干旱胁迫下春玉米七叶期光合特性及其响应机理

唐玉瑞, 齐月, 王鹤龄, 杨阳, 赵鸿, 张凯, 魏星星, 王仁奎

Photosynthetic characteristics and response mechanism of spring maize at seven-leaf stage under drought stress

TANG Yurui, QI Yue, WANG Heling, YANG Yang, ZHAO Hong, ZHANG Kai, WEI Xingxing, WANG Renkui

表3 CK处理和不同干旱胁迫下春玉米叶片气孔导度对光的响应参数

Tab.3 The light-response parameters of stomatal conductance of spring maize leaves under CK treatment and different drought stress conditions

不同处理	α₂/×10^-4	β₂/×10^-4	γ₂/×10^-2	G_s-max/（mol·m^-2·s^-1）	G_s-_I_sat/（μmol·m^-2·s^-1）
CK	3.97±0.70^a	1.60±0.26^a	0.04±0.02^c	0.28±0.02 ^a	2 186.67±87.62 ^b
T1	4.59±1.67^a	0.71±0.54^a	0.22±0.12^b	0.22±0.01 ^b	2 710.00±145.45 ^a
T2	1.38±0.54^b	1.01±0.50^a	0.22±0.09^b	0.05±0.01 ^c	1 859.99±98.49 ^c
T3	0.07±0.06^c	-0.76±1.12^a	2.79±2.51^a	0.02±0.01 ^d