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2 不同处理条件下美洲黑杨与青杨叶和根谷氨酸脱氢酶与谷氨酰胺合成酶活性(平均值±标准误)

Table 2 Glutamate dehydrogenase (GDH) and glutamine synthase (GS) activity of leaf and root in both Populus deltoides and P. cathayana under different treatments (mean ± SE)

处理 Treatment	谷氨酸脱氢酶 GDH (U)		谷氨酰胺合成酶 GS (U)
	叶 Leaf	根 Root	叶 Leaf	根 Root
美洲黑杨 P. deltoides
对照 Control (CK)	202.1 ± 25.3^cd	63.7 ± 7.7^b	7.5 ± 1.7^a	5.3 ± 0.5
去叶 Defoliation (D)	111.6 ± 26.2^de	82.6 ± 4.9^b	9.5 ± 1.6^a	4.6 ± 0.4
盐胁迫 Salt stress (Sa)	411.9 ± 40.6^b	129.3 ± 9.3^a	11.3 ± 1.8^a	4.6 ± 0.4
盐胁迫与去叶 Salt stress and Defoliation (Sa-D)	685.1 ± 22.6^a	49.2 ± 9.4^b	13.7 ± 1.5^a	3.8 ± 0.2
青杨 P. cathayana
CK	114.6 ± 15.2^de	73.5 ± 7.1^b	7.2 ± 0.9^a	3.5 ± 0.3
D	58.3 ± 12.6^e	85.7 ± 9.1^b	7.9 ± 0.9^a	3.7 ± 0.9
Sa	248.8 ± 36.7^c	78.4 ± 11.4^b	4.1 ± 0.5^a	3.5 ± 0.2
Sa-D	248.1 ± 28.1^c	78.2 ± 11.2^b	5.8 ± 0.9^a	3.8 ± 0.2
p
物种 Spices (Sp)	<0.001	0.726	<0.001	0.004
D	0.114	0.063	0.078	0.491
Sa	<0.001	0.253	0.454	0.242
Sp × D	0.004	0.007	0.582	0.136
Sp × Sa	<0.001	0.181	0.001	0.216
D × Sa	<0.001	<0.001	0.736	0.920
Sp × D × Sa	<0.001	0.002	0.880	0.888