Seasonal variation of microelement contents in leaves of Cyclocarea paliurus among the provenances  

作　　者：FANG Sheng-zuo CHU Xiu-li SHANG Xu-lan YANG Wan-xia FU Xiang-xiang SHE Cheng-qi 

机构地区：[1]College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, P. R. China

出　　处：《Journal of Forestry Research》2011年第2期225-231,共7页林业研究（英文版）

基　　金：supported by the National Forestry Public Welfare Research Project of China (No. 200904046);the program for the Excellent Innovative Research Team in University of Ji-angsu Province and the National Natural Science Foundation of China(No. 30371156)

摘　　要：Cyclocarya paliurus as a multiple function plant can accumulate biologically important microelement elements.To reveal the variation of selected microelement concentrations in leaves of C.paliurus provenances during the growing season,12 C.paliurus provenances in the field trial were sampled five times at approximately 1-month intervals.The method of inductively coupled plasma optical emission spectrometer（ICP-OES） was employed to determinate average concentrations of Fe,Mn,Zn,Cu and Se in leaves of 12 C.paliurus provenances.The results show that on average,the concentrations of five microelement in the leaves follows an order of Fe Mn Zn Cu Se.Variance analysis shows that there are significant differences in Fe,Mn and Zn concentrations among the twelve provenances（p0.05）,while there is no significant difference between Cu and Se concentrations.A significant difference was also observed in the concentrations of five microelements at the different sampling times（p0.001）,but the mean concentrations for each microelement showed different temporal dynamic patterns.Meanwhile,a significant correlation between concentrations of Se and other measured microelements was detected in the leaves of C.paliurus,except for Mn.Obtained results not only demonstrated that leaves of C.paliurus exhibited higher levels of microelements（Fe,Mn,Cu,Zn and Se）,but also provided a basis for breeding strategies of superior provenances with rich content of microelements,and choosing optimum harvesting time for food industry in future.Cyclocarya paliurus as a multiple function plant can accumulate biologically important microelement elements.To reveal the variation of selected microelement concentrations in leaves of C.paliurus provenances during the growing season,12 C.paliurus provenances in the field trial were sampled five times at approximately 1-month intervals.The method of inductively coupled plasma optical emission spectrometer（ICP-OES） was employed to determinate average concentrations of Fe,Mn,Zn,Cu and Se in leaves of 12 C.paliurus provenances.The results show that on average,the concentrations of five microelement in the leaves follows an order of Fe Mn Zn Cu Se.Variance analysis shows that there are significant differences in Fe,Mn and Zn concentrations among the twelve provenances（p0.05）,while there is no significant difference between Cu and Se concentrations.A significant difference was also observed in the concentrations of five microelements at the different sampling times（p0.001）,but the mean concentrations for each microelement showed different temporal dynamic patterns.Meanwhile,a significant correlation between concentrations of Se and other measured microelements was detected in the leaves of C.paliurus,except for Mn.Obtained results not only demonstrated that leaves of C.paliurus exhibited higher levels of microelements（Fe,Mn,Cu,Zn and Se）,but also provided a basis for breeding strategies of superior provenances with rich content of microelements,and choosing optimum harvesting time for food industry in future.

关 键 词：Cyclocarea paliurus mineral nutrition PROVENANCE concentration ICP-OES（coupled plasma optical emission spectrometer） 

分 类 号：S792.120.1[农业科学—林木遗传育种] TU241[农业科学—林学]