Fig. 1
Representative images of Brassica rapa var. chinensis grown for 42 days under different light conditions: A natural light (control); B 75 µmol m−2 s−1 light intensity and 12:12 h (light:dark) photoperiod; C 150 µmol m−2 s−1 light intensity and 12:12 h (light:dark) photoperiod; D 75 µmol m−2 s−1 light intensity and 6:6:6:6 h (light:dark:light:dark) photoperiod; E 150 µmol m−2 s−1 light intensity and 6:6:6:6 h (light:dark:light:dark) photoperiod; and F blue; G magenta; and H red spectrums. Scale bar = 5 cm