Table 2.
Positional variations in the concentrations of K, Mg, Na, Ca, Zn, Fe, Mn, and Cu in six different rice cultivars
| Cultivar | Grain position | Concentration (μg/g) |
|||||||
| K | Mg | Na | Ca | Zn | Fe | Mn | Cu | ||
| 98110 | TPR | 1627a | 1518a | 260.6a | 263.7a | 25.28a | 10.27a | 24.82bc | 2.780a |
| TSR | 1568b | 1453ab | 219.8ab | 256.5b | 24.58b | 9.57c | 24.20c | 2.471b | |
| MPR | 1468c | 1398b | 203.3bc | 253.9bc | 24.55b | 9.89b | 26.08a | 2.425b | |
| MSR | 1396d | 1315c | 191.7bcd | 250.7bc | 24.07c | 9.31d | 26.03a | 2.273b | |
| BPR | 1440cd | 1378bc | 170.4cd | 247.8cd | 23.48d | 8.96e | 25.19b | 1.866c | |
| BSR | 1314e | 1324c | 156.3d | 242.3d | 22.78e | 8.59f | 24.63c | 1.671c | |
| Mean | 1469 | 1398 | 200.4 | 252.5 | 24.12 | 9.43 | 25.16 | 2.248 | |
| CV | 7.76% | 5.56% | 18.57% | 2.93% | 3.69% | 6.49% | 3.04% | 18.28% | |
| HIPj | TPR | 1862a | 1704a | 265.6a | 282.1a | 26.76a | 11.93a | 31.62a | 2.815a |
| TSR | 1732b | 1585b | 200.5cde | 269.4b | 25.97b | 10.90c | 28.78b | 2.567bc | |
| MPR | 1583c | 1440c | 241.7ab | 267.7b | 25.83b | 11.33b | 27.52c | 2.688ab | |
| MSR | 1285e | 1321d | 215.1bc | 263.8c | 25.29c | 10.92c | 25.55c | 2.459cd | |
| BPR | 1536d | 1389c | 192.6de | 257.6d | 24.75d | 10.42d | 26.81c | 2.302d | |
| BSR | 1328e | 1329d | 184.1e | 253.1e | 24.38d | 9.88e | 25.07d | 2.022e | |
| Mean | 1554 | 1461 | 216.6 | 265.6 | 25.50 | 10.90 | 27.56 | 2.476 | |
| CV | 14.43% | 10.47% | 14.49% | 3.83% | 3.41% | 6.53% | 8.71% | 11.49% | |
| Xiushui63 | TPR | 1836a | 1757a | 312.2a | 290.1a | 22.87a | 9.68a | 46.83a | 2.505a |
| TSR | 1790a | 1671ab | 267.7b | 283.2b | 22.50a | 9.42bc | 43.27c | 2.167b | |
| MPR | 1802a | 1655b | 275.8b | 281.8b | 21.99b | 9.33cd | 45.03b | 2.225b | |
| MSR | 1570b | 1415c | 249.9bc | 276.9c | 21.28c | 9.16d | 38.87de | 2.168b | |
| BPR | 1737a | 1715ab | 209.7c | 270.3d | 20.88cd | 8.70e | 42.87c | 2.010b | |
| BSR | 1498b | 1429c | 191.9c | 262.4e | 20.44d | 8.40f | 38.73e | 1.643c | |
| Mean | 1706 | 1607 | 251.2 | 277.5 | 21.66 | 9.11 | 42.60 | 2.120 | |
| CV | 8.12% | 9.19% | 17.66% | 3.57% | 4.39% | 5.25% | 7.66% | 13.40% | |
| Xiushui994 | TPR | 1655a | 1359a | 312.2a | 304.2a | 20.84a | 10.81a | 36.88a | 3.270a |
| TSR | 1587ab | 1297ab | 239.1b | 296.1b | 20.46ab | 10.18b | 32.36c | 2.908b | |
| MPR | 1492b | 1305ab | 218.4b | 292.3c | 19.89ab | 10.23b | 33.81b | 2.868b | |
| MSR | 1571ab | 1245b | 202.2bc | 287.4d | 19.75ab | 9.76c | 32.52c | 2.673bc | |
| BPR | 1514b | 1291ab | 167.6cd | 282.7e | 19.21b | 9.17d | 32.98c | 2.442cd | |
| BSR | 1465b | 1225b | 150.6d | 276.1f | 18.79b | 8.96e | 30.29d | 2.198d | |
| Mean | 1547 | 1287 | 215.0 | 289.8 | 19.82 | 9.85 | 33.14 | 2.727 | |
| CV | 4.54% | 3.68% | 26.80% | 3.44% | 3.84% | 7.09% | 6.55% | 13.84% | |
| Chunjiang15 | TPR | 1571a | 1456a | 228.9a | 254.0a | 24.81a | 9.72a | 34.02a | 3.208a |
| TSR | 1308bc | 1339b | 179.9bc | 247.8b | 22.40b | 9.26b | 32.30b | 2.975b | |
| MPR | 1395b | 1310bc | 202.0abc | 247.0b | 21.55c | 9.14b | 31.93b | 2.832b | |
| MSR | 1336bc | 1250c | 218.7ab | 240.2cd | 22.40b | 8.81c | 31.22bc | 2.870b | |
| BPR | 1278c | 1274bc | 187.0abc | 236.9d | 21.26c | 8.40d | 30.84c | 2.603c | |
| BSR | 1285c | 1375b | 174.9c | 231.6e | 20.45d | 8.18e | 30.18c | 2.525c | |
| Mean | 1362 | 1334 | 198.7 | 242.9 | 22.15 | 8.92 | 31.75 | 2.836 | |
| CV | 8.13% | 5.59% | 10.99% | 3.37% | 6.77% | 6.41% | 4.24% | 8.78% | |
| Xiushui11 | TPR | 1527a | 1458a | 273.8a | 229.6a | 24.48a | 11.71a | 30.58a | 2.868a |
| TSR | 1347bc | 1343a | 228.2b | 223.9b | 23.74a | 11.42b | 26.95b | 2.672b | |
| MPR | 1421ab | 1333a | 228.9b | 218.8cd | 24.04a | 11.20c | 25.15bc | 2.568c | |
| MSR | 1345bc | 1365a | 216.1bc | 214.6d | 23.49a | 10.86d | 24.30c | 2.458d | |
| BPR | 1276c | 1368a | 206.0bc | 209.5e | 22.33b | 10.34e | 24.06c | 2.283e | |
| BSR | 1098d | 864b | 191.5c | 203.2f | 21.92b | 10.08f | 22.65d | 2.132f | |
| Mean | 1336 | 1289 | 224.1 | 216.6 | 23.33 | 10.94 | 25.62 | 2.497 | |
| CV | 10.81% | 16.50% | 12.57% | 4.43% | 4.29% | 5.78% | 10.99% | 10.65% | |
TPR: top primary rachis; TSR: top secondary rachis; MPR: middle primary rachis; MSR: middle secondary rachis; BPR: bottom primary rachis; BSR: bottom secondary rachis; CV: coefficient of variation. The values followed by the same letters within a column are not significantly different in term of the same cultivar (P>0.05)