|  | Booting | Leaf | Filling | Leaf | Grain |
---|---|---|---|---|---|---|
Stem | Stem | |||||
GSH(mg·kg−1) | –S | 216.3 ± 17.1a | 212.7 ± 4.7b | 214.9 ± 17.0a | 343.6 ± 7.3a | 223.8 ± 7.1a |
 + S | 185.2 ± 8.6b | 316.5 ± 22.1a | 194.4 ± 3.8a | 295.4 ± 18.5b | 206.4 ± 7.8b | |
Cys (mg·kg−1) | –S | 310.8 ± 21.2a | 630.2 ± 22.3b | 396.9 ± 19.6a | 1081.1 ± 41.3a | 277.8 ± 26.8b |
 + S | 286.1 ± 4.5a | 934.2 ± 62.8a | 446.9 ± 32.4a | 983.5 ± 5.6b | 395.5 ± 19.4a | |
Difference of indexes among two growth stages | ||||||
 GSH | –S | ns | ** |  |  |  |
 + S | ns | ns |  |  |  | |
 Cys | –S | ** | ** |  |  |  |
 + S | ** | ns |  |  |  |