[Changes of photosynthetic characteristics of strawberry leaf under shading].
Studies on the photosynthetic characteristics of two strawberry varieties (Baojiaozaosheng and Shuofeng) under shading showed that the photosynthesis rate decreased by 20% and 47%, when the apparent quantum efficiency increased by 13% and 8%, respectively. The chlorophyll content was enhanced slightly, while the insoluble protein content in leaf decreased drastically. The results also showed that the PSII activity decreased by 22.5% and 53.7%, and the activity of Rubisco, the key enzyme of Calvin cycle, decreased by 19.6% and 35.5%, respectively. The reason of photosynthesis rate descent in light saturation point was also discussed.
Chi
W
W
Anhui Agricultural University, Hefei 230036.
Wang
R
R
Zhang
C
C
D008027:Light; D010788:Photosynthesis / Q000528:radiation effects*; D018515:Plant Leaves / Q000502:physiology / Q000528:radiation effects*; D011829:Radiation Dosage; D027824:Rosaceae / Q000502:physiology*