intensity was positively correlated with a higher starch yield, suggesting a significant relationship between the Fm\({}^{\prime}\) fluorescence intensity and starch production. This indicates potential associations between photosynthesis and starch accumulation processes [41]. Chlorophyll fluorescence (Fo, Fm, Fr\({}^{\prime}\)/Fm, Fo\({}^{\prime}\), Fm\({}^{\prime}\)) vs. other variables: Most variables related to chlorophyll fluorescence displayed weak or no correlations with other parameters. An exception is the positive correlation between starch yield and Fm fluorescence, indicating some intrinsic interdependencies. This is a notable observation since Fm fluorescence intensity measures the maximum chlorophyll fluorescence response to light, and the starch yield reflects the amount of starch produced by the plant. The correlation suggests a strong connection between photosynthesis and starch accumulation, which impacts the overall plant yield [14; 41]. Efficiency of Photosystem II (Fv/Fm) vs. other variables: Slight positive correlations were found between the efficiency of Photosystem II (Fv/Fm) and other parameters, suggesting potential relationships between photosynthesis efficiency and other potato characteristics. However, the correlation between the Fo fluorescence intensity (a measure of the initial reaction of chlorophyll to light before it is excited) and the analyzed dependent variables was weak or non-existent, suggesting limited dependence between these variables [15]. Photosynthetic parameters (Y, Qp, Qn) vs. other variables: Correlations between the photosynthetic parameters and other variables varied. The analysis of chlorophyll fluorescence in relation to photosynthesis efficiency (Y) and other variables generally revealed low or near-zero correlations. The parameter Y represents the quantum efficiency of photosynthesis, indicating the proportion of absorbed photons by chlorophyll to those reaching the plant. Higher Y values signify better photosynthetic efficiency, while lower values may indicate potential metabolic issues [20; 47]. However, it is important to note that the absence of strong relationships in the correlation analysis does not necessarily imply a complete lack of connections. There could be other unexplored factors or complex interactions at play. To delve deeper into the relationships between photosynthesis efficiency and plant characteristics, more advanced statistical techniques or additional experiments may be needed. Therefore, Y is just one of many indicators used to assess the photosynthesis efficiency. Further investigations considering additional parameters and factors are essential to gain a comprehensive understanding of the photosynthesis process.