Chlorophyll fluorescence characteristics of two strains of Porphyra haitanensis T.J. Chang & B.F. Zheng

摘要

Two strains of Porphyra haitanensis T.J. Chang and B.F. Zheng were used to study the chlorophyll fluorescence characteristics. Results showed that the Platt model can fit the rapid light curve of P. haitanensis (R 2 0.95). The α of the first harvest laver was higher than that of the second, third, and fourth harvest laver. The rETRmax and I k of the two strains of P. haitanensis reached the highest at the time of the second harvest ( P 0.01). The α, rETRmax and I k of the basal parts were higher than that of the top parts of the two strains of P. haitanensis ( P 0.05). The α was minimal under the combined red and blue light, red light and blue light showed antagonistic effect on α . Whereas the I k , rETR max was minimal under red light. The α and rETRmax reached their maximum under the blue light, the combined red and blue light the I k was the highest.