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.