Table 1 Effect of drought stress on the content of photosynthetic pigments of ‘Jizhen-2’ and ‘ZC9-3’

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