Chlorophyll fluorescence characteristics of some coniferous and deciduous tree species under different irradiance

Abstract

Abstract: Change characteristics of chlorophyll fluorescence,maximum quantum efficiency (ΦP) and the real quantum efficiency (PhiPSⅡ),and the adaptability of Pinus tabulaeformis,Populus alba cv.pyramidalis,Ulmus pumila,Platycladus orientalis,Hippophae rhamnoides,Fraxinus pennsylvanica and Picea meyeri were studied under different irradiance.The results showed that ΦP and PhiPSⅡ decreased with increasing light intensity.Light course of ΦP and PhiPSⅡ could be expressed with equation y=a+b(1-exp(-kx)),in which x and y represented light intensity and ΦP or PhiPSⅡ,respectively.ΦP showed linear increase with increasing PhiPSⅡ.The maximum quantum efficiency,turning point and minimum quantum efficiency of light course could be used to estimate the photosynthesis quantum efficiency of the tested species and their adaptability to strong light.The photosynthesis quantum efficiency of the tested species according to the maximum PhiPSⅡ decreased in order of Hippophae rhamnoides>Ulmus pumila>Populus alba cv.pyramidalis>Fraxinus pennsylvanica>Pinus tabulaeformis>Picea meyeri>Platycladus orientalis.The adaptation capability to strong light estimated from the light intensity of turning point of ΦP light course and minimum quantum efficiency was in order of Populus alba cv.pyramidalis>Ulmus pumila>Platycladus orientalis>Fraxinus pennsylvanica>Pinus tabulaeformis>Hippophae rhamnoides>Picea meyeri.The results accorded with the ecological characteristics of the tested plants.

Key words: Indian meal moth, Sex pheromone, (Z,E)-9,12-tetradecadienyl acetate, Behavioral response

CLC Number:

Q945.11

HE Yanhong, TIAN Youliang, GUO Liansheng. Chlorophyll fluorescence characteristics of some coniferous and deciduous tree species under different irradiance[J]. cje, 2005, (5): 467-472.

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