广西植物2016，Vol.36Issue(12)：1416-1421,1444,7.DOI:10.11931/guihaia.gxzw201605015
四种金花茶组植物叶片金属元素含量及富集特性研究
Enrichment characteristics of metal elements in leaves from four species of yellow flower Camellia
摘要
Abstract
Yellow flower Camellia is one of the world treasure plant resources. In this paper, eleven elements including Mg, Ca, Mn, Fe, Zn, Ni, Se, Pb, Cd, Hg and As were determined in leaves and corresponding soils of four yellow flower Camellia by atomic absorption spectrometry and atomic fluorescence spectrometry, and then the enrichment factors of these metal elements were calculated. The results were as follows:(1) The leaves of four yellow flower Camellia were rich in Mg, Ca, Mn, Fe, Zn, Ni and element contents were Ca>Mg>Mn>Fe>Zn>Ni>Se, while the toxic heavy elements such as Pb, Cd, As and Hg were low, which reached the standards of non-polluted tea. (2) There were obvious differences in metal element contents between young and old leaves. The concentrations of Ca, Mn, Fe, Zn, Pb, Cd, Hg, As and Se in old leaves were higher than those in young leaves, especially in Ca, Mn and Fe, while concentrations of Mg and Ni in young leaves were higher than those in old leaves. (3)Yellow flower Camellia showed different enrichment abilities to differ-ent metal elements. The enrichment factors were Ca, Mn, Mg>Zn, Ni, Hg>Pb, Se>Fe, As. Also, the enrichment char-acteristics were different in young and old leaves. ( 4 ) The enrichment abilities of four yellow flower Camellias were different. Overall, C. longzhouensis and C. murauchii had higher enrichment factors of Mg, Ca, Mn, Zn, Ni, Se and Pb than that of C. nitidissima and C. ptilosperma. In detail, C. longzhouensis and C. murauchii showed the highest enrichment of Mg, Mn, Se and Ca, Pb and Hg, respectively. C. nitidissima showed higher enrichment of Hg and lower enrichment of oth-er elements, while C. ptilosperma had the lowest enrichment factors of Ca, Mn, Ni and Zn. The above results showed that plant species, parts and element type had a comprehensive effect on the enrichment factors. The results provide the informa-tion for reasonable development and utilization of yellow flower Camellia.关键词
金花茶组/嫩叶/老叶/元素分析/富集系数Key words
yellow flower Camellia/young leaves/old leaves/elemental analysis/enrichment factor分类
农业科技引用本文复制引用
秦玉燕,时鹏涛,於艳萍,王运儒,蒋越华,农耀京..四种金花茶组植物叶片金属元素含量及富集特性研究[J].广西植物,2016,36(12):1416-1421,1444,7.基金项目
广西自然科学基金(2015GXSFBA139046) （2015GXSFBA139046）
广西公益性科研院所基本科研业务费专项(桂热研201604,桂热研201511) [Supported by Natural Science Foundation of Guangxi (2015GXSFBA139046) （桂热研201604,桂热研201511）
Fundamental Research Fund for the Public Welfare Scientific Research Institute of Guangxi(201604,201511)]. （201604,201511）
