## 3 Results and Discussion
### Macromineral Concentrations of Yellow-Fleshed Cassava Roots by Genotype
Although the highest Mg content was recorded in genotype 01/1417 (1679.7 mg/kg), its concentration was found to be the lowest in genotypes 01/1231 (753.7 mg/kg) and 01/1172 (721.7 mg/kg) from all the genotypes examined. The highest levels of Na content were recorded in genotype 01/1417 (73.9 mg/kg). The study revealed that the levels of K content in genotype 01/1206 (23,000 mg/kg) were higher than the rest of the genotypes. However, genotype 99/7558 (12,680 mg/kg) had the lowest levels of all the genotypes examined. For P, the study showed the highest concentration in the Z97/0474 (12,680 mg/kg) genotype of all the samples examined. However, genotypes 99/7558 (760 mg/kg) and 01/1296 (763.7 mg/kg) had the lowest levels of P content of all the genotypes. Genotype Z97/0474 (358 mg/kg) showed the highest levels of S content of all the samples studied. From the results above, all the genotypes with significantly higher mineral concentrations than the check genotypes could be recommended for breeding purposes. However, genotypes with no significant difference or significantly lower mineral concentrations than the check genotypes could not be recommended for such purposes as breeding. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Genotype**} & \multirow{2}{*}{**Ca**} & \multirow{2}{*}{**Mg**} & \multirow{2}{*}{**Na**} & \multirow{2}{*}{**K**} & \multirow{2}{*}{**P**} & \multirow{2}{*}{**S**} \\ \cline{2-2} \cline{6-7}  & & & & & & \\ \hline 01/1662 & 1369.3 cd & 1081.7 defg & 61.0 fg & 20,160.0 a & 1791.7 ab & 308.7 cdef \\
01/1115 & 1090.0 defgh & 1441.3 bc & 316.9 cdefg & 11,383.3 defg & 1139.0 eigh & 310.7 cdef \\
01/1224 & 2033.0 a & 936.0 efgh & 119.3 eg & 11,050.0 eigh & 989.7 gh & 351.3 bc \\
01/1235 & 967.7 efghi & 1551.7 b & 66.9 fg & 11,806.7 def & 1275.7 cdefg & 326.7 cde \\
01/1273 & 1423.3 bcd & 1167.7 cdef & 116.8 eg & 16,590.0 b & 1617.3 abc & 275.8 fg \\
01/1277 & 1250.3 defg & 1237.7 cde & 658.4 ab & 10,783.3 efghi & 1410.0 bcdef & 199.8 ij \\
01/1331 & 1128.0 defgh & 1026.7 eg & 200.0 cdefg & 14,720.0 bc & 1292.3 cdefg & 270.0 fgh \\
01/1335 & 1309.0 cde & 878.3 fgh & 446.6 abcd & 14,796.7 bc & 1993.7 a & 426.7 a \\
01/1368 & 830.0 hij & 1410.7 bc & 676.2 a & 8693.3 ghi & 996.3 gh & 282.7 efg \\
01/1371 & 1424.3 bcd & 1342.0 bcd & 403.9 abcde & 12,290.0 cdef & 813.3 h & 311.3 cdef \\
01/1412 & 1742.3 ab & 1401.0 bc & 131.9 eg & 12,636.7 cde & 807.7 h & 289.9 ef \\
01/1413 & 1303.3 cdef & 930.0 fghgh & 77.7 fg & 12,303.3 cdef & 847.7 h & 300.3 cdef \\
01/1442 & 939.0 ghij & 1047.0 defg & 256.7 cdefg & 10,556.7 efghi & 801.0 h & 272.7 fg \\
01/1610 & 1005.3 efghi & 1941.0 a & 356.8 bcdef & 11,543.3 defg & 1252.7 cdefg & 302.7 cdef \\
01/1646 & 1153.0 defghi & 1347.7 bcd & 61.3 fg & 12,743.3 cde & 1188.7 defgh & 271.3 fgh \\
01/1649 & 870.0 hij & 889.0 fgh & 64.8 fg & 13,930.0 bcd & 1070.0 fgh & 312.0 cdef \\
01/1663 & 947.3 fghij & 1588.3 b & 83.6 fg & 12,966.7 cde & 1152.0 efgh & 377.3 b \\
90/01554 & 1629.3 bc & 1418.7 bc & 650.5 ab & 9586.7 fghi & 1317.7 cdefg & 264.2 fgh \\
94/0006 & 708.7 ji & 1028.0 eg & 68.6 fg & 12,736.7 cde & 1563.7 bcd & 351.7 bc \\
94/0330 & 1139.0 defgh & 1419.0 bc & 44.0 g & 8206.7 i & 1298.7 cdefg & 222.8 hij \\
95/0379 & 827.0 hij & 1137.7 cdef & 72.5 fg & 11,806.7 cdef & 1125.3 efgh & 238.3 ghi \\
98/2132 & 883.3 hij & 1004.3 eghi & 146.8 defg & 11,513.3 a defg & 1503.3 bc & 273.7 fg \\ TME1(check) & 596.3 j & 776.7 gh & 68.9 fg & 8323.3 h & 1495.0 bcde & 204.2 ij \\
91/02324(check) & 1096.0 defgh & 715.7 h & 459.0 abc & 11,146.7 defg & 1082.0 fgh & 342.3 bcd \\
30,572(check) & 1076.3 defgh & 893.7 fgh & 97.1 eg & 10,626.7 efghi & 1002.0 gh & 184.6 j \\ \hline \hline \end{tabular} Mean values in the same column with the different letters are significantly different at \(p<0.05\). Parameters were analyzed in duplicate and expressed in mg/kg.  
\end{table} 
Table 4: Means of the macromineral concentrations of yellow cassava roots (trial Set 1) by genotype.