Table 4. Effects of seeding dates on the amino acid profile of whole-crop barley cultivated otherwise stated)
Items | Treatments1) |
T1 | T2 | T3 | T4 | T5 |
Threonine | 268 ± 14ns | 260 ± 10 | 269 ± 6 | 272 ± 2 | 262 ± 8 |
Valine | 460 ± 26ns | 458 ± 12 | 482 ± 4 | 504 ± 43 | 518 ± 15 |
Methionine | 34 ± 1ns | 33 ± 1 | 35 ± 3 | 33 ± 3 | 39 ± 3 |
Isoleucine | 298 ± 15ns | 291 ± 9 | 312 ± 5 | 310 ± 8 | 304 ± 11 |
Leucine | 504 ± 25ns | 490 ± 10 | 511 ± 3 | 508 ± 3 | 482 ± 4 |
Phenylalanine | 450 ± 6ns | 478 ± 12 | 490 ± 7 | 489 ± 14 | 476 ± 30 |
Histidine | 218 ± 2ns | 226 ± 6 | 238 ± 2 | 248 ± 3 | 254 ± 30 |
Lysine | 406 ± 26ns | 410 ± 11 | 428 ± 7 | 428 ± 8 | 397 ± 12 |
Arginine | 305 ± 11ns | 307 ± 5 | 332 ± 4 | 326 ± 11 | 331 ± 20 |
Sum of EAA | 2,943 ± 127ns | 2,953 ± 31 | 3,097 ± 23 | 3,118 ± 84 | 3,063 ± 39 |
Serine | 270 ± 9ns | 278 ± 7 | 292 ± 4 | 296 ± 24 | 285 ± 26 |
Glutamic acid | 1,086 ± 27ns | 1,055 ± 53 | 1,065 ± 55 | 1,117 ± 34 | 1,076 ± 21 |
Proline | 1,035 ± 4ns | 924 ± 98 | 1,138 ± 29 | 1,148 ± 7 | 1,140 ± 41 |
Glycine | 299 ± 10ns | 293 ± 8 | 306 ± 6 | 304 ± 4 | 289 ± 11 |
Alanine | 339 ± 31ns | 406 ± 16 | 425 ± 6 | 423 ± 6 | 408 ± 5 |
Tyrosine | 97 ± 7ns | 94 ± 2 | 102 ± 1 | 101 ± 1 | 107 ± 5 |
Aspartic acid | 997 ± 34ns | 1,115 ± 48 | 1,177 ± 6 | 1,171 ± 61 | 1,381 ± 24 |
Sum of NEAA | 4,123 ± 101c | 4,315 ± 41b | 4,505 ± 13a | 4,560 ± 52a | 4,686 ± 96a |
Total amino acids | 7,066 ± 26b | 7,268 ± 11b | 7,602 ± 27a | 7,678 ± 136a | 7,747 ± 135a |
Data are expressed as means ± SD.
Means in a row with different superscripts are significantly different (p < 0.05).
T1, T2, T3, T4, and T5 represent the different seeding dates: October 19, October 26, November 2, November 9, and November 16, respectively. ns, not significant; EAA, essential amino acids; NEAA, non-essential amino acids.