Photosynthetic and Fluorescence Physiological Characteristics of Different AgedPicea mongolica

Wang Fei,Liu Shizeng and Li Delu

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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (28) : 7-10. DOI: 10.11924/j.issn.1000-6850.casb16020005

Photosynthetic and Fluorescence Physiological Characteristics of Different AgedPicea mongolica

  • Wang Fei, Liu Shizeng, Li Delu
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Abstract

The aim was to comparatively analyze the difference among different aged Picea mongolica. Different aged Picea mongolica were used as materials. Li-6400 portable photosynthesis system was used to detect the photoresponse and chlorophyll fluorescence parameters. The results showed that: (1) Pn reduced gradually with the increase of tree age, Pn of 5-year-old tree was the highest, LSP of 10-year-old tree was higher than that of 5- year-old and 20-year-old tree, which meant Pn of 10-year-old tree was the most active, it was the production period of maximum photosynthetic product, in the most exuberant life period; (2) chlorophyll fluorescence parameters of different aged Picea mongolica were not significantly different (P>0.05),ΦPSand ETR reduced with Picea crassifolia age increase,ΦPSⅡ and ETR of 5-year-old tree were the highest.

Key words

Key word:: Picea mongolica; photoresponse; chlorophyll fluorescence

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Wang Fei,Liu Shizeng and Li Delu. Photosynthetic and Fluorescence Physiological Characteristics of Different AgedPicea mongolica. Chinese Agricultural Science Bulletin. 2016, 32(28): 7-10 https://doi.org/10.11924/j.issn.1000-6850.casb16020005

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