Table 3.

Leaf chlorophyll pigments, carotenoid contents, and anthocyanin contents of four soybean cultivars grown under drought and salinity stress conditions. Data presented are means ± SD, and different letters denote a significant difference at p < 0.05 based on the least significant difference (LSD) test.

Cultivars	Treatments	Chl a (mg g−1 FW)	Chl b(mg g−1 FW)	Total Chl (mg g−1 FW)	Carotenoid (mg g−1 FW)	Anthocyanin (μg g−1 FW)
PI31	Control	1.414 ± 0.67 a	5.278 ± 0.16 a	6.692 ± 1.09 a	1.283 ± 0.16 a	71.490 ± 1.9 a
	Drought	0.816 ± 0.015 a	3.202 ± a 0.18 a	4.018 ± 1.21 a	0.476 ± 0.05 a	55.385 ± 4.46 a
	Salinity	0.774 ± 0.02 a	2.964 ± 0.2 a	3.738 ± 0.72 a	0.475 ± 0.22 a	56.956 ± 1.87 a
	Drought + Salinity	0.449 ± 0.04 a	1.982 ± 0.19 a	2.431 ± 0.12 a	0.451 ± 0.34 a	48.267 ± 3.24 a
PI37	Control	1.388 ± 0.88 a	5.149 ± 0. 10 a	6.537 ± 0.43 a	0.944 ± 0.27a	76.596 ± 1.12 a
	Drought	0.625± 0.03 a	2.380 ± 0.09 bc	3.005 ± 0.64 b	0.2887 ± 0.18 ab	57.676 ± 1.33 a
	Salinity	0.475 ± 0.01 b	2.231± 0.36 b	2.706± 0.57c	0.256 ± 0.45 b	42.815 ± 4.48 b
	Drought + Salinity	0.231± 0.07 b	1.728 ± 0.17 ab	1.959 ± 0.54c	0.174 ± 0.33 bc	32.144 ± 4.67 b
PI90	Control	1.437 ± 0.44 a	4.994 ± 0.14 a	6.431 ± 1.13 a	1.0172 ± 1.11a	78.691 ± 2.85 a
	Drought	0.316 ± 0.06 b	2.771 ± 0.28 ab	3.087 ± 0.74 a	0.337 ± 0.55 ab	52.544 ± 0.79 ab
	Salinity	0.251 ± 0.08 c	2.883 ± 0.19 a	3.134 ± 0.22 b	0.423 ± 0.13 ab	51.784 ± 2.74 ab
	Drought + Salinity	0.114 ± 0.03 b	1.922 ± 0.11 a	2.063 ± 0.29 b	0.272 ± 0.65 b	42.750 ± 3.53 ab
PI5A	Control	1.388 ± 0.055a	4.902 ± 0.29 a	6.29 ± 1.08 b	0.967 ± 0.88 a	80.262 ± 6.17 a
	Drought	0.215± 0.03b	2.225 ± 0.15 c	2.44 ± 0.98b	0.181 ± 0.57 b	46.94 ± 3.88 b
	Salinity	0.233 ± 0.21c	2.356 ± 0.17 b	2.589 ± 0.65c	0.254 ± 0.14 b	50.082 ± 5.57 ab
	Drought + Salinity	0.158 ±0.14 b	1.421 ± 0.12 b	1.579 ± 0.54ab	0.1284 ± 0.44 c	30.311 ± 0.74 b