Abstract: The light-energy conversion characteristics of Gingko chloroplast in nature condition were investigated. The results showed that: photosynthetic rate and chlorophyll content of Gingko increased as leaf spreading. The content of ATP increased with the activity of photophorylation, keeping low content after germination, and having the maximum content of ATP after 65 days as leaves growing; Mg²⁺,Ca²⁺ATPase activity changed from high level to low after germination, and reached the lowest level after 50 days as leaves growing, then its activity ascend sluggishly. The results also showed that all lightenergy conversion characteristics had the similar change in male and female.

Key words: Gingko, Chloroplast, light-energy conversion characteristics, photophorylation