Using potted Epimedium sagittatum seedings as materials,the physiological and biochemical responses with three shading ratio of 70％,85％and 90％were analyzed.The results showed as follows:(1)There was significant influence of shading on chlorophyll a content,chlorophyll b content,chlorophyll a+b content and chlorophyll a/b value of E.sagittatum.The mean chlorophyll a content,mean chlorophyll b content,and mean chlorophyll a+b content of all measure time increased with the increase of shading ratio.However,treatment of 85％shading ratio possessed the lowest chlorophyll a/b value.(2)At the later stage of the shading experiment,the activity of leaf protective enzymes as POD and SOD and MDA content were relatively lower under the treatment of 85％shading ratio.
Epimedium sagittatumshadingphysiological and biochemical characteristiceffect
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