## 3 Results
### Inorganic Element Responses under Drought Stress  
Figure 4 demonstrates the box charts of the inorganic element parameters and significant dissimilarities between the control group and stress groups (T0.50, T1.0, and T1.50). The Na and Mg contents revealed significant decreases compared to the control treatment and these characteristics progressively diminished from slight stress (T0.50) to high stress (T1.50). Further, no significant variation in the S content was observed between the four groups. The distribution ranges were largest in Na content. Inorganic elements exhibited substantial variations in all rice genotypes under control and stress conditions (Table 9). Under the control condition, the Red Bazyan genotype obtained the greatest amounts of Mg (3066.46 \(\upmu\)g/g), P (13125.19 \(\upmu\)g/g), S (5473.38 \(\upmu\)g/g), and K (49,711.49 \(\upmu\)g/g). The largest amount of Na (382.13 \(\upmu\)g/g) and Ca (6014.87 \(\upmu\)g/g) was documented in Shawre. At low drought stress (T0.50), Red Bazyan expressed the highest Na (368.89 \(\upmu\)g/g), Mg (3466.10 \(\upmu\)g/g), P (12,101.34 \(\upmu\)g/g), K (45,255.60 \(\upmu\)g/g), and Ca (6507.31 \(\upmu\)g/g). Under moderate stress (T1.00), the maximum quantity of Na (210.28 \(\upmu\)g/g), Mg (2596.67 \(\upmu\)g/g), P (14,121.74 \(\upmu\)g/g), K (48,698.00 \(\upmu\)g/g), and Ca (5083.59 \(\upmu\)g/g) was recorded in Red Bazyan. At high PEG stress (T1.50), Red Bazyan contained the highest contents of Mg (2256.66 \(\upmu\)g/g), P (12,135.20 \(\upmu\)g/g), and K (37,482.84 \(\upmu\)g/g), while the Shawre genotype had the lowest amount of Na (86.48 \(\upmu\)g/g), P (5880.94 \(\upmu\)g/g), S (1764.29 \(\upmu\)g/g), Mg (1180.56 \(\upmu\)g/g), and Ca (1670.19 \(\upmu\)g/g). \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Stress** & **Index** & **Choman** & **Gwll Swr** & **Kalar** & **Red Bazyan** & **Shawre** & **White Bazyan** \\ \hline \multirow{3}{*}{T0.50} & STI & 2.94 & 2.06 & 1.82 & 2.14 & 1.96 & 2.32 \\  & AR & 1.73 & 3.82 & 5.00 & 3.82 & 3.73 & 2.91 \\ \cline{2-8}  & Rank & 1 & 4 & 5 & 4 & 3 & 2 \\ \hline \multirow{3}{*}{T1.00} & STI & 4.13 & 3.03 & 2.42 & 3.07 & 3.15 & 3.03 \\  & AR & 1.82 & 3.64 & 5.18 & 3.82 & 2.82 & 3.73 \\ \cline{2-8}  & Rank & 1 & 3 & 6 & 5 & 2 & 4 \\ \hline \multirow{3}{*}{T1.50} & STI & 5.41 & 4.35 & 4.07 & 4.12 & 4.28 & 4.38 \\  & AR & 1.91 & 3.82 & 4.36 & 4.45 & 3.18 & 3.27 \\ \cline{2-8}  & Rank & 1 & 4 & 5 & 6 & 2 & 3 \\ \hline Overall & Sum of Ranks & 3 & 11 & 16 & 15 & 7 & 9 \\ \hline \multicolumn{8}{c}{Overall Rank} & 1 & 4 & 6 & 5 & 2 & 3 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Rank of rice genotypes determined by the stress tolerance index (STI) and the average number of ranks (ASRs) dependent on biochemical characteristics under stress conditions. Genotypes with the highest STI and lowest ASR values were considered to be the best genotypes and the lowest rank was given to the best performance of each genotype. Figure 4: Box charts of inorganic elements of the kernel-derived calli from six rice genotypes, indicating wide differences between control and stress conditions. (**A**): Na, (**B**): Mg, (**C**): P, (**D**): S, (**E**): K, and (**F**): Ca. The numbers given are the mean values determined for the six measurements obtained for control (T0.00), and PEG concentrations (T0.5, T1.00, and T1.50). The different letters indicate a significant variation between the mean values of each trait by [PERSON]’s multiple-range analysis (\(p\leq 0.05\)). A blue dot in the box represents the mean value. Red dots denote the minimum and maximum values, while extreme values (outliers) are shown as dots outside the whiskers.