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2 CK处理和不同干旱胁迫下春玉米叶片瞬时水分利用效率对光的响应参数

Tab.2 The light-response parameters of the instantaneous water use efficiency of spring maize leaves under CK treatment and different drought stress conditions

不同处理	α₁	β₁/×10^-4	γ₁/×10^-2	WUE_max/（μmol·mmol^-1）	WUE_-_I_sat/（μmol·m^-2·s^-1）
CK	0.44±0.05 ^a	0.86±0.15 ^a	2.52±0.24^b	8.23±0.30 ^a	648.83±33.62 ^b
T1	0.15±0.08 ^b	1.06±0.50 ^a	1.25±0.72 ^c	6.79±0.75 ^b	997.15±45.19 ^a
T2	0.26±0.08 ^b	1.07±0.14 ^a	1.84±0.38 ^bc	8.75±0.73 ^a	667.45±11.18 ^b
T3	0.05±0.01 ^c	0.00±0.55^b	4.03±0.51 ^a	0.14±0.19 ^c