Fig. 2. Distribution of factor scores of T1, T2, T3, and T4 on the light quality and physiological variables, B:R, W, ΔT, Ci, E, Pn and Φ of Epilobium hirsutum by factor analysis with varimax rotation method. T1, T2, and T3 mean the irradiation time ratios of red + blue mixed light are 1:1, 1:1/2, and 1:1/5 respectively, and T4 mean the red + blue + white mixed light, the irradiation time is 1:1:1. The arrows mean factor loadings of each variable on the factor 1 and factor 2. B:R: amount of blue light per red light; W: amount of white light per red light; ΔT: difference between leaf and air temperatures; Ci: intercellular CO2 pressure; E: transpiration rate; Pn: net photosynthetic rate; Φ: photosynthetic quantum efficiency on the incident light.
© J Ecol Environ
