Table 1.

Effect of drought stress on the content of photosynthetic pigments of ‘Jizhen-2’ and ‘ZC9-3’

Photosynthetic pigment content (mg·g− 1)	Jizhen-2		Percent difference (%)	ZC9-3		Percent difference (%)
	CK	D		CK	D
Chl a	1.80 ± 0.03 b	2.07 ± 0.06 a	15.36	1.41 ± 0.02 c	1.84 ± 0.04 b	30.65
Chl b	0.63 ± 0.03 b	0.81 ± 0.03 a	29.50	0.48 ± 0.03 c	0.66 ± 0.02 b	37.01
Chl t	2.42 ± 0.05 b	2.89 ± 0.08 a	19.01	1.89 ± 0.03 c	2.50 ± 0.06 b	32.29
Car	0.34 ± 0.01 b	0.37 ± 0.02 a	8.43	0.25 ± 0.01 c	0.37 ± 0.01 a	47.47

Note: in this table, Chl a, Chl b, Chl t, and Car indicate chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids, respectively. Data are presented as the mean values ± SDs of three biological replicates. Different lowercase letters within a column indicate significant differences at P ≤ 0.05 according to Duncan’s tests; the same applies to subsequent tables