Table 1 Chlorophyll content of Brassica rapa var. chinensis leaves under varying light intensities, photoperiods, and light spectrums

17.17 ± 1.40^a,e

5.50 ± 0.69^a

22.68 ± 2.09^a

11.34 ± 1.04^a

23.72 ± 0.99^b

8.83 ± 0.53^b

32.55 ± 1.46^b

16.28 ± 0.73^b

23.09 ± 1.17^b,c

8.31 ± 0.59^b

31.40 ± 1.76^b

15.70 ± 0.88^b

22.10 ± 0.30^b,c,d

7.40 ± 0.31^b,c,d

29.60 ± 0.60^b,c

14.75 ± 0.30^b,c

22.52 ± 0.32^b,c,d

7.52 ± 0.09^b,c

30.04 ± 0.34^b,c

15.02 ± 0.17^b,c

20.15 ± 1.93^c,d,e

6.36 ± 0.93^a,c,d

26.51 ± 2.86^a,c

13.26 ± 1.43^a,c

16.32 ± 0.09^a

5.97 ± 0.04^a,d

22.16 ± 0.14^a

11.08 ± 0.07^a

19.86 ± 1.23^d,e

6.66 ± 0.49^a,c,d

25.58 ± 1.71^a,c

12.79 ± 0.86^a,c