核桃营养枝与结果枝叶绿素荧光动力学的特性比较

Comparison of Chlorophyll Fluorescence in Nutrition Branch and Vegetative Branch of Juglans regia L

以7 a生实生核桃树营养枝、结果枝叶片为试验材料,用植物效率仪(Handy PEA)测定其叶绿素荧光动力学参数。结果表明:核桃营养枝和结果枝叶绿素荧光动力学参数存在一定差异。其中Fo、Fm、ABS/CS和TR/CS差异达到显著或极显著水平,Fv、Fv/Fm、Fo/Fm、RC/CS、ET/CS和DI/CS差异不显著。核桃果实生长光合产物的大量消耗导致了叶绿素荧光参数值的降低。

The study aimed to explore the chlorophyll fluorescence in nutrition branch and vegetative branch of Juglans regia L. With leaves of nutrition branch and vegetative branch of seven yea〉old seedling Juglans regia L. , chlorophyll fluorescence parameters were measured by the plant efficiency analysisy（handy PEA）. There were some differences of the parameters chlorophyll fluorescence between the nutrition branch and vegetative branch of Juglans regia L. Which Fo, Fm, ABS/CS, and TR/CS differences reached at significant or highly significant, Fv, Fv/Fm, Fo/Fm, RC/CS, ET/CS, and DI/CS difference were not significant. The chlorophyll fluorescence parameters were decreased because a number of photosynthetic products were consummated to fruit growth of Juglans regia L