[Objective] The aim was to explore the dynamic change laws of chlorophyll fluorescence parameters in different parts of leaves of Ginkgo biloba.[Method] The *** cultivated in North China was used as materials in this ...
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[Objective] The aim was to explore the dynamic change laws of chlorophyll fluorescence parameters in different parts of leaves of Ginkgo biloba.[Method] The *** cultivated in North China was used as materials in this study to explore the law of daily change and ten-day change of the chlorophyll fluorescence parameters of leaves in different parts of leaves.[Result] The daily change of Fm（maximal fluorescence）,Fv（variable fluorescence）,Fv/Fm,Fm/Fo（electron transfer rate）,Fv/Fo（potential activity of PSⅡ）in leaves of *** obviously presented a descending-ascending trend,the lowest value was at 12：00 and the NPQ（non-photochemical quenching）of sunny leaves arrived at the maximum at *** values of Fm,Fv,Fv/Fm,Fm/Fo,Fv/Fo in shade leaves of *** were obviously higher than those in sunny leaves,but the peak value of NPQ of shade leaves presented earlier and higher,suggesting that the shade leaves might have more sensitive hot dissipation *** to sunny leaves,shade leaves had the higher PSⅡ potential activity and inner light energy translation efficiency.[Conclusion] This study had provided theoretical basis for the protection of *** resources.
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