Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2007, Vol. 23 ›› Issue (8): 217-217.

Special Issue: 生物技术 农业气象

• 植物生理科学 • Previous Articles     Next Articles

Effects of Drought Stress on Photosynthetic Characteristics of Photinia frasery Dress

Chen Weiyuan ,Cao Jing, Jiang Wei-Bing   

  • Online:2007-08-05 Published:2007-08-05

Abstract: Effects of drought stress on the membrane injury and photosynthetic characteristics in the leaves of Photinia frasery Dress were studied. The results showed the relative water content, chlorophyll and carotonoid contents and net photosynthetic rate (Pn) in leaves of Photinia frasery decreased with aggravation of drought stress, while the content of anthocyanin, Malondialdehyde and the membrane permeability inhanced significantly. Under light drought stress, Pn, stomatal conductance (Gs) and intercellular CO2 concentration (Ci) decreased at the same time, so the photosynthetic inhibition was due to stomatal limitation. Under moderate and severe drought stress, Ci increased with decrease of Pn and Gs,indicating the photosynthetic inhibition resulted from non-stomatal limatation.

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