非结构性碳水化合物与氮分配对美洲黑杨和青杨耐盐能力的影响

林夏珍, 刘林, 董婷婷, 方琦博, 郭庆学

Effects of non-structural carbohydrate and nitrogen allocation on the ability of Populus deltoides and P. cathayana to resist soil salinity stress

LIN Xia-Zhen, LIU Lin, DONG Ting-Ting, FANG Qi-Bo, GUO Qing-Xue

表1 不同处理条件下美洲黑杨与青杨叶、茎和根中可溶性糖与蔗糖浓度(平均值±标准误)

Table 1 Soluble sugars and sucrose concentration of leaf, stem and root in both Populus deltoides and P. cathayana under different treatments (mean ± SE)

处理 Treatment 可溶性糖 Soluble sugars (mg·g-1) 蔗糖 Sucrose (mg·g-1) 叶 Leaf 茎 Stem 根 Root 叶 Leaf 茎 Stem 根 Root 美洲黑杨 P. deltoides 对照 Control (CK) 134.1 ± 4.4a 71.2 ± 2.2a 51.6 ± 1.3b 75.6 ± 3.9a 27.6 ± 1.9ab 27.6 ± 1.4b 去叶 Defoliation (D) 143.1 ± 4.6a 58.4 ± 1.9bc 33.0 ± 1.3e 73.8 ± 4.3a 26.5 ± 2.6abc 19.3 ± 1.4c 盐胁迫 Salt stress (Sa) 144.9 ± 6.0a 67.2 ± 3.0ab 60.3 ± 1.8a 79.4 ± 5.8a 35.0 ± 4.4a 37.7 ± 3.2a 盐胁迫与去叶 Salt stress and Defoliation (Sa-D) 149.0 ± 2.3a 54.1 ± 1.6c 45.1 ± 1.1bc 75.4 ± 3.9a 25.3 ± 3.2abc 22.0 ± 1.4bc 青杨 P. cathayana CK 144.6 ± 3.4a 59.7 ± 1.8bc 39.4 ± 1.5cd 61.0 ± 2.4ab 27.0 ± 3.3abc 19.4 ± 0.6c D 141.6 ± 1.1a 44.4 ± 1.9d 38.7 ± 2.0cd 47.2 ± 2.8b 17.8 ± 2.0bc 21.2 ± 1.8bc Sa 113.6 ± 5.5b 34.6 ± 1.4e 29.9 ± 3.4e 49.0 ± 8.1b 15.2 ± 1.6bc 14.5 ± 1.2cd Sa-D 113.0 ± 4.2b 31.0 ± 1.1e 18.5 ± 1.2f 44.5 ± 3.4b 14.6 ± 1.2c 11.0 ± 1.4d p 物种 Species (Sp) <0.001 <0.001 <0.001 <0.001 <0.001 <0.001 D 0.432 <0.001 <0.001 0.076 0.012 <0.001 Sa 0.001 <0.001 0.094 0.483 0.264 0.636 Sp × D 0.168 0.216 <0.001 0.352 0.894 <0.001 Sp × Sa <0.001 <0.001 <0.001 0.138 0.010 <0.001 D × Sa 0.833 0.044 0.174 0.598 1.000 0.012 Sp × D × Sa 0.549 0.035 0.010 0.388 0.034 0.676