Physiological and comparative proteomic analysis provides new insights into the effects of shade stress in maize (Zea mays L.)

Table 2 Photosynthetic gas exchange parameters in functional leaf under different light intensities after tasseling in 2015 and 2016

Year	Stage	Treatment	P_n	T_r	g_s	C_i
2015	VT	CK	45.2	6.8	523.2	135.2
	VT20	S	10.7b	1.0b	74.1c	123.5a
		CK	34.2a	4.4a	245.7b	113.3b
		L	34.6a	4.3a	286.7a	98.0c
	VT40	S	6.3c	0.8b	55.7c	170.3a
		CK	18.7b	2.7a	156.3b	158.0b
		L	20.2a	3.1a	201.3a	146.3c
2016	VT	CK	42. 8	7.4	542.1	149.2
	VT20	S	20.1b	2.3b	93.8b	121.5b
		CK	32.0a	5.4a	280.1ab	108.3b
		L	33.7a	6.1a	319.2a	94.2a
	VT40	S	7.2c	1.1b	51.5b	165.8a
		CK	22.0b	2.1a	171.3a	148.5b
		L	23.7a	2.4a	187.0a	149.2b

S: 60% shade; L: supplementary lighting on cloudy daylight; CK: ambient sunlight; VT: Tasseling stage; VT20: 20 d after tasseling; VT40: 40 d after tasseling; P_n: Photosynthetic rate; T_r: Transpiration rate; g_s: Stomatal conductance; C_i: Intercellular CO₂ concentration. Values fallowed by a different small letter within a column are significantly different at 5% probability level

ISSN: 1471-2229